Anchistrocheles, from here.

Belongs within: Ostracoda.
Contains: Bairdia.

The Bairdiidae are a family of marine ostracods with a convex-backed carapace and wide duplicature (Benson et al. 1961).

Characters (from Benson et al. 1961): Carapace convex-backed, mostly with asymmetrical, angulated, convex and concave, round and acuminate "bairdian" shape in lateral view; lateral outlines mostly symmetrically convex and terminally acuminate in dorsal view; left valve larger than right valve, both overreaching and overlapping it; with short, ridge-and-groove hingement and prominent duplicature and vestibule; muscle-scar pattern composed of several discrete spots.

<==Bairdiidae [Bairdiacea, Bairdiocyprididae, Bairdioidea]
    |--Pussellinae DH86
    |    |--Pussella Danielopol 1976 DH86
    |    |    |--P. botosaneanui Danielopol 1976 DH86
    |    |    `--P. danielopoli Maddocks 1976 DH86
    |    `--Anchistrocheles (Brady & Norman 1889) DH86
    |         |--A. barnharti Maddocks 1976 DH86
    |         |--A. bensoni Maddocks 1969 DH86
    |         |--A. bradyi (Scott 1905) DH86
    |         |--A. fumata (Brady 1890) DH86
    |         |--A. hartmanni Maddocks 1976 DH86
    |         `--A. mcquadei Maddocks 1976 DH86
    `--Bairdiinae DH86
         |--Bairdia HM04
         |--Bairdoppilata Coryell, Sample & Jennings 1935 DH86
         |    `--B. cratericola Maddocks 1969 DH86
         |--Paranesidea Maddocks 1969 DH86
         |    |--P. algicola Maddocks 1969 DH86
         |    |--P. fracticorallicola Maddocks 1969 DH86
         |    `--P. spongicola Maddocks 1969 DH86
         |--Triebelina van den Bold 1964 DH86
         |    |--T. bradyi (Triebel 1948) DH86
         |    |--T. raripila (Müller 1894) DH86
         |    `--T. sertata (Triebel 1948) DH86
         `--Neonesidea Maddocks 1969 DH86
              |--N. aregina Maddocks 1969 DH86
              |--N. maddocksae Hartmann 1974 DH86
              |--N. michaelseni Hartmann 1982 DH86
              |--N. pateriformes Maddocks 1969 DH86
              `--N. schulzi (Hartmann 1964) DH86

Bairdiidae incertae sedis:
  Rectobairdia Sohn 1960 ZL87
    |--R. jinchengensis Shi 1987 ZL87
    |--R. legumen (Jones & Kirkby 1886) [=Bairdia legumen; incl. B. angulatiformis Posner 1951] S82
    `--R. subsymmetrica Zhang in Zhang & Liang 1987 ZL87
  Pustulobairdia Sohn 1960 ZL87
    |--P. pruniseminata (Sohn 1954) ZL87
    `--P. subpruniseminata Zhang in Zhang & Liang 1987 ZL87
  Petasobairdia CB86
  Lobobairdia Kollmaun 1963 ZL87
    `--L. ventriconcava (Chen 1958) [=Bairdia ventriconcava] ZL87
  Abrobairdia Chen 1982 CB86
    |--A. brevicosta CB86
    `--A. monocosta Chen & Bao 1986 CB86
  Healdianella Posner 1951 CB86
    |--H. miaohuangensis Wang 1983 CB86
    `--H. subcuneola Posner 1951 S82
  Cryptobairdia Sohn 1960 ZL87
    |--C. coryelli (Roth & Skinner 1931) (see below for synonymy) CB86
    |--C. submanifesta Zhang in Zhang & Liang 1987 ZL87
    |--C. subseminalis Zhang in Zhang & Liang 1987 ZL87
    `--C. xiaodonggouensis Shi 1987 ZL87
  Bairdiacypris Bradfield 1935 HM04
    |--B. glennensis (Harlton 1927) HM04
    |--B. longirobusta CB86
    |--B. reniformis CB86
    |--B. sinensis CB86
    |--B. ventralis CB86
    `--B. yui Shi 1960 ZL87
  Acratia Delo 1939 ZL87
    |--A. bicornis Shi 1987 ZL87
    |--A. comisa Zhang in Zhang & Liang 1987 ZL87
    |--A. deloi (Geis 1932) ZL87
    |--A. olivifera CB86
    |--A. pulchra Posner 1951 CB86
    `--A. siratchoica Egorov 1953 CB86
  Orthobairdia Sohn 1960 ZL87
    |--O. cestriensis (Ulrich 1891) [=Bairdia cestriensis] S82
    |--O. chasae (Kellett 1934) [=Bairdia chasae] ZL87
    |--O. florenaensis (Upson 1933) [=Bairdia florenaensis] ZL87
    |--O. insolens (Cooper 1941) [=Bairdia insolens] CB86
    |--O. ponderosa (Chen 1958) [=Bairdia ponderosa] CB86
    |--O. powersi (Kellett 1934) [=Bairdia powersi; incl. B. perincerta Cordell 1952] CB86
    |--O. texana (Harlton 1927) CB86
    `--O. xingyangensis Zhang in Zhang & Liang 1987 ZL87

Cryptobairdia coryelli (Roth & Skinner 1931) [=Bairdia coryelii; incl. B. ventricosa Roth & Skinner 1930 non Kirkby 1858] CB86

*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.

[DH86] Danielopol, D. L., & G. Hartmann. 1986. Ostracoda. In Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) (L. Botosaneanu, ed.) pp. 265-294. E. J. Brill / Dr. W. Backhuys: Leiden.

[HM04] Hoare, R. D., & G. K. Merrill. 2004. A Pennsylvanian (Morrowan) ostracode fauna from Texas. Journal of Paleontology 78 (1): 185-204.

[S82] Shi C.-G. 1982. Some early Carboniferous ostracodes from Nylam, Xizang (Tibet). Acta Palaeontologica Sinica 21 (3): 309-314.

[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.

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