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Quadrithyris vijaicus

Rhynchonellata - Spiriferida - Xenomartiniidae

Taxonomy
Spirifer (Delthyris) vijaicus was named by Khodalevich (1951). It is a 3D body fossil.

It was recombined as Quadrithyris vijaicus by Johnson (1970) and Johnson (1971).

Synonymy list
YearName and author
1951Spirifer (Delthyris) vijaicus Khodalevich p. 95 figs. Pl. 28, figs. 5a-e
1970Quadrithyris vijaicus Johnson p. 262 figs. Plate 53, figs. 31-36
1971Quadrithyris vijaicus Johnson p. 319 figs. P1. 42, figs. 26-30

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
subphylumRhynchonelliformeaWilliams et al. 1996
RankNameAuthor
classRhynchonellataWilliams et al. 1996
orderSpiriferida
suborderDelthyridinaIvanova 1972
superfamilyReticularioidea
familyXenomartiniidaeHavlicek 1971
subfamilyQuadrithyridinaeGourvennec 1994
genusQuadrithyrisHavlicek 1957
speciesvijaicus(Khodalevich 1951)

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 1970Biconvex, smooth or plicate shells with nonconvergent dental lamellae and a long median septum in the pedicle valve; crural plates lacking.