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Pteroscaphites
Taxonomy
Pteroscaphites was named by Wright (1953) [Sepkoski's age data: K Ceno-u K Sant-l Sepkoski's reference number: 1107].
It was assigned to Scaphitinae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
It was assigned to Scaphitinae by Wright et al. (1996); and to Ammonoidea by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Pteroscaphites Wright p. 474 |
| 1996 | Pteroscaphites Wright et al. p. 261 fig. 203,4a,b |
| 2002 | Pteroscaphites Sepkoski |
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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. †Pteroscaphites Wright 1953
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Wright et al. 1996 | Very small; whorl section depressed, coronate, the lateral angles prolonged onto body chamber; aperture with sides and ventral edge normally pinched to form projecting points; ribs prorsiradiate on inner flanks, turning back at the lateral angle. Dimorphic in fashion comparable to that of Scaphites and Clioscaphites and therefore not microconchs of those genera; probably a series of progenetic dwarf offshoots of successive species of Scaphites and Clioscaphites |