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Oligorhynchia bifurcata
Taxonomy
Oligorhynchia bifurcata was named by Cooper (1956) [= Oligorhynchia sp. Butts, Virginia Geol. Surv. Bull. 52, pi. 87, figs. 18, 19, 1942
= Camerella ? conybearei Reed 1917, p. 925, pl. xxii, figs. 23, 24, non figs. 19-22.]. Its type specimen is USNM 117138a, a shell, and it is a 3D body fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 1956 | Oligorhynchia bifurcata Cooper pp. 659-660 figs. Plate 126, D, figures 13-24; plate 127, A, figures 1-8 |
| 1962 | Oligorhynchia bifurcata Williams pp. 239 - 240 figs. P1. XXIV, figs. 39, 40, 42-46 |
| 2014 | Oligorhynchia bifurcata Candela and Harper pp. Supplement 1 |
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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.
†Oligorhynchia bifurcata Cooper 1956
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Williams 1962 | Subtriangular, biconvex Oligorhynchia wider than long with the maximum width attained at about 4.5 mm. from the umbo of the pedicle valve, which is more than one-quarter as deep as long; shell ornamented by angular eostae, including a median one, commonly bifurcating anteriorly, and a lateral pair in the brachial valve and 2 strong complementary pairs in the pedicle valve, the inner pair arising at the umbo and commonly flanking a weak costa developed antero-medianly. |