''Polytylites'' is an

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

ostracod Ostracods, or ostracodes, are a Class (biology), class of the crustacean, Crustacea (class Ostracoda), sometimes known as seed shrimp. Some 33,000 species (only 13,000 of which are extant taxon, extant) have been identified,Brandão, S.N.; Antoni ...

(seed shrimp) belonging to the order

Palaeocopida Palaeocopida is an order of ostracods in the subclass Podocopa. Most species in the suborder are extinct, and only the genera '' Manawa'', '' Promanawa'', and '' Puncia'' in the family Punciidae are extant. The members of the family live in high ...

and family Amphissitidae. Specimens have been found in beds of

Carboniferous The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the ...

Permian The Permian ( ) is a geologic period and System (stratigraphy), stratigraphic system which spans 47 million years, from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 251.902 Mya. It is the s ...

age in North America and Asia.

Species

*'' Polytylites ambitus'' Cooper 1941 *'' Polytylites concavus'' Croneis and Bristol *'' Polytylites crassus'' Cooper 1941 *'' Polytylites directus'' Cooper 1941 *''

Polytylites diversus ''Polytylites'' is an extinct genus of ostracod (seed shrimp) belonging to the order Palaeocopida and family Amphissitidae. Specimens have been found in beds of Carboniferous to Permian age in North America and Asia. Species *''Polytylites amb ...

'' Cooper 1941 *'' Polytylites grovei'' Croneis and Gutke *'' Polytylites kitanipponica'' Ishizaki 1964 *'' Polytylites oblongus'' Hoare and Mapes 2000 *'' Polytylites reticulatus'' Cooper 1941 *'' Polytylites similis'' Croneis and Gale *'' Polytylites simplex'' Hou 1954 *'' Polytylites sublineatus'' Croneis and Thurman *'' Polytylites tricollinus'' Jones and Kirkby *'' Polytylites trilobus'' Croneis and Gale

References

Paleozoic life Ostracods Prehistoric ostracod genera {{Ostracod-stub