Polytylites

Left valve of Polytylites superus, from Hoare & Merrill (2004).

Belongs within: Kirkbyoidea.

Polytylites is a genus of ostracods known from the Carboniferous and early Permian of Eurasia and North America, characterised by a carapace with well-developed terminal nodes and without carinae flanking the median node (Benson et al. 1961).

<==Polytylites Cooper 1941 HM04
    |--*P. geniculatus Cooper 1941 BB61
    |--P. biforatus (Croneis & Thurman 1939) HM04
    |--P. digitatus BB61
    |--P. elongatus (Croneis & Bristol 1939) 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

*Type species of generic name indicated

REFERENCES

[BB61] Benson, R. H., J. M. Berdan, W. A. van den Bold, T. Hanai, I. Hessland, H. V. Howe, R. V. Kesling, S. A. Levinson, R. A. Reyment, R. C. Moore, H. W. Scott, R. H. Shaver, I. G. Sohn, L. E. Stover, F. M. Swain & P. C. Sylvester-Bradley. 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.

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