anna's sixgill sawshark

https://doi.org/10.1371/journal.pone.0228791.g031, 1a. 1.7–2.1 times, distance from barbel origin to symphysis of upper jaw (vs. barbels situated about half way from rostral tip to mouth, with prebarbel length about equal, i.e. Natural History Museum, London, United Kingdom, Roles 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. Regardless of the lack of detailed empirical data, there is morphological support for the interrelationships reported by Naylor et al. 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 1.4–1.6 times first dorsal-fin length, 1.6–1.9 times dorsal–caudal space; second dorsal-fin inner margin 0.8–1.1 times subterminal caudal-fin margin (Fig 26). Males are adolescent at 700 to 740 mm, mature at 830 mm and grow to at least 1120 mm TL, females are adolescent at around 950 to 1100 mm TL, are mature when over 1100 mm TL and attain at least 1360 mm TL [30]. Large lateral rostral teeth of prenarial portion of rostrum variable in length, curved, rather stout, serrated, longest about half way from apex of rostrum to barbel origin; longest tooth immediately anterior to barbels shorter than spiracle length, length 0.5–1.3% TL and 0.5–1.7 times first complete interspace anterior to barbels, width 0.1–0.3% TL; anteriormost tooth close to tip of rostrum small, followed by the first large tooth; large teeth shortest near nostrils, longest rostral tooth posterior to nostrils 0.2–0.8% 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. The identification of the heavily dissected syntype is further evidenced by its catch location (False Bay, Cape of Good Hope), where both new species apparently do not occur. The heavily dissected P. warreni syntype BMNH 1899.2.10.4 (Fig 31) could be identified as the same species despite its condition (only skeletal parts and remains of flesh and fins still exist), based on the measurements of horizontal prebarbel length (138 mm) and an estimation for the distance barbel origin to the symphysis of the (missing) upper jaw (~74 mm), resulting in a ratio of 1.9. Further ontogenetic differences can be found in the morphology of the lateral interstitial rostral teeth. The three species of Pliotrema are apparently allopatric with the distribution of P. kajae being restricted to Madagascar and the Mascarene Ridge, P. annae known only from off Zanzibar, and P. warreni occurring off South Africa and southern Mozambique. Where relevant, ratios are based on horizontal measurements unless otherwise stated. Snout long, head length 38.3–40.4% TL, preorbital length 25.7–27.3% TL, preoral length 28.6–31.3% TL, prebarbel length 14.8–16.2% TL, barbel origin to symphysis upper jaw 13.7–15.0% TL; rostrum clearly constricted between barbel origin and nostrils; 21–31 large lateral rostral teeth; 38–43 upper jaw tooth rows, jaw teeth with sharp basal folds; pale to light brown dorsally with two yellowish stripes, uniform white ventrally, posterior fin margins with narrow white edges ………… Pliotrema kajae sp. This value is in line with P. warreni and clearly different from P. kajae and P. annae. SAIAB 208021: female, 925 mm TL, Great fish River mouth, 33°29’43"S 27°08’06"E, Eastern Cape, South Africa, found stranded on the beach, Warren Potts, 09 June 2019. Genealogy profile for Anna Six. nov. (as Pliotrema warreni) before Séret [26] have been found. Fast and free shipping free returns cash on delivery available on eligible purchase. The root is anaulacorhizid and slightly arched without lobation. ZMH 8504: juvenile male, 474 mm TL, RV ‘Southern Surveyor’, Station SS 5/94/30 (Bass Strait: 39°00.1’S 146°35.8’E), collected on 24 August 1994 with bottom trawl, 43–44 m depth. The photograph was taken and kindly provided by Kevin Webb. nov. differs from P. annae sp. 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.t004. Elasmo-Lab, Elasmobranch Research Laboratory, Hamburg, Germany, Proposed English vernacular name: Anna’s sixgill sawshark. 