Faxonius quadruncus

Faxonius quadruncus, the St. Francis River crayfish, is a species of crayfish in the family Cambaridae. It is endemic to Missouri.^[2] The common name refers to the St. Francis River where the first examples were found.^[3]

Faxonius quadruncus
Conservation status
Vulnerable  (IUCN 3.1)[1]
Critically Imperiled  (NatureServe)[2]
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
Family:	Cambaridae
Genus:	Faxonius
Species:	F. quadruncus
Binomial name
Faxonius quadruncus (Creaser, 1933)
Synonyms[1]
Orconectes quadruncus