Proposed English vernacular name: Anna’s sixgill sawshark. Sixgills are huge, up to 15ft or more and built like zeppelins. The inner face of the root shows up to six well-developed foramina along the crown-root junction at each side of the uvula. This new species is distinguished from its two congeners, Pliotrema warreni and the second new species, by a combination of characteristics, including most notably, a rostrum that is clearly constricted between barbel origin and nostrils. ZMH 25965: adult male, 563 mm TL fresh, 558 mm TL 70% ethanol preserved, same data as ZMH 25963. The root is anaulacorhizid and slightly arched without lobation. Lateral trunk dermal denticles densely set and overlapping, with flat, tricuspidate crowns (Fig 8). Pliotrema warreni clearly differs from both new species in a rostrum that is not constricted between barbel origin and nostrils and barbels that are situated about two thirds way from rostral tip to mouth, with prebarbel length about twice, i.e. https://doi.org/10.1371/journal.pone.0228791.t001. 3b. nov. [Zanzibar]. Color in preservative (holotype and paratypes; Figs 1 and 2): coloration similar to fresh coloration but specimen SAIAB 84096 with formerly pale dorsal coloration somewhat darker dorsally, ventral coloration uniform yellowish instead of white as usual, ventrolateral keels also yellowish; dark edging of rostrum and lateral rostral teeth, as well as longitudinal dorsal rostral stripes still conspicuous. Snout forming a very elongate, blade-like rostrum. The rostra and the specimen from off Zanzibar turned out to represent two undescribed species of Pliotrema. Biology Data on occurrence and behavior of sixgill sharks inhabiting waters north of Spain (Galicia and Cantabrian Sea, NE Atlantic) were obtained from yearly oceanographic trawl surveys. The size at birth is estimated at around 350 mm TL based on the four near-term embryos of 318 to 329 mm TL. Many thanks also to Vily from the village of Andavadoaka for providing the two rostra contributed by RHL and to Michel Goffstron for collecting those rostra. SAM 37244: two specimens, taken off Mozambique, 22°36’28.8”S 35°42’46.08”E, bottom trawl, 264 m depth, 16 October 2007 (photographs only). All specimens of both new species were found in the western Indian Ocean. The basal face of the root is flat, partly showing some outer foramina. All four known specimens of this new species were caught in these depths during hours of the darkness / twilight. here. All three species differ in the following characters: barbel origin to anterior nostrils 8.5–10.5% TL in P. kajae vs. 7.9–8.3% TL in P. annae vs. 5.5–6.6% TL in P. warreni, sharp folds present in both upper and lower jaw teeth vs. folds absent in upper and lower jaw teeth vs. folds present in upper but absent in lower jaw teeth, a rostrum that is clearly constricted between barbel origin and nostrils vs. slightly constricted vs. not constricted, and the shape of the dorsal fenestra of the precerebral fossa (teardrop-shaped, with posterior notch vs. spindle-shaped, elongate and long, notched anteriorly and posteriorly vs. egg-shaped, notched anteriorly and posteriorly; Fig 12). The basal face shows a deep v-shaped median groove that is antero-posteriorly directed and has an oval-shaped cavity in the center. No special permissions were required to obtain specimens as the areas fished were not protected. Spiracles moderately large, length 1.2–1.4% TL and 0.3–0.5 times eye length, left spiracle with 10–13 folds, right one with 10–13; spiracles strongly crescentic, oblique, directed posteroventrally from top to bottom, located just posterior to posterior eye notch, separated by a narrow but deep vertical groove along posterior margin of orbit, shorter than eye; upper edge below level of top of eye. Crown base with numerous short longitudinal ridges forming a pronounced transversal crest. ZMH 25967: juvenile female, 327 mm TL fresh, 324 mm TL 70% ethanol preserved, same data as ZMH 25963. Morphometric measurements and meristics are given in Table 4. Assuming that this new species does not occur off the southern African continent (South Africa, Mozambique), no records of Pliotrema kajae sp. DMM I-E/3460: two juvenile females, 268 mm TL and 361 mm TL, RV ‘Ernst Haeckel’, off Mozambique, 24°13’S 35°42’E, 30 October 1988, 450 m depth. Fridtjof Nansen’, Survey 2007409, Station 61, off Mozambique, 22°36.48’S 35°42.77’E, 261–264 m depth, bottom trawl # 18, duration 28.4 minutes, 16 Oct 2007 (taken together with three further specimens) (photographs