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. Chondrocranium and cranial nerves highly modified to accomodate the elongated rostrum. Gill slits small, upright, weakly pleated, lateral on head, close to ventral surface, extending slightly onto ventral surface, subequal in length, sixth slit arches around pectoral-fin origin. Fresh, prior to preservation (types and unretained specimens, Figs 23, 24 and 25): color uniform medium to dark brown dorsally without longitudinal stripes, white ventrally but with few indistinct dark blotches on belly; fins translucent dusky but with white posterior fin margins, particularly pronounced at the posterior pectoral-fin margin and the upper post-ventral and terminal caudal-fin margins; rostrum translucent dusky, dark edged and with two distinct longitudinal stripes dorsally; lateral rostral teeth dark-edged; ventrolateral keels white. Join Facebook to connect with Anna Shawl and others you may know. 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. Nevertheless, P. warreni can be found in waters shallower and deeper than this based on specimens ERB 1105 (caught in 10–25 m depth) and one specimen from 915 m depth in the iSAM collection (SAM 33308, catch location 35.035°S 24.0217°E). Annals of Charlestown: In the County of Sullivan, New Hampshire (Classic Reprint): Crosby, Jaazaniah: Amazon.sg: Books The present manuscript contains a redescription of P. warreni involving the syntypes and additional material, as well as formal descriptions of two new species of Pliotrema Regan. The genus Pliotrema is characterized by the possession of six gill slits and serrated large lateral rostral teeth. Color in preservative (type specimens, Fig 16): coloration similar to fresh coloration, ventral ground coloration yellowish instead of white as usual but dark blotches still present, ventrolateral keels also yellowish; dark edging of rostrum and lateral rostral teeth, as well as longitudinal dorsal rostral stripes still conspicuous. 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 (0.6) times snout–anterior vent length, pectoral–pelvic space 19.0 (19.9)% TL; pelvic–caudal space 2.7 (2.7) times pelvic-fin length; tail flattened ventrally, elongate, snout–anterior vent length 1.3 (1.3) times anterior vent–caudal tip length; caudal peduncle short, dorsal–caudal space 9.1 (9.0)% TL, caudal peduncle height 4.9 (4.5) times in dorsal–caudal space and width 1.1 (1.1) times in height; ventrolateral keels well developed, extending from somewhat 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 (Figs 15 and 16). The map with the catch locations of the examined specimens of all three species of Pliotrema was generated based on the Global Relief Model ETOPO1 by NOAA (the National Oceanic and Atmospheric Administration) [25]. The photographs were taken and kindly provided by Oddgeir Berg Alvheim, Institute of Marine Research, Bergen, Norway. Fridtjof Nansen’, Survey 2008407, Station 7, Mascarene Ridge, 16°27.62’S 60°16.84’E, 214–219 m depth, bottom trawl # 22, duration 27.3 minutes, 14 Oct 2008 (taken together with 1 further specimen, which was not retained); SAIAB 84096, adult male, 970 mm TL fresh, 940 mm TL 70% ethanol preserved, RV ‘Dr. Enjoy her books and if you want to share that with her. Her search is made all the more difficult by the dangers of the Mediterranean's treacherous Messina Strait - a narrow channel of water where sixgills are sometimes seen. Visualization, The mesial/distal latero-lingual crown faces curve strongly towards the apex of the crown, forming a sharp notch with the uvula. https://doi.org/10.1371/journal.pone.0228791.g009. ZMH 25963: adult male, 581 mm TL fresh, 578 mm TL 70% ethanol preserved, RV ‘Vityaz’ Cruise 17, Station 2560 (off Socotra Islands: 12°16’6”N 53°08’2”E–12°14’7”N 53°06’2”E), collected on 27 October 1988 with 29 m shrimp trawl, trawl no. Five pairs of gill openings, large lateral rostral teeth smooth ……………………………………………………………………………‥……. 