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Idioglyptus
Taxonomy
Idioglyptus was named by Northrop (1939) [Sepkoski's age data: S Ludl D Gedi Sepkoski's reference number: 24,25].
It was reranked as Cymostrophia (Idioglyptus) by Amsden (1968).
It was assigned to Stropheodontinae by Northrop (1939); to Cymostrophia by Amsden (1968); to Strophomenoidea by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
It was reranked