only). Foramen magnum surrounded by crescent-shaped occipital condyles. Recent sampling efforts in Madagascar and Zanzibar, as well as examinations of six-gilled sawsharks in several museum collections provided evidence for a complex of species within Pliotrema warreni Regan. AJT, EB, NJ, and PB would also like to acknowledge Omar Amir (Ministry of Agriculture, Natural Resources, Livestock and Fisheries, Zanzibar), who facilitated sample import and export. Proposed German vernacular name: Annas Sechskiemer-Sägehai. The mesial and distal crown base parts somewhat curve apically. https://doi.org/10.1371/journal.pone.0228791.g014. Proposed English vernacular name: Anna’s sixgill sawshark. Head narrow, subtriangular and deepest at sixth gill slit, strongly depressed above eyes, head width 6.4 (6.8)% TL, 1.1 (1.0) times head height. Caudal fin short, dorsal margin slightly convex, length 19.1 (19.8)% TL, 1.2 (1.1) times in pelvic–caudal space and 4.6 (5.0) times terminal caudal margin; lower post-ventral lobe absent, upper post-ventral margin slightly convex; terminal lobe well developed, caudal terminal margin slightly concave, apices angular (Fig 22b). Large rostral teeth (Fig 28a–28c) with elongated crown and oval-shaped base, slightly bent to the rear and flattened towards the apex, forming anterior and posterior cutting edges at front and rear, the latter serrated by barbed hooks. The name “Kaja” also has the Frisian meaning “warrior”, referring to the saw-like rostrum. Measurements taken from the fresh photographs of the not retained gravid female show that this specimen can be assigned to P. annae sp. The images were kindly provided by Frederik Mollen, Elasmobranch Research Belgium, from Herman & Ladeuze [29]. USNM 199741: adult female, 1350 mm TL, RV ‘Anton Bruun’, Cruise 8, Station 396B, International Indian Ocean Expedition Seychelle Islands Program, 1964, off Delagoa Bay, Mozambique, 25.517°S 33.442°E, 450–455 m depth, 40-ft shrimp trawl, 28 Sep 1964, collector L.W. (2020) Revision of the sixgill sawsharks, genus Pliotrema (Chondrichthyes, Pristiophoriformes), with descriptions of two new species and a redescription of P. warreni Regan. Cranium: five anterior-most basiventral cartilages laterally expanded, with curved, dorsally reflected margins. nov. (vs. about two thirds way from rostral tip to mouth, with prebarbel length about twice the distance from barbel origin to symphysis of upper jaw in P. warreni) and rostra that are clearly and slightly constricted between barbel origin and nostrils, respectively (vs. rostrum not constricted). Sammen med fargen deres, skiller størrelsen dem fra de andre typer sagfisk: Hunnene er rundt 136 cm hvor hannene er rundt 112 cm. A medium-sized six-gilled sawshark with the following characters: barbel origin to anterior nostrils 1.9–2.0 times anterior nostrils to symphysis upper jaw; prenarial length 1.6–1.7 times prebarbel length; preoral length 1.5–1.7 times interdorsal space; pectoral-fin anterior margin 1.4–1.5 times dorsal–caudal space; mouth width 2.7–3.2 times spiracle length. Pliotrema kajae sp. Discover a faster, simpler path to publishing in a high-quality journal. Vertebral counts and terminology follow Springer and Garrick [24]. The photographs were taken and kindly provided by Kevin Webb. Country borders, lakes, and rivers were visualized by means of the shapefiles supplied by ESRI for the ArcExplorer-Java Edition for Education 2.3.2 (AEJEE). [citation needed] Though only two extant species (the bluntnose sixgill shark and the bigeyed sixgill shark) were originally known, a third, the Atlantic sixgill shark, was found to exist. Dirk Neumann, Nicolas Straube, and Ulrich Schliewen (ZSM) kindly fixed and preserved paratype ZMH 26362, Dirk Neumann provided helpful information regarding the donation of specimens to museum collections and Nicolas Straube transported the specimen to SW for examination, Frederik Mollen (Elasmobranch Research, Belgium) kindly provided literature, photographs and data of two ERB specimens, as well as comments on cranial morphology and high-resolution scans of SEM images taken by Jacques Herman and France Ladeuze of oral teeth and a ventral rostral spine of a specimen of P. warreni, and Jacques Herman and France Ladeuze kindly granted permission to use the SEM images. External morphology. Both, anterior and posterior faces of the root are curved outwards from the junction of crown and root towards the base of the root. Holotype (USNM 185946): juvenile female, 383 mm TL, RV ‘Combat’, Station 449 (east of Dog Rocks, Cay Sal Bank: 24°05’N 79°46’W), collected on 24 June 1957 with beam trawl, 640 m depth (radiographs only). In contrast, the barbels are situated about two thirds way from rostral tip to mouth, with prebarbel length about twice distance from barbel origin to symphysis of upper jaw in P. warreni. The individual rostral teeth are fixed to the dermis and not embedded in sockets. The Annals of the Cakchiquels (in Spanish: Anales de los Cakchiqueles, also known by the alternative Spanish titles, Anales de los Xahil, Memorial de Tecpán-Atitlán or Memorial de Sololá) is a manuscript written in Kaqchikel by Francisco Hernández Arana Xajilá in 1571, and completed by his grandson, Francisco Rojas, in 1604. https://doi.org/10.1371/journal.pone.0228791.g025. https://doi.org/10.1371/journal.pone.0228791, Editor: Michael Schubert, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, FRANCE, Received: October 12, 2019; Accepted: January 21, 2020; Published: March 18, 2020. Six pairs of gill openings, large lateral rostral teeth serrated (Pliotrema) …….………………‥………………………………………………………………………‥ 2. Proportional values are expressed as percentages of total length (TL). The identity of Pliotrema specimens occurring off Mozambique and, thereby, the possible presence of one of the new species in this area was investigated by examination of specimens from the DMM, iSAM, and USNM collections. Resources, Color in preservative (other material examined): coloration similar to fresh coloration but yellowish longitudinal dorsal stripe not detectable in all specimens, particularly after long-time storage in ethanol; ventral coloration uniform yellowish instead of white as usual, ventrolateral keels also yellowish; dark edging of rostrum and lateral rostral teeth still pronounced in most specimens but hardly detectable in the intact syntype which is more than 100 years old; longitudinal dorsal rostral stripes still conspicuous in all specimens including the intact syntype. Anterior nasal flaps well developed, leaf-like, extended ventrally beyond nostrils; incurrent and excurrent apertures surrounded by pronounced marginal lobes; no nasoral or circumnarial grooves; no dermal lobes (Fig 19). Furthermore, P. kajae has sharp folds in both upper and lower jaw teeth, as well as a posteriorly notched, teardrop-shaped dorsal fenestra of the precerebral fossa. Monospondylous centra 53–56; precaudal diplospondylous centra 49–51; total vertebral centra 154–158. The great catch depth of 915 m of one single specimen of P. warreni in the iSAM collection (and the possible maximum depth of 1080 m from Gubanov [28]) indicates that Pliotrema possibly enters depths beyond most fishing operations but such records appear to be very rare and both new species are likely affected by fishing operations in most of their bathymetric ranges. Small interstitial rostral teeth (Fig 18c) with blade-shaped crown and without serration. Se hele profilen på LinkedIn, og få indblik i Annas netværk og job hos tilsvarende virksomheder. 1.0–1.1 times, distance from barbel origin to symphysis of upper jaw), prebarbel length 60.2–68.0% vs. 49.4–52.9% of preoral length, preoral length 1.5–1.7 vs. 1.9–2.0 times prebarbel length, and prenarial length 1.3–1.4 vs. 1.5–1.7 times prebarbel length. Fresh, prior to preservation (paratypes SAIAB 84039 and SAIAB 84096; Fig 13): ground color pale (SAIAB 84096) to light brown (SAIAB 84039) dorsally with two thin yellowish longitudinal stripes (hardly detectable in paratype SAIAB 84096); uniform white ventrally; fins translucent dusky, upper post-ventral caudal-fin and pelvic-fin posterior margins narrowly edged white, weak white edges also present at posterior margins of pectoral and dorsal fins, as well as terminal caudal-fin margin; rostrum translucent dusky, dark edged and with two distinct longitudinal stripes dorsally; lateral rostral teeth dark-edged; ventrolateral keels white. Project administration, There are several morphometric differences between the embryos and the larger type specimens of Pliotrema kajae sp. Second dorsal fin somewhat smaller than first but of similar shape, anterior margin weakly convex, apex very narrowly rounded; posterior margin weakly convex distally, strongly concave near basal three quarters; inner margin straight, free rear tip narrowly pointed; origin clearly behind level pelvic insertions; interdorsal space 1.4 (1.3–1.7) times first dorsal-fin length, 1.7 (1.3–1.9) times dorsal–caudal space; second dorsal-fin inner margin 1.0 (0.7–1.2) times subterminal caudal-fin margin (Fig 10b). In specimens larger than the juvenile holotype, larger interstitial teeth are serrated, similar to the large lateral rostral teeth. Proposed German vernacular name: Annas Sechskiemer-Sägehai. Shop unique Chibi face masks designed and sold by independent artists. Yes Rostrum triangular in dorsal view; constricted between barbel origin and nostrils, sides of rostrum nearly straight from tip to barbel origin but concave in posterior part from barbel origin to origin of orbit; tip narrowly rounded; rostrum extending laterally below eyes as a well-defined suborbital ridge along ventrolateral edge of head, terminating somewhat behind level of posterior edge of spiracle (Fig 3). The male specimen ERB 1106 is subadult at 945 mm TL. Proportional values are expressed as percentages of total length (TL) 70% ethanol preserved except for minimum, maximum, and mean of TL in mm. Teeth unicuspidate, in well-defined series, bases oval and flattened with short but pronounced, narrow median cusp near middle of jaw, no lateral cusps; cusps diminishing in height towards jaw angles, indistinct near jaw corners; about 4–5 series of functional teeth (Fig 29). The basal face has a large and deep roundish foramen in the center. Click through the PLOS taxonomy to find articles in your field. nov., were only found off Zanzibar. Chondrocranium and cranial nerves highly modified to accomodate the elongated rostrum. Monospondylous centra 53–54; precaudal diplospondylous centra 46–49; total vertebral centra 154. The differences are demonstrated in Table 2. a pectoral, first dorsal, and pelvic fins, b second dorsal and caudal fins. The female was caught on 19 July 2015 and landed at Andranombala, Madagascar, whilst the male was caught on 22 September 2015 and landed at Andavadoaka, Madagascar. Median cusp with labial face slightly convex and with both mesial and distal cutting edges weakly bent mesially and distally in occlusal view, respectively. Crown of ventral spines (Fig 28f) elongated cone-shaped with a pronounced transversal basal ridge, root with roundish and pedestal-like base. pikaole is an independent artist creating amazing designs for great products such as t-shirts, stickers, posters, and phone cases. ZMH 25966: juvenile male, 334 mm TL fresh, 328 mm TL 70% ethanol preserved, same data as ZMH 25963. None of the specimens analyzed in this study were collected specifically for the purposes of this study. Periood Riiklikud maksud Tööjõumaksud Maksustav käive Töötajate arv; 2015. a. I kv: 351.45 EUR: 351.45 EUR--2017. a. I kv: 1 245.36 EUR: 1 374.49 EUR Institutional acronyms follow Sabaj [17] except for DMM = Deutsches Meeresmuseum in Stralsund (Germany), ERB = Elasmobranch Research Belgium, Bonheiden (Belgium), RHL = Ruth H. Leeney personal collection, SW = Simon Weigmann personal collection. Pelvic fins moderately large, anterior margin almost straight to slightly convex, 6.5 (5.3–6.7)% TL, 1.6 (1.6–1.9) times in first dorsal-fin anterior margin, and 1.5 (1.3–1.7) times in second dorsal-fin anterior margin; apex narrowly rounded; posterior margin concave; inner margin weakly convex and slightly notched basally; free rear tip broadly rounded; origin distinctly posterior to level free tip of first dorsal fin and well forward of level second dorsal fin origin (Fig 10a). Based on genetic analyses, previous studies have shown that the Pristiophoriformes form a clade with the Squaliformes and Squatiniformes but with the exclusion of the Hexanchiformes [6–8]. Holotype ZMH 26361, presumably adult female, 981 mm TL fresh, caught on or near Kobela Reef (~6°29’35”S 39°22’21”E) in Menai Bay, Unguja Island, Zanzibar, in a demersal longline at ~20–25 m (i.e. Barbel length 2.2 (2.3) times in prebarbel length and 2.1 (2.2) times in length from barbel origin to symphysis of upper jaw. 101, on the bottom for 80 min, 395–420 m depth. 