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Hesperinia

Strophomenata - Strophomenida - Glyptomenidae

Taxonomy
Hesperinia was named by Cooper (1956) [Sepkoski's age data: O Llvi O Ashg Sepkoski's reference number: 1]. Its type is Hesperinia kirki.

It was assigned to Leptaenidae by Cooper (1956); to Glyptomeninae by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).

Synonymy list
YearName and author
1956Hesperinia Cooper p. 822
2000Hesperinia Williams et al. p. 252
2002Hesperinia Sepkoski, Jr.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Life
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
RankNameAuthor
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
classStrophomenataWilliams et al 1996
orderStrophomenidaOpik 1934
superfamilyStrophomenoideaKing 1846
familyGlyptomenidaeWilliams 1965
subfamilyGlyptomeninaeWilliams 1965
genusHesperinia

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
G. A. Cooper 1956Small, subrectangular shells with the hinge equal to or wider than the midwidth; piano- to slightly concavo-convex; surface multicostellate. Foramen not seen. Shell substance coarsely pseudopunctate.

Pedicle valve with long interarea, wide delthyrium covered by a pseudodeltidium. Teeth large; dental plates oblique, moderately long. Musculature not known.

Brachial interior with moderately strong and erect cardinal process consisting of 2 lobes and suggesting that of Leptaena. Brachiophores, flat blades, obliquely situated on each side of the cardinal process and supported by shell substance as in the Strophomenidae ; adductor field large ; subperipheral rim well developed and channeled by pallial trunks.