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Virgiana decussata

Rhynchonellata - Pentamerida - Virgianidae

Taxonomy
Pentamerus decussatus was named by Whiteaves (1891) [4 syntypes]. Its type specimen is GSC 8997 and is a 3D body fossil.

It was recombined as Conchidium decussatum by Hall and Clarke (1892); it was recombined as Virgiana decussata by Savage (1918), Jin and Copper (2000) and Jin et al. (2006).

Synonymy list
YearName and author
1891Pentamerus decussatus Whiteaves p. 295 figs. Pl. 3, figs. 3, 4
1892Conchidium decussatum Hall and Clarke p. 235 figs. Pl. 65, figs. 1, 2, Pl. 66, fig. 15.
1918Virgiana decussata Savage pp. 334-336
2000Virgiana decussata Jin and Copper pp. 24 - 26 figs. Plate 1, figures 1-9; Plate 2, figures 1-9; Plate 3, figures 1-9; Figure 10
2006Virgiana decussata Jin et al.

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
RankNameAuthor
classRhynchonellataWilliams et al. 1996
orderPentameridaSchuchert and Cooper 1931
suborderPentameridinaSchuchert and Cooper 1931
superfamilyPentameroideaMcCoy 1844
familyVirgianidaeBoucot and Amsden 1963
subfamilyVirgianinaeBoucot and Amsden 1963
genusVirgianaTwenhofel 1914
speciesdecussata(Whiteaves 1891)

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 P. Copper 2000Shell large, elongate, strongly biconvex, with pedicle valve about twice as deep as brachial valve. Hingeline short, curved. Anterior commissure gently sulcate.