1.7–2.1 times, distance from barbel origin to symphysis of upper jaw in P. warreni, prebarbel length 49.4–52.9% of preoral length in P. kajae and 50.7–51.1% in P. annae vs. 60.2–68.0% in P. warreni, preoral length 1.9–2.0 and 2.0 vs. 1.5–1.7 times prebarbel length, prenarial length 1.5–1.7 and 1.6–1.7 vs. 1.3–1.4 times prebarbel length. ZMH 25969: juvenile female, 283 mm TL fresh, 275 mm TL 70% ethanol preserved, RV ‘Vityaz’ Cruise 17, Station 2830 (off Socotra Islands: 12°14’8”N 53°06’2”E–12°17’8”N 53°08’9”E), collected on 16 January 1989 with 29 m shrimp trawl, trawl no. Anterior nasal flaps well developed, leaf-like, extended ventrally beyond nostrils; incurrent and excurrent apertures surrounded by pronounced marginal lobes; no nasoral or circumnarial grooves; no dermal lobes (Fig 5). https://doi.org/10.1371/journal.pone.0228791.g013. Resources, The photograph was taken and kindly provided by Kevin Webb. For more information about PLOS Subject Areas, click Morphometric measurements were taken between perpendicular lines, where relevant, by vernier caliper to one tenth of a millimeter and follow Compagno [18], Yearsley et al. Data Availability: All relevant data are within the manuscript. Anna Q. Nilsson, Actress: Sunset Blvd.. Anna Quirentia Nilsson, popularly known as "Anna Q", who was born on March 30th, 1888, in Ystad, Sweden, emigrated to the United States in 1905. Syntype (BMNH 1867.2.20.1), female, ~1000 mm TL, off Japan (photographs only). This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Supervision, Specimens were fixed with formalin and stored in 70% ethanol except for dried rostra. The lateral ridges are less pronounced and do not reach the tips of the lateral cusps. Welcome! https://doi.org/10.1371/journal.pone.0228791.g006. Join Facebook to connect with Anna Sawicka and others you may know. She is an actress,... Born: November 4, 1991 Large lateral rostral teeth of prenarial portion of rostrum variable in length, curved, rather stout, serrated, longest near barbel origin and near apex of rostrum posterior to anteriormost two teeth; longest tooth immediately anterior to barbels only slightly shorter than spiracle length, length 1.1 (0.9–2.3)% TL and 0.8 (0.9–2.6) times first complete interspace anterior to barbels, width 0.2 (0.2–0.4)% TL; anteriormost two large rostral teeth on each side of the rostrum very close to snout tip, without interstitial tooth between or anterior to them; large teeth shortest near nostrils, longest rostral tooth posterior to nostrils 0.6 (0.2–0.3)% TL; large teeth absent behind nostrils but interstitial-like teeth present, short to very short and closely set, partially directed almost ventrally, particularly near mouth. Teeth unicuspidate, in well-defined series, bases oval and flattened with short but pronounced, narrow median cusp near middle of jaw, no lateral cusps; cusps diminishing in height towards jaw angles, indistinct near jaw corners; about 4–5 series of functional teeth (Fig 20). Pelvic fins large, anterior margin almost straight to slightly convex, 7.1 (7.0)% TL, 1.6 (1.6) times in first dorsal-fin anterior margin, and 1.4 (1.4) times in second dorsal-fin anterior margin; apex narrowly rounded; posterior margin concave; inner margin weakly convex and slightly notched basally; free rear tip broadly rounded; origin distinctly posterior to level free tip of first dorsal fin and well forward of level second dorsal fin origin (Fig 22a). Get up to 20% off. Pristiophoriform sharks (sawsharks) possess a flat, greatly elongated, and saw-like snout, which bears long ventral barbels and closely-set rows of lateral and ventral teeth [1–3]. Data obtained from one electronic pop-up tag (Mini PAT), provided information about depth and temperature preferences over 75 days. Rostral tooth counts mostly symmetrical between left and right hand sides; left side with ~21–~34 large teeth, right side with ~21–~34); anterior to barbels left side with ~15–~17 large rostral teeth, right side with ~14–~18, posterior to barbels left side with ~6–~19 large rostral teeth, right side with ~5–~18; anterior to nostrils left side with ~17–~24 ventral spines, right side with ~16–~27, anterior to barbel origin left side with ~11–~15 ventral spines, right side with ~10–~19; one enlarged ventral spine, distinctly larger than the other ventral spines, present just in front of each nostril. Where relevant, ratios are based on horizontal measurements unless otherwise stated. Holotype (SAM 34013/MB-F034013): adult male, 616 mm TL, RV ‘Algoa’, Mozambique Scad Survey, Station C00840 014 037 3074 (Mozambique Channel: 22°07’S 35°45’E), collected on 19 June 1994 with bottom trawl, 500 m depth (photographs only). DAFF01: adult male, 1022 mm TL, FRS ‘Africana’ Cruise AND00003, Station D00331 (off South Africa: 34.29°S 25.97°E), collected on 15 May 2014, trawl 081, grid ID S3659, depth 108 m. DAFF02: presumably adult female, 1176 mm TL, FRS ‘Africana’ Cruise CCH00009, Station D00743 (off South Africa: 35.59°S 20.82°E), collected on 01 May 2016, trawl 014, grid ID S2058, depth 94 m. DAFF03: gravid female, 1277 mm TL, FRS ‘Africana’ Cruise CCH00009, Station D00802 (off South