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Atrypina simpsoni

Rhynchonellata - Atrypida - Atrypinidae

Taxonomy
Atrypina simpsoni was named by Johnson (1970). Its type specimen is USNM 157073, a valve, and it is a 3D body fossil. Its type locality is USNM 10758. Big ledge, east flank and near mouth of Coal Canyon, which is in a Siegen carbonate limestone in the Windmill Limestone Formation of Nevada.

Synonymy list
YearName and author
1970Atrypina simpsoni Johnson pp. 159 - 160 figs. Pl. 43, figs. 5-16

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
RankNameAuthor
classRhynchonellataWilliams et al. 1996
orderAtrypidaRzhonsnitskaya 1960
suborderAtrypidinaMoore 1952
superfamilyAtrypoideaGill 1871
familyAtrypinidaeMcEwan 1939
subfamilyAtrypininaeMcEwan 1939
genusAtrypinaHall and Clarke 1893
speciessimpsoni

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Diagnosis
ReferenceDiagnosis
J. G. Johnson 1970Small pentagonal Atrypina with a nearly straight hinge line and lacking a median rib on the fold of the pedicle valve.