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Vertipecten
Taxonomy
Pecten (Vertipecten) was named by Grant and Gale (1931).
It was reranked as Vertipecten by Addicott (1968), Adegoke (1969), Addicott (1974), Moore (1984), Smith (1991) and Sepkoski (2002).
It was assigned to Pectinidae by Addicott (1968), Adegoke (1969), Addicott (1974), Moore (1984) and Smith (1991); and to Pterioida by Sepkoski (2002).
It was reranked as Vertipecten by Addicott (1968), Adegoke (1969), Addicott (1974), Moore (1984), Smith (1991) and Sepkoski (2002).
It was assigned to Pectinidae by Addicott (1968), Adegoke (1969), Addicott (1974), Moore (1984) and Smith (1991); and to Pterioida by Sepkoski (2002).
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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.
G. †Vertipecten Grant and Gale 1931
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†Vertipecten alexclarki Addicott 1973
†Vertipecten bowersi Arnold 1906
†Vertipecten fucanus Dall 1898
†Vertipecten kernensis Hertlein 1925
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Invalid names: Vertipecten diabloensis Clark 1924 [synonym], Vertipecten nevadanus Conrad 1855 [synonym]
†Vertipecten lachenbruchi MacNeil 1967
†Vertipecten perrini Arnold 1906
†Vertipecten popofensis MacNeil 1967
†Vertipecten porterensis Weaver 1912
†Vertipecten yneziana Arnold 1907
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. T. Smith 1991 | Valves equal in height and length in most species, but height exceeds length in the youngest taxon. Profiles variable, from equally convex to planoconvex right valves and strongly convex left valves. Ribs or costae and interspaces numerous, of varying widths, with im- bricated or scaly fine sculpture in most taxa. Shagreen or screenlike microsculpture preserved in some species. Rib profiles vary with time (see table 5). Auricles equal, with scaly radial riblets. Byssal notch deep; hinge area smooth, lacking crura. |