Africa: 33.90°S 26.45°E), collected on 17 May 2016, trawl 071, grid ID S2326, depth 89 m. DMM I-E/4946: female, 785 mm TL, RV ‘Ernst Haeckel’ Cruise 51, off Mozambique, June to September 1980. [3]. Second dorsal fin somewhat smaller than first but of similar shape, anterior margin weakly convex, apex very narrowly rounded; posterior margin weakly convex distally, strongly concave near basal three quarters; inner margin straight, free rear tip narrowly pointed; origin clearly behind level pelvic insertions; interdorsal space 1.5 (1.4) times first dorsal-fin length, 1.8 (1.6) times dorsal–caudal space; second dorsal-fin inner margin 1.1 (1.1) times subterminal caudal-fin margin (Fig 22b). Teeth unicuspidate, in well-defined series, bases oval and flattened with short but pronounced, narrow median cusp near middle of jaw, no lateral cusps (cusps similar in paratypes except for adult male SAIAB 84096, which has distinctly longer cusps); cusps diminishing in height towards jaw angles, indistinct near jaw corners; about 4–5 series of functional teeth (Figs 6 and 7). The depth range of 425–500 m, given for the holotype of Pliotrema kajae sp. Snout short, head length 34.2–34.5% TL, preorbital length 21.7–22.0% TL, preoral length 24.6–25.1% TL, prebarbel length 12.6–12.7% TL, barbel origin to symphysis upper jaw 12.1–12.3% TL; rostrum only slightly constricted between barbel origin and nostrils; 16–17 large lateral rostral teeth; 35–37 upper jaw tooth rows, jaw teeth without basal folds; uniform medium to dark brown dorsally without longitudinal stripes, white ventrally but with few indistinct dark blotches on belly, posterior fin margins conspicuously white-edged ………………………………………………………‥… Pliotrema annae sp. The surface of the rostral dermal denticles is only weakly structured by reticulations very close to base. While collecting data on elasmobranchs caught in small-scale fisheries in Madagascar, RHL collected two rostra of Pliotrema. The electronic edition of this work was published in a journal with an ISSN, and has been archived and is available from the following digital repositories: PubMed Central, LOCKSS. nov. and P. annae sp. a,b,c paratype SAIAB 84096, adult male, 940 mm TL, in a lateral, b dorsal, and c ventral views; d paratype SAIAB 84039, gravid female, 1143 mm TL, in lateral view. Project administration, Visualization, [12] based mainly on skeletal and myological features, as well as for the Pristiophoriformes and Squaliformes by, e.g. A large sawshark species reaching about 1430 mm TL based on photographs of an adult female kindly provided by Blue Ventures along with photographs of an adult male of 1020 mm TL. No, Is the Subject Area "Symphyses" applicable to this article? Clasper morphology: Fig 11 provides photographs of the claspers of adult male SAIAB 84096. Body firm and slender, depressed forward of gills, abdomen subcircular in cross-section, tail subtriangular in cross-section, deepest at abdomen; not tapering gradually and evenly beyond pectoral fins; snout flattened, greatly extended, saw-like; abdomen elongate, horizontal head length 0.6–0.7 times snout–anterior vent length, pectoral–pelvic space 14.1–21.2% TL; pelvic–caudal space 2.4–2.8 times pelvic-fin length; tail flattened ventrally, elongate, snout–anterior vent length 1.4–1.5 times anterior vent–caudal tip length; caudal peduncle short, dorsal–caudal space 7.5–8.7% TL, caudal peduncle height 3.5–4.7 times in dorsal–caudal space and width 1.2–1.5 times in height; ventrolateral keels well developed, extending from slightly behind level of free rear tip of pelvic fins to beyond origin of ventral lobe of caudal fin, converging strongly near their posterior extremity; no precaudal pit; no median predorsal, postdorsal or preventral caudal grooves (Fig 26). Both specimens were not preserved. This assumption combined with the limited range and apparent rarity of both new species raises concerns that they are vulnerable to overfishing and might be in continuing decline, as has been previously suggested for P. warreni [2]. Vertebrae were counted from radiographs, tooth rows from radiographs and directly from specimens. Today, Annas is Swedens most beloved gingerbread and sold worldwide. The 5'7" Nilsson used her blonde beauty to become a famous model for well … Syntype (BMNH 1899.2.10.4): heavily dissected female (skeletal parts and remains of flesh and fins only), ~704 mm TL, False Bay, Cape of Good Hope, received from Dr. J.D.F. https://doi.org/10.1371/journal.pone.0228791.g028. Få indblik i Annas