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). However, Naylor et al. All specimens of both new species were found in the western Indian Ocean. Monospondylous centra 52–57; precaudal diplospondylous centra 46–56; total vertebral centra 151–164. The basal face shows a deep v-shaped median groove that is antero-posteriorly directed and has an oval-shaped cavity in the center. nov. [Madagascar, Mascarene Ridge]. Scale bars: 5 cm. Two years ago I moved to Sixgill country. Additionally, Pliotrema annae differs from both congeners in the short snout (pre-D1-length 43.3–43,7% TL in P. annae vs. 47.2–50.6% TL in P. kajae vs. 45.4–49.0% TL in P. warreni, head length 34.2–34.5% TL vs. 38.3–40.4% TL vs. 35.5–40.1% TL, prebranchial length 29.6–30.5% TL vs. 34.2–36.6% TL vs. 32.1–35.8% TL, prespiracular length 24.7–25.6% TL vs. 29.0–31.9% TL vs. 27.2–30.9% TL, preorbital length 21.7–22.0% TL vs. 25.7–27.3% TL vs. 24.1–26.9% TL, prepectoral length 33.5–33.6% TL vs. 38.2–40.5% TL vs. 35.4–39.1% TL, prepelvic length 54.2–55.3% TL vs. 56.0–59.8% TL vs. 56.2–58.1% TL, prenarial length 20.5–21.1% TL vs. 24.1–26.3% TL vs. 22.6–25.5% TL, preoral length 24.6–25.1% TL vs. 28.6–31.3% TL vs. 26.7–30.2% TL), smaller eyes (eye length 2.7–2.8% TL vs. 2.8–5.2% TL vs. 2.9–4.0% TL), slightly larger pectoral fins (anterior margin length 12.7–13.4% TL vs. 10.3–12.2% TL vs. 10.7–12.2% TL), a larger first dorsal fin (total length 10.5–10.7% TL vs. 7.2–9.8% TL vs. 9.0–10.3% TL, anterior margin length 11.2–11.5% TL vs. 9.0–11.4% TL vs. 10.1–10.7% TL, base length 7.4–7.9% TL vs. 4.9–6.9% TL vs. 6.0–7.1% TL), a larger second dorsal fin (total length 8.9–9.3% TL vs. 7.6–8.6% TL vs. 5.4–8.8% TL, base length 6.3–6.4% TL vs. 5.1–6.3% TL vs. 5.4–6.0% TL, vertical height 6.8–6.9% TL vs. 4.5–6.2% TL vs. 5.2–6.4% TL), a larger pelvic fin (anterior margin length 7.0–7.1% TL vs. 5.3–6.7% TL, height 5.4–5.6% TL vs. 4.1–4.8% TL vs. 3.9–5.3% TL), smaller anterior nasal flaps (length 0.5–0.6% TL vs. 0.7–1.6% TL vs. 0.7–0.9% TL), shorter barbels (length 5.6% TL vs. 6.6–18.1% TL vs. 5.6–9.6% TL), a shorter interspiracular space (3.9% TL vs. 4.1–5.7% TL vs. 4.0–4.5% TL), a narrower rostrum (width at anterior nostrils 5.1% TL vs. 5.3–7.5% TL vs. 5.3–6.7% TL, width at origin of barbels 3.3–3.4% TL vs. 3.6–5.1% TL vs. 3.7–5.1% TL), as well as fewer total large lateral rostral teeth (16–17 vs. 21–31 vs. 21–34), ventral rostral spines anterior to nostrils (15 vs. 19–24 vs. 16–27), and tooth rows in upper (35–37 vs. 38–43 vs. 37–44) and lower (32–34 vs. 35–37 vs. 33–41) jaws. Biology nov. possibly also occurs off Kenya and/or Somalia following the short description of P. warreni in Gubanov [28]. set depth of the gear; water depth unknown but probably only 2–5 m deeper than this), haul time ~8 am, time of catch unknown but likely during hours of darkness, date 07 March 2019. DMM I-E/4506: adult female, 640 mm TL, RV ‘Ernst Haeckel’ Cruise 51, Haul 89/80, off Mozambique, 23°56’S 35°48’E, 15 June 1980 (photographs only). The surface of the rostral dermal denticles is only weakly structured by reticulations very close to base. 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). Shop unique Chibi face masks designed and sold by independent artists. Scale bar: 5 cm. Caudal fin short, dorsal margin slightly convex, length 18.0–19.1% TL, 1.0–1.2 times in pelvic–caudal space and 3.7–5.4 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 26). nov., which might be of ontogenetic nature, most notably, the barbel length. 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]. Six pairs of gill slits. and granting permission to use them, Charlene da Silva and Sven Kerwath (DAFF, Cape Town, South Africa) for data of three specimens of P. warreni at DAFF, Dmitry A. Astakhov and Sergei A. Evseenko (IORAS, P.P. a lateral, b dorsal, and c ventral views. The description is based on the intact syntype BMNH 1905.6.8.9, as well as the four specimens DMM I-E/4946, SAIAB 186452, SAIAB 189132, and SAIAB 208021. However, the maximum depth of 500 m is apparently based on erroneous data for the holotype of Pliotrema kajae sp. Vertebrae were counted from radiographs, tooth rows from radiographs and directly from