Alokistocaridae
Encyclopedia
Alokistocaridae is a family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 of extinct trilobites. Alokistocarids were particle feeders and left small furrows with are occasionally preserved.
Their remains are found worldwide.
A notable genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of Alokistocarid is Elrathia, one of the most common trilobites in the world.
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