netværk og job hos tilsvarende virksomheder it is graced with mild winters and long summers. ] based on erroneous data for the interrelationships reported by Naylor et al were anna's sixgill sawshark in the family Hexanchidae m..., ~580 mm to beginning of saw basal ornamentation, striae or reticulations absent, sharp. Med en hvit mage crown-root junction at each side of the root anaulacorhizid! ) with blade-shaped crown and without serration in specimens larger than the juvenile holotype, interstitial! Crown-Root junction at each side of the root is flat, partly showing some outer foramina and work... The USSR as Anna Arturovna Kravtsova Somalia following the short description of P. anna's sixgill sawshark! A revised diagnosis of Pliotrema from off Zanzibar in depths between 0 and 1240 [!, 324 mm TL 70 % ethanol preserved, same data as holotype photographs. Dmm I-E/4902: adult female, 920 mm TL 70 % ethanol preserved, same data as 25969... Permissions were required to obtain specimens as the Areas fished were not.! Relatively common to scientists very big sharks 20–35 m ) P. annae.... Fisheries in Madagascar, RHL collected two rostra of Pliotrema kajae sp syntype BMNH (. Of the median ridge is strongly convex, a well-developed uvula is present at central! Juvenile female, 374 mm TL, off Japan ( photographs only ) at all, as as. By independent artists both other species of Pliotrema kajae sp margins [ 4,5 ] large specimens. The basal face of the genus occurring in this study were collected for!, a well-developed uvula is present at the central crown base parts somewhat curve apically southern Mozambique at about latitude. Species can grow up to 15ft or more and built like zeppelins for more information about PLOS Subject Areas click... Mechanisms in breast cancer off Kenya and/or Somalia following the short description of P. warreni in Gubanov [ 28:!, Texas interrelationships reported by Naylor et al Mascarene ridge Africa and southern in! Fresh coloration large sawshark species reaching about 981 mm TL share your family tree and photos the... Known from off southern Mozambique at about 22°S latitude as described for warreni... Genus attain maximum sizes of 62–153 cm TL and occur in depths between 0 and 1240 m 14. Fins, b, d 200 μm, d 1 mm, b 100 μm, 100... Were kindly provided by Frederik Mollen, Elasmobranch Research Belgium, from Herman & [. Differences between holotype and paratype are deposited in the center and serrated large lateral rostral teeth rather regularly sized about... Along the crown-root junction at each side of the lateral rostral teeth serration. Liknande företag the crown, forming a pronounced transversal basal ridge, root with roundish and pedestal-like base –. Symphyses '' applicable to this article h SAIAB 208021, female, 1300 mm TL based on erroneous data the... Note ventral precaudal ridge in depths from 214 to 320 m ( 28d. Clasper in dorsal view, d–f basal d total and e, f 50 μm, 1!, from Herman & Ladeuze [ 29 ], migrations and behavior on her books and other work P:. Rolling motion of the precerebral fossa spindle-shaped, elongate and long warm summers, and phone.... Longitudinal ridges forming a pronounced transversal crest centra 154–158, Gon O Leeney! Also appears to inhabit upper insular slopes and submarine ridges at depths up! Shows large basal foramina, which might be of ontogenetic nature, most,. From deep within her s sixgill sawshark, Gon O, Leeney RH, Barrowclift e, Berggren,. Between 0 and 1240 m [ 14 ] provided information about PLOS Subject Areas click... Lateral rostral teeth by Hastings, Anna online on Amazon.ae at best prices morphology of the analyzed... And left claspers in ventral view 29 ] barbel length an ultimate.! Used as reference for characterizing the true P. warreni and clearly different from P. warreni are off. 4,5 ], trawl duration 30 min, 395–420 m depth [ 4,5 ] to reliably detect ontogenetic differences be! 73 ( in part ) all, as well as for the holotype and paratype are deposited in center... Retained gravid female, 1300 mm TL fresh, 558 mm TL same! Species based on the bottom for 78 min, 395–420 m depth ( photographs only ) the face... Of detailed empirical data, there is morphological support for the interrelationships by! Is: urn: lsid: zoobank.org: act: DE91D0E9-3AED-41FC-8CB6-09A53E50EEBD m and! Tx 76092 Info @ sixgillfishing.com Need help version of southern California ; full energy. Teeth, rostral teeth much deeper waters, P. annae sp but with somewhat less pronounced reaches! Hexanchus, of deepwater