Kirkbyoidea

Right and left valves of Polytylites trilobus, from Hoare & Merrill (2004).


Belongs within: Ostracoda.

The Kirkbyoidea are a group of reticulate, straight-backed ostracods known from the Devonian to the Middle Permian (Benson et al. 1961).

Characters (from Benson et al. 1961, as Kirkbyacea): Reticulate, straight-backed, with or without lobes, nodes and carinae; ridge-and-groove hingement, with or without terminal dentition; valves subequal, overlap slight; free margin of one valve rabbeted to receive opposing valve; one or more marginal rims, dimorphism unknown.

<==Kirkbyoidea [Kirkbyacea, Kirkbyocopina]
    |--Amphizona Kesling & Copeland 1954 [Arcyzonidae] ZL87
    |    `--A. asceta (Kesling & Copeland 1954) ZL87
    |--Kindlella Sohn 1954 [Kellettinidae] HM04
    |    |--K. fissiloba Sohn 1954 HM04
    |    `--K. proscillata Hoare & Merrill 2004 HM04
    |--Roundyella Bradfield 1935 HM04 [Scrobiculidae ZL87]
    |    |--R. bellatula Bradfield 1935 HM04
    |    |--R. nodomarginata (Bradfield 1935) HM04
    |    |--R. papilliformis (Wang 1978) CB86
    |    |--R. simplex (Girty 1910) HM04
    |    `--R. simplicissima (Knight 1928) [=Amphissites simplicissimus] CB86
    |--Kirkbyidae HM04
    |    |--Coronakirkbya Sohn 1954 ZL87
    |    |    `--C. fimbriata Sohn 1954 ZL87
    |    |--Aurikirkbya Sohn 1950 HM04
    |    |    |--A. kellettae (Harlton 1929) [=Kirkbya kellettae, Knightina kellettae] HM04
    |    |    |--A. knighti (Harlton 1929) HM04
    |    |    `--A. triserata Shaver in Thompson et al. 1959 HM04
    |    `--Kirkbya Jones 1859 HM04
    |         |--K. bellula CB86
    |         |--K. bendensis Harlton 1933 HM04
    |         |--K. clarocarinata Knight 1928 ZL87
    |         |--K. fuldaensis Shaver & Smith 1974 HM04
    |         |--K. inornata Roth 1929 HM04
    |         |--K. lessnikovae Posner 1951 S82
    |         |--K. permiana (Kirkby 1858) [=Leperditia permiana] S82
    |         `--K. quadrata Robinson 1959 HM04
    `--Amphissitidae HM04
         |--Kegelites Coryell & Booth 1933 HM04
         |    |--K. dattonensis (Harlton 1927) [=Amphissites dattonensis] ZL87
         |    |--K. harltoni (Cooper 1946) [=Ectodemites harltoni] HM04
         |    `--K. wapanuckensis (Harlton 1929) HM04
         |--Shleesha Sohn 1961 HM04
         |    |--S. houae (Chen 1958) [=Amphissites houae] CB86
         |    |--S. pinguis (Ulrich & Bassler 1906) [=Kirkbya pinguis] HM04
         |    |--S. pinguoides (Croneis & Gale 1939) HM04
         |    |--S. simplex (Roth 1929) HM04
         |    `--S. sullivanensis (Payne 1937) HM04 [=Shleesha sullivanensis ZL87, Ectodemites sullivanensis ZL87]
         |--Amphissites Girty 1910 HM04
         |    |  i. s.: A. centronotus (Ulrich & Bassler 1906) ZL87 (see below for synonymy)
         |    |         A. robertsi Morey 1935 ZL87
         |    `--A. (Amphissites) HM04
         |         |--A. (A.) alticostatus Bradfield 1935 HM05
         |         |--A. (A.) insignis Croneis & Thurman 1939 HM04
         |         |--A. (A.) morrowanensis Hoare & Merrill 2004 HM04
         |         `--A. (A.) reticulatus Geis 1932 HM04
         `--Polytylites Cooper 1941 HM04
              |--P. biforatus (Croneis & Thurman 1939) HM04
              |--P. elongatus (Croneis & Bristol 1939) HM04
              |--P. geniculatus Cooper 1941 HM04
              |--P. nodobliquus (Croneis & Gale 1939) HM04
              |--P. nodosus (Roth 1929) HM04
              |--P. quincollinus (Harlton 1929) HM04
              |--P. subrectus Hoare & Merrill 2004 HM04
              |--P. superus (Croneis & Gale 1939) [=Amphissites superus] HM04
              `--P. trilobus (Croneis & Gale 1939) [=Amphissites trilobus] HM04

Amphissites centronotus (Ulrich & Bassler 1906) ZL87 [=Kirkbya centronota XL87; incl. A. blumenstengeli GrĂ¼ndel 1962 S82, A. mosquensis Posner 1951 S82]

*Type species of generic name indicated

REFERENCES

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.

[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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