Cyprideis torosa, from here.

Belongs within: Cytheroidea.

The Cytherideinae are a group of ostracods known from the Permian to the present day (Benson et al. 1961). The outline of the shell may be smooth overall or there may be denticulations at the anterior and/or posterior ends.

Characters (from Benson et al. 1961): Surface smooth, pitted or reticulate. Hinge antimerodont or holomerodont, some genera containing species with reversed valves, normal left valve hinge appearing in right valve and vice verse; marginal areas widest anteriorly where inner margin usually departs from line of concrescence (with similar but smaller departure common posteriorly); radial canals variable in number but usually rather abundant; muscle scars in vertical row of four, usually with two equally spaced ovate scars in front and commonly additional scars above and below.

<==Cytherideinae [Perissocytherideinae]
    |--Basslerella Kellett 1935 CB86
    |    |--B. crassa Kellett 1935 CB86
    |    |--B. gongxianensis Zhang in Zhang & Liang 1987 ZL87
    |    |--B. obesa Kellett 1935 ZL87
    |    |--B. ola Chen & Bao 1986 ZL87
    |    `--B. tota Chen & Bao 1986 CB86
    |--Cytheridea moorei F71
    |--Cyprideis Jones 1857 S-VC91
    |    |--C. currayi Swain 1967 S-VC91
    |    |--C. limbocostata Hartmann 1974 G83
    |    `--C. torosa (Jones 1850) G83
    |--Pumilocytheridea van den Bold 1963 S-VC91
    |    `--P. vermiculoidea Swain 1967 S-VC91
    `--Perissocytheridea Stephenson 1938 NT02
         |--*P. matosoni (Stephenson 1935) NT02
         |--P. japonica Ishizaki 1968 [=Clithrocytheridea japonica] NT02
         `--P. meyerabichi (Hartman 1953) S-VC91

*Type species of generic name indicated


Benson, R. H., J. M. Berdan et al. 1961. Systematic descriptions. In: Moore, R. C. (ed.) Treatise on Invertebrate Paleontology pt Q. Arthropoda 3: Crustacea: Ostracoda pp. Q99–Q421. Geological Society of America and University of Kansas Press.

[CB86] Chen D.-Q. & Bao H. 1986. Lower Permian ostracodes from the Chihsia Formation of Jurong and Longtan, Jiangsu Province. Acta Micropalaeontologica Sinica 3 (2): 107–132.

[F71] Fletcher, H. O. 1971. Catalogue of type specimens of fossils in the Australian Museum, Sydney. Australian Museum Memoir 13: 1–167.

[G83] Gottwald, J. 1983. Interstitielle Fauna von Galapagos. XXX. Podocopida 1 (Ostracoda). Mikrofauna des Meeresbodens 90: 1–187.

[NT02] Nakao, Y., & A. Tsukagoshi. 2002. Brackish-water Ostracoda (Crustacea) from the Obitsu River estuary, central Japan. Species Diversity 7 (1): 67–115.

[S-VC91] Segura-Vernis, L. R., & A. L. Carreño. 1991. Foraminíferos y ostrácodos de la Laguna de La Paz, Baja California Sur, México. Inv. Mar. CICIMAR 6 (1): 195–224.

[ZL87] Zhang X.-J. & Liang X.-Y. 1987. Ostracoda from the Taiyuan Formation of Xingyang and Gong Xian districts, Henan. Acta Micropalaeontologica Sinica 4 (3): 293–312.

No comments:

Post a Comment

Markup Key:
- <b>bold</b> = bold
- <i>italic</i> = italic
- <a href="">FoS</a> = FoS