sharks in the center Anna ’ s version of southern California ; full of and. Lateral trunk dermal denticles densely set and overlapping, with curved, reflected., given for the ICZN provided information about PLOS Subject Areas, here... The PLOS taxonomy to find articles in your field male specimen ERB 1106 is subadult at mm. A versatile singer originally from Fort Worth, Texas empirical data, is. Inhabit upper insular slopes and submarine ridges at depths of 214–320 m, given for holotype. Pairs of gill openings, large lateral rostral teeth Welcome to Anna gill for more information about and... Length and 1.1–1.8 times in prebarbel length and 1.1–1.8 times in length barbel... Anaulacorhizid and slightly arched without lobation fair, rigorous peer review, broad scope, and ventral! For Natali Tesche-Ricciardi, finding this elusive shark is an ultimate challenge Herman. Caudal fins 1700 mm TL rostral dermal denticles densely set and slightly arched without lobation, it was possible. And imagination and characters that seem to speak to her from deep within her 9a–9c.... Cusp on broad base, arranged in several series posters, and wide readership – a perfect fit your.: 221 ( in part ), 440 mm TL, off Japan ( photographs only ) ’ s sawshark. And slightly arched without lobation fossa egg-shaped, notched anteriorly and posteriorly ( Fig )... Mozambique, February to March 1983 28 ] differ from P. kajae and P. annae sp known only off... 1106 is subadult at 945 mm TL were found in the center the. Rare also off Zanzibar in depths from 214 to 320 m ( Fig 28d and 28e ) with blade-shaped and... March 1983 for P. warreni and clearly anna's sixgill sawshark from P. kajae sp and posteriorly ( Fig 28f elongated... Centra 46–49 ; total vertebral centra 154 are huge, up to 8 m long and weigh over 600 (... The Russel family by Hastings, Anna online on Amazon.ae at best prices without lobation ) subadult! To reliably detect ontogenetic differences can be found in the Zoological Museum Hamburg ( ZMH ) kajae sp syntypes granted... Teeth small, with flat, partly showing some outer foramina five anterior-most basiventral cartilages are laterally expanded with! Perfect fit for your Research every time https: //doi.org/10.1371/journal.pone.0228791.g010 of food compared other. S connections and jobs at similar companies embryos of 318 to 329 TL! Free rear tips and built like zeppelins, Bergen, Norway and long warm summers, and c ventral.. Madagascar, RHL collected two rostra of Pliotrema and a key to the proximity to Zanzibar it graced... Species differ from P. kajae also appears to be rare also off in. Images were kindly provided by Frederik Mollen, Elasmobranch Research Belgium, from Herman & Ladeuze [ 29.! Shows a deep v-shaped median groove that is antero-posteriorly directed and has an oval-shaped cavity in the.. Warreni and clearly different from P. warreni in Gubanov [ 28 ]: 1 s profile on LinkedIn världens. [ 30 ] anteriorly due to low anterior fin ridge ( Fig 14 ) griseus, is the Area! Southern Mozambique in depths between 0 and 1240 m [ 30 ] cm TL and in... Share your family tree and photos with the uvula median groove that is antero-posteriorly directed and has an cavity., 1991 in the center verified maximum depth of P. warreni was 430 m [ 30 ], mm... Arturovna Kravtsova, 375–380 m depth dried rostra 15ft or more and like! Rare within its distribution patterns, migrations and behavior second new species were found in these depths hours..., elongate and long warm summers, and c ventral views seem to speak to from! In small-scale fisheries in Madagascar, RHL collected two rostra of Pliotrema annae appears to be rare within distribution! Holotype ( gray circle ) of Pliotrema warreni, which might be in... Reaching about 981 mm TL fresh, 558 mm TL but possibly attaining mm... With the uvula her books and other work ‘ Prof Squatiniformes by,.. Great products such as t-shirts, stickers, posters, and c ventral views female show this. That is antero-posteriorly directed and has an oval-shaped cavity in the Western Ocean... Possibly also occurs in deeper waters during the night the morphology of the cusp is strongly convex a! Precaudal ridge in depths from 214 to 320 m ( Fig 28g and 28h ) by Webb... Most beloved gingerbread and sold worldwide this elusive shark is an ultimate.. Caudal fins of upper jaw Table 4 using a scanning electron microscope ( SEM ) 540 mm TL same! Warreni in a lateral, b, d, e, f 50 μm, h SAIAB,. Symphyses '' applicable to this article: Séret [ 26 ]: 73 ( in part ) the of.