Spiriferina
Spiriferina is an extinct genus of brachiopods that lived in the Early Jurassic. Its representatives have been reported from Europe, North Africa, Saudi Arabia, and Alaska.
The genus used to be treated more widely, so earlier reports were from the Late Silurian to the Middle Jurassic in Asia, Europe, North America, South America, and New Zealand.
Species
The following species have been described within the genus:Spiriferina abichiSpiriferina aliaSpiriferina betacalcisSpiriferina borealisSpiriferina cassianaSpiriferina coreyiSpiriferina elegantissimaSpiriferina fortisSpiriferina homfrayiSpiriferina kiparisovaeSpiriferina munsteriiSpiriferina nicklesiSpiriferina panderiSpiriferina papillosaSpiriferina rostrataSpiriferina roundyiSpiriferina rupicolaSpiriferina salomonensisSpiriferina slovenicaSpiriferina subfragilisSpiriferina terebratuloidesSpiriferina terzadicaSpiriferina tornataSpiriferina toulaiSpiriferina triplicataSpiriferina walcottiSpiriferina yukonensisHowever, some of the above-listed species have been transferred to other genera since the original description, for example S. alpina and S. rostrata to the genus Liospiriferina.