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Ostracoda_WoRMS
Bythocypris Brady, 1880
EOL Text
Paratype for Bythocypris promoza Maddocks
Catalog Number: USNM 139928
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Sex/Stage: female;
Preparation: Slide
Collector(s): University of Southern California
Year Collected: 1962
Locality: Panama, North Pacific Ocean
Depth (m): 2489 to 2489
Vessel: Eltanin R/V
- Paratype:
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | This image was obtained from the Smithsonian Institution. Unless otherwise noted, this image or its contents may be protected by international copyright laws. |
Source | http://collections.mnh.si.edu/search/iz/?irn=103858 |
For the soft part anatomy, I follow Horne et al., 2002 (Horne DJ, Cohen A, Martens K. 2002. Taxonomy, morphology and biology of Quaternary and living Ostracoda. In: Holmes JA, Chivas AR, editors. The Ostracoda. Applications in Quaternary Research. Washington, DC: American Geophysical Union. p 5-35.).
We use the following terms for the limbs/furca from anterior to posterior with alternative names in parenthesis:
- antennula (antenna I, Aa, AI, first antenna)
- antenna (antenna II, AII, Au, second antenna)
- mandibula (mandible, Md)
- Maxillula (first maxilla, maxilla I, maxillule, MxI, Mxu)
- Fifth limb (ApV, Appendage V, first thoracic leg, maxilla, maxilla I, MxI, Mxu, maxilliped, clasper (for males), P1, second maxilla, walking leg)
- Sixth limb (ApVI, Appendage VI, first thoracic leg, second thoracic leg, P2, walking leg)
- Seventh limb (ApVII, Appendage VII, cleaning limb, P3, second thoracic leg, third thoracic leg, walking leg)
- Male copulatory limb (eighth limb, hemipenis, uropod). Whether the Male copulatory limb is homologous to a crustacean limb remains controvertial.
- Furca (caudal rami, Fu, furcal rami, uropods). The homology of the podocopan furca (anterior to the anus) to a myodocopan furca (posterior to the anus) remains controversial. Similarly, the homology of the ostracod furca to the furca of other crustaceans remains controvertial.
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Source | http://ostracoda.lifedesks.org/pages/6115 |
Valves quite large; elongate and inequilateral (anterior margin more broadly rounded than posterior margin) in lateral view. External surface smooth, radial pore canals simple, with or without rim. LV with rounded outline, ventral margin straight, with upswung posterior angle, smoothly rounded dorsal margin. RV fairly sinuous in outline, especially the ventral margin; with truncate anterior margin, and slightly concave anterodorsal and posterodorsal margins. Females higher in relation to length than males. Adductor muscle scars bythocytherid, with 3 anterior (subdivided) scars and 1 posterior (subdivided) scar. Zone of concrescence fairly narrow with numerous short, straight marginal pore canals. Carapace subovate in dorsal view.
Antennula robust with not very long setae. Exopodite of antenna with 2 long and 1 short setae; segment VI of male with 1 long claw, 1 sexually dimorphic “6-segmented” medium-sized fused seta, and 2 or 3 simple medium-sized seta; segment VI of female with 1 long claw, 1 sexually dimorphic simple fused medium-sized claw, 2 or 3 medium-sized sim ple setae. Base of mandibula with 1 anterodorsal seta, masticatory process with 5 teeth plus several short setae; exopodite with 1 very long and 2 long feathered setae (one of the mandibles of one specimen with 1 very long and 3 long setae); segment IV of palp with 2 or 3 medium-sized setae and 2 mediumsized plumose claws. Maxillula with 5 to 9 strahlen (!) and 25 or 26 feathered setae; each endite with 1 to 4 plumose claws and around 5 setae; palp with 3 dorsal and 2 ventral setae, and 1 modified plumose claw. Fifth limb with 6 to 11 strahlen and 5 to 10 feathered setae, segment II might or might not be fused to segment III. Exopodite of sixth and seventh limbs with 2 medium-sized setae; one Ap of 1 specimen (SNB 0110) with 2 instead of 1 seta on segment 4. Furca with 2 rudimentary setae on dorsal margin; ventral margin with 4 or 5 short proximal setae, 1 medium-sized thin setae, 2 medium-sized robust setae, and 1 short distal seta. One short seta between furca rods. Genital lobe subtriangular, or suboval with tubularly extended distal margin. Male copulatory limb with coiled vas deferens; strongly sclerotized, sub-rectangular, arched, short proximal lobe; and subconical distal lobe armed distally with numerous chitinous spines.
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Source | http://ostracoda.lifedesks.org/pages/6105 |
Weddell Sea, Southern Ocean (Atlantic Sector), 4059 to 4895m.
