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Orbiculoidea stincharensis

Lingulata - Lingulida - Disciniidae

Taxonomy
Orbiculoidea stincharensis was named by Reed (1917) [= Discina perrugata (M'Coy), Davidson 1883, Mon. Brit. Foss. Brach., vol. v, Silur. Suppl., pp. 210, 224, pi. xvii, fig. 47.].

Synonymy list
YearName and author
1917Orbiculoidea stincharensis Reed
1962Orbiculoidea stincharensis Williams pp. 95 - 96 figs. Pl. VII, figs. 31-33
1977Orbiculoidea stincharensis Mitchell
2014Orbiculoidea stincharensis Candela and Harper pp. Supplement 1

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RankNameAuthor
kingdomAnimalia()
Triploblastica
Eutriploblastica
Neotriploblastica
Eucoelomata
superphylumLophotrochozoa
Lophophorata
phylumBrachiopodaCuvier 1805
RankNameAuthor
subphylumLinguliformeaWilliams et al. 1996
classLingulataGorjansky and Popov 1985
orderLingulidaWaagen 1885
superfamilyDiscinoidea(Gray 1840)
familyDisciniidae(Gray 1840)
genusOrbiculoidead'Orbigny 1847
speciesstincharensis

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
A. Williams 1962Elongately oval Orbiculoidea; pedicle valve with a subcentral apex and a pedicle tube about 2 mm. long; brachial valve, almost nine-tenths as wide as long, flattening peripherally beyond the 7-mm. growth-stage, but initially obtusely conical with the apex just over one-third the length of the valve from the posterior margin; ornamentation consisting of fine, raised, concentric ridges separated by flat, wide interspaces and numbering 5 or 6 per millimetre within 3.5 ram. of the umbo.