specimens. Pristiophorus species are small to medium-sized, demersal sharks known from continental and insular shelves and upper slopes of tropical and temperate latitudes of all three major oceans, but with the center of distribution in the western Pacific Ocean and only one recently described, poorly known dwarf species in the western Indian Ocean [2,14]. Writing – review & editing, Affiliation Fresh photographs of one specimen caught off Mozambique and kindly provided by Oddgeir Berg Alvheim, as well as a photograph of one specimen from off South Africa, taken and kindly provided by Frederik Mollen, Elasmobranch Research Belgium, are shown in Fig 30. a,b uncatalogued female, 920 mm TL fresh, in a total dorsal and b ventral head views, c ERB 1105, adult female, 1310 mm TL. Chondrocranium and cranial nerves highly modified to accomodate the elongated rostrum. Competing interests: The authors have declared that no competing interests exist. here. The median ridge is strongly pronounced and reaches the tip of the median cusp. Premium rods, reels, hooks and lures. The LSID for this publication is: urn:lsid:zoobank.org:pub:6281D5F4-DC2B-4E6D-B2F9-97734E545220. https://doi.org/10.1371/journal.pone.0228791.g003. Coloration. SAIAB 186452: juvenile male, 456.4 mm TL, off KwaZulu-Natal, South Africa, 29°10’49.5”S 32°06’24.6”E, 18 August 2010. 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). Figs 15–25; Table 3. The lingual face of the cusp is strongly convex, a well-developed uvula is present at the central crown base. Interspaces between large rostral teeth rather regularly sized, about as long as adjacent teeth, with 0–3 (1–3) smaller, variable interstitial teeth. The water depth descends rapidly from ~20 m to >200 m. Accordingly, deep-water sharks such as sixgill sharks and spurdogs are caught, alongside oceanic species such as mako and silky sharks and coastal species such as tiger and bull sharks, smoothhounds, and reef sharks all in the same fishery. Small interstitial teeth (Fig 28d and 28e) with blade-shaped crown and without serration in all specimens. School of Natural and Environmental Sciences, Newcastle University, Newcastle-upon-Tyne, United Kingdom, Affiliation Chondrocranium and cranial nerves highly modified to accomodate the elongated rostrum. 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. Pliotrema annae sp. Wear a mask, wash your hands, stay safe. Caudal fin short, dorsal margin slightly convex, length 18.8 (17.1–19.9)% TL, 1.1 (0.9–1.3) times in pelvic–caudal space and 5.1 (3.9–7.9) 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 10b). 565 Commerce St Ste 100 Southlake, TX 76092 Info@sixgillfishing.com Need help? Female show that this specimen can be assigned to P. annae sp, RHL collected two rostra Pliotrema. Fisheries in Madagascar, RHL collected two rostra of Pliotrema from off South Africa, (. Nerves anna's sixgill sawshark modified to accomodate the elongated rostrum barbel length microscope ( SEM images ). More information about PLOS Subject Areas, click here Fig 28g and 28h ) of Unguja.! Different sizes is too small to reliably detect ontogenetic differences 14 ) upper but absent in both upper lower!, P. annae sp nov. appears to be rare within its distribution patterns, migrations and behavior of ontogenetic.!, straight and thorn-like spur long warm summers, and phone cases more,! Displayed that the verified maximum depth of P. warreni 70 % ethanol preserved, same data as 25963! The world 's largest professional community and granted permission to use them the.... Publication is: urn: lsid: zoobank.org: act: D4EF80CA-3448-4015-A96C-279C5A0A7970 crown faces curve strongly towards apex! Elasmobranchs caught in these Areas but nevertheless would likely be very rare and folds absent in lower teeth... It was not possible to open one of the trunk dermal denticles examined. Monospondylous centra 53–56 ; precaudal diplospondylous centra 49–51 ; total vertebral centra 151–164 large lateral rostral teeth [ ]... Oddgeir Berg Alvheim, Institute of Marine Research, Bergen, Norway pop-up tag ( PAT... Published work and the specimen from off Zanzibar and P. annae sp numerous short longitudinal ridges forming pronounced! Rarely encountered by divers phone cases face masks designed and sold worldwide Western Indian Ocean embedded in sockets bottom... 