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Source | http://ostracoda.lifedesks.org/pages/6105 |
Paratype for Bythocypris promoza Maddocks
Catalog Number: USNM 139917
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Alcohol (Ethanol)
Collector(s): University of Southern California
Year Collected: 1962
Locality: Panama, North Pacific Ocean
Depth (m): 2489 to 2489
Vessel: Eltanin R/V
- Paratype:
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | This image was obtained from the Smithsonian Institution. Unless otherwise noted, this image or its contents may be protected by international copyright laws. |
Source | http://collections.mnh.si.edu/search/iz/?irn=103847 |
A, adult; (A-1), (A-2), (A-3), juvenile instars; E (after a station number), epinet of the epibenthic sledge; F, female; H, Height; L, length; LV, left valve; M, male; RV, right valve; S (after a station number), supranet of the epibenthic sledge; SNB, specimen number as catalogued by the Brandão, S. N. (throught this number, it is possible to assign correctly the valves of a single specimen kept in a micropaleontological slide to their dissected appendages in a glass slide); V, valve; ZMH, Zoologisches Institut und Museum, University of Hamburg (Germany); ZMH K-, abbreviation of the Crustacea collection of the Zoologisches Institut und Museum, University of Hamburg (Germany); #, station number.
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Source | http://ostracoda.lifedesks.org/pages/6115 |
For its resemblance to B. reniformis Brady, 1880.
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Source | http://ostracoda.lifedesks.org/pages/6109 |
TYPE LOCALITY: # 133–2, Research Vessel Polarstern; Cruise PS67/ANTXXII-3; Project ANDEEP III; 16.03.2005; epibenthic sledge trawled from 62°46.73'S -53°2.57'W - 1582 meters depth to 62°46.34'S -53°4.14'W -1581 meters depth.
# 132–2, Research Vessel Polarstern; Cruise PS61/ANTXIX-4; Project ANDEEP II; 06.03.2002; epibenthic sledge trawled from 65°18.25'S-53°22.79'W-2082 meters depth to 65°17.62'S-53°22.86'W-2084 meters depth.
# 133–3, Research Vessel Polarstern; Cruise PS61/ANTXIX-4; Project ANDEEP II; 07.03.2002; epibenthic sledge trawled from 65°20.40'S-54°14.11'W-1123 meters depth to 65°20.09'S-54°14.36'W-1123 meters depth.
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Source | http://ostracoda.lifedesks.org/pages/6109 |
Paratype for Bythocypris mozambiquensis Maddocks
Catalog Number: USNM 121602
Collection: Smithsonian Institution, National Museum of Natural History, Department of Invertebrate Zoology
Preparation: Slide
Year Collected: 1964
Locality: Mozambique Channel, Off Madagascar, Indian Ocean
Depth (m): 2750 to 2750
Vessel: Anton Bruun R/V
- Paratype:
License | http://creativecommons.org/licenses/by/3.0/ |
Rights holder/Author | This image was obtained from the Smithsonian Institution. Unless otherwise noted, this image or its contents may be protected by international copyright laws. |
Source | http://collections.mnh.si.edu/search/iz/?irn=87255 |
LV outline sub-rectangular; with smoothly arched dorsal margin; steep posterodorsal margin; broadly rounded anterior margin; slightly concave ventral margin; maximum height posterior to mid-length. RV subtrapezoidal; with fairly straight anterodorsal margin; sinuate posterodorsal margin; truncate anterior margin; concave ventral margin; maximum height at mid-length. LV and RV with obtuse posterior angle. Maximum length inferior to mid-height. Calcified inner lamella fairly narrow; zone of concrescence very narrow, with numerous straight marginal pore canals. Adductor muscle scars bythocypridid, occupying less than 1/3 of valve height.
Antennula very robust; with relatively short and very strongly sclerotized setae; podomeres II and III fused; chaetotaxy. Antenna stout; with short podomeres III, IV and VI; exopodite with 2 long and 1 tiny setae; podomere VI wider than long, with 1 long and 1 medium-sized claws, 1 tiny seta, and 2 medium-sized setae. Mandibula with 3 feathered setae on the exopodite; masticatory process with 1 or 2 bifurcate and 3 or 4 trifurcate teeth and several short setae. MaxilluIa with 7 strahlen and 24 or 25 feathered setae; ventral endite with 2 ventral setae and several broad, feathered, distal claws; other endites with 1 ventral seta each plus several simple distal setae; all setae of palp not feathered. Vibratory plate of fifth limb with 4 or 5 long strahlen and 10 medium-sized setae; podomeres of fifth to seventh limbs robust, with long and feathered terminal claws; exopodite of sixth and seventh limbs with or without 1 tiny seta. Furca with 2 short, 1 medium-sized, and 2 long feathered setae; one tiny seta between furcal rods. Genital lobe sub-oval with tubular internal process.
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Rights holder/Author | I agree |
Source | http://ostracoda.lifedesks.org/pages/6115 |