Procarididea is an

infraorder Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and ...

decapods The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is es ...

, comprising only eleven species. Six of these are in the genera ''

Procaris ''Procaris'' is a genus of shrimp in the family Procarididae. It contains the following species: *''Procaris ascensionis ''Procaris ascensionis'' is a species of shrimp, known only from two saltwater pools on Ascension Island Ascension ...

'' and '' Vetericaris'', which together make up the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Procarididae. The remaining five species are only known from

fossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

s and belong to the genus '' Udora'', which cannot yet be assigned to any family. The

cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to ...

below shows Procarididea's relationships to other relatives within

Decapoda The Decapoda or decapods (literally "ten-footed") are an order of crustaceans within the class Malacostraca, including many familiar groups, such as crabs, lobsters, crayfish, shrimp and prawns. Most decapods are scavengers. The order is es ...

, from analysis by Wolfe ''et al.'', 2019.

References

Decapods Arthropod infraorders {{Decapoda-stub