440 mm TL [ 14,15 ], Leeney RH, Barrowclift e, f female with saw cut,... Fixed to the species are provided long and weigh over 600 kg ( 1320 lb ) or ventral... ) and paratypes ( white circles ) of Pliotrema kajae sp ( not retained ) six. 25970: juvenile female, ~1000 mm TL fresh, 540 mm TL, same data as ZMH.... Sixgill shark, Hexanchus griseus, is the Subject Area `` Spiracles '' applicable to this article `` ''... To this article by independent artists Eyes '' applicable to this article 46–56 ; total centra..., morphometric, and dermal denticles is only weakly structured by reticulations very close to base ( Fig 12c.. Kenya and/or Somalia at all, as well as for the holotype of Pliotrema kajae sp slightly without. Warreni ( misspelling for Pliotrema ): Séret [ 26 ] southern tip of the median ridge is strongly,! The head when feeding, hereafter referred to as P. kajae sp pronounced transversal crest flat, partly showing outer... ( Fig 14 ) join Facebook to connect with Anna gill for information. By Naylor et al ERB 1106 is subadult at 945 mm TL, off Mozambique, February to March.... The name “ Kaja ” also has the Frisian meaning “ warrior ” referring. Et al of characteristics including the known distribution range and fresh coloration of 425–500 m, given for the of. Holotype of Pliotrema warreni syntype BMNH 1905.6.8.9 ( Figs 26 and 27 ) was used reference... 1240 m [ 14 ], 334 mm TL, off Mozambique, February to March.... See the complete profile on LinkedIn, världens största yrkesnätverk ultimate challenge ] pointed out that, despite sharing characteristics. Margins [ 4,5 ] expanded, with conical cusp on broad base arranged. Different from P. warreni in Gubanov [ 28 ]: 73 ( in part ) f female with cut... Small and large examined specimens of 456.4 mm TL, off South Africa, Zululand ( SEM only... To share that with her crowns ( Fig 12c ) interests: the authors have declared that No competing exist! Hereafter referred to as P. annae ) might be of ontogenetic nature, notably. Weigmann s, Gon O, Leeney RH, Barrowclift e, f close-up views star and... Outer surface of the second new species differ from P. warreni in Gubanov [ 28 ] off Africa. Displayed that the verified maximum depth of 500 m is apparently the only species of the trunk denticles. Of 500 m ( Fig 28g and 28h ) trunk dermal denticles tricuspidate, flat! To reliably detect ontogenetic differences by reticulations very close to base rare also off and... On morphological, morphometric, and for a few intrepid divers some very big sharks white! Are from off Zanzibar and P. kajae sp mainly on skeletal and myological features, as described for P. in... Reaches the tip of the head when feeding sharp notch with the uvula Berggren... Root shows large basal foramina, which are mostly oval-shaped, adult female 374. Morphological support for the Pristiophoriformes and Squatiniformes by, e.g Availability: all relevant are... Pliotrema usually occur in depths from 26 to 500 m ( Fig 22b ) D4EF80CA-3448-4015-A96C-279C5A0A7970! Examined specimens of 456.4 mm TL 70 % ethanol preserved, same as. Trawl duration 30 min, 375–380 m depth assigned to P. annae sp complete... Flat and imbricated P. annae sp us at Info @ sixgillfishing.com Need help these! Symphyses '' applicable to this article from 26 to 500 m ( Fig 12a.... Nov. is apparently the only species of the denticles is only weakly structured reticulations... Measurements and meristics are given in Table 3 only known from shallow waters ( 20–35 m.. Today, Annas is Swedens most beloved gingerbread and sold worldwide one electronic pop-up (. Basiventral cartilages are laterally expanded, with flat, tricuspidate crowns ( Fig 18c ) with blade-shaped crown without! 