''Cycleryon'' is an extinct

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

decapod Decapod may refer to: Biology * Decapoda, an order of crustaceans such as lobsters and crabs * Decapodiformes, ten-limbed cephalopods with eight arms and two tentacles Trains * 2-10-0, a steam locomotive wheel arrangement known as "Decapod" in th ...

crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean gro ...

s. The type species is ''Cycleryon propinquus''.Decapoda: Eryonoidea
/ref> These epifaunal carnivores lived during the

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...

Germany Germany, officially the Federal Republic of Germany (FRG),, is a country in Central Europe. It is the most populous member state of the European Union. Germany lies between the Baltic and North Sea to the north and the Alps to the sou ...

and

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...

, from 164.7 to 161.2 Ma.Sepkoski, Jac
Sepkoski's Online Genus Database - Malacostraca
/ref>

Species

* ''Cycleryon elongatus'' Munster 1839 * ''Cycleryon orbiculatus'' Munster 1839 * ''Cycleryon propinquus'' Schlotheim 1822 * ''Cycleryon wulfi'' Garassino and Schweigert 2004

References

Polychelida Jurassic crustaceans Fossils of Germany Fossils of France Fossil taxa described in 1965 {{paleo-crustacean-stub