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Protanastrophia repanda

Rhynchonellata - Pentamerida - Parastrophinidae

Taxonomy
Protanastrophia repanda was named by Jin and Popov (2008). Its type specimen is ROM 57734 and is a 3D body fossil. Its type locality is AK2c, shoreline outcrop on the north side of Akimiski Island, which is in a Telychian reef, buildup or bioherm limestone in the Attawapiskat Formation of Canada. It is the type species of Protanastrophia.

Synonymy list
YearName and author
2008Protanastrophia repanda Jin and Popov pp. 224 - 225 fig. 1–3

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumRhynchonelliformeaWilliams et al. 1996
classRhynchonellataWilliams et al. 1996
orderPentameridaSchuchert and Cooper 1931
suborderSyntrophiidinaUlrich and Cooper 1936
superfamilyCamerelloideaHall and Clarke 1894
familyParastrophinidaeUlrich and Cooper 1938
genusProtanastrophia
speciesrepanda

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. Jin and L. E. Popov 2008Shell small, transversely elliptical to subpentagonal, dorsibiconvex, smooth posteriorly, weakly costate anteromedially; dorsal valve notably larger, deeper, with higher and more prominent umbo than ventral valve. Anterior commissure uniplicate, variably asymmetrical or sigmoidal. Ventral sulcus and dorsal fold developed anteriorly, broad and variously asymmetrical. Ventral median septum short, very low; inner hinge plates high, discrete, subparallel to each other; alate plates well developed.