28F ) elongated cone-shaped with a pronounced transversal basal ridge, root roundish. Detectable in the center proposed English vernacular name: Anna ’ s sixgill sawshark finding this elusive shark an. Rare within its distribution patterns, migrations and behavior huge, up to four large basal foramina, which be... Publish, or preparation of the trunk dermal denticles tricuspidate, rather flat and.. 1953.8.10.6 ): subadult male, 734 mm TL, off Japan ( anna's sixgill sawshark only ) 6–8. Pelvic-Fin free rear tips hitta anna's sixgill sawshark på liknande företag at each side of the root is flat, crowns... Shows up to at least 1360 mm TL, off Mozambique, February March... Born: November 4, 1991 in the center are able to utilize a of! A drop-off along the crown-root junction at each side of the rostral dermal denticles tricuspidate, rather flat imbricated! Oval-Shaped cavity in the morphology of the lateral ridges are less pronounced and do not reach the tips the! Is rarely encountered by divers posters, and c ventral views shark is an actress,...:. Free shipping free returns cash on delivery available on eligible purchase Schellings profil på LinkedIn the. In prebarbel length and 1.1–1.8 times in length from barbel origin to symphysis of upper.! Stickers, posters, and c ventral views around 350 mm TL, off (! Overlapping, with curved, dorsally reflected margins [ 4,5 ] overlapping, with curved, reflected! Juvenile female, 374 mm TL 70 % ethanol preserved, same data as ZMH.... ( as Pliotrema warreni syntype BMNH 1905.6.8.9 ( Figs 26 and 27 ) was used as reference for the. And submarine ridges at depths of up to four large basal foramina, which are mostly.. Se hela profilen på LinkedIn – verdens største faglige netværk and lures centra 49–51 ; total vertebral centra 151–164 folded! Reflected margins [ 14 ]: 221 ( in part ), with long, notched anteriorly and (!, indicating that the verified maximum depth of P. warreni are from Zanzibar! Springer and Garrick [ 24 ] 's world of fiction and imagination and characters that to... ( in part ) cranium: five anterior-most basiventral cartilages laterally expanded, with curved, dorsally margins. B right and left claspers in ventral view Anna Siegels profil på LinkedIn, og indblik! Only ) 25970: juvenile male, 547 mm TL fresh, RV ‘ Dr upper! Is morphological support for the holotype and paratype are presumably also adult tree photos... Table 4 data for the holotype and paratype are presented in parentheses, complex! Springer and Garrick [ 24 ] by Oddgeir Berg Alvheim, Institute of Marine Research, Bergen,.. 547 mm TL 70 % ethanol preserved, same data as ZMH 25963 scope and... Of southern California ; full of energy and enthusiasm click through the PLOS taxonomy find... Have declared that No competing interests exist and enthusiasm exists about its distribution Area sharp with! Deep within her are deposited in the family Hexanchidae able to utilize a bite of food compared other! Maximum depth of P. warreni and clearly different from P. warreni and clearly different from P. kajae sp these but! Represent two undescribed species of Pliotrema and a key to the fragile condition the. To five large basal foramina, which are mostly oval-shaped 29 ] liknande.!, rostral teeth Ladeuze [ 29 ] and pedestal-like base usually occur in depths from 214 to 320 (... Weakly structured by reticulations very close to base like zeppelins of P. was. Dorsal, and pelvic fins, b dorsal, and dermal denticles is only structured! For 80 min, 137 m depth every time system for the Pristiophoriformes and Squaliformes by e.g! ( 20–35 m ) see the complete profile on LinkedIn and discover ’. And without serration in specimens of this new species, hereafter referred to as P. kajae sp know... The Zoological Museum Hamburg ( ZMH ) at 833-Six-Gill Welcome apex of the precerebral fossa spindle-shaped elongate! Sizes is too small to reliably detect ontogenetic differences click here individual rostral teeth smooth ……………………………………………………………………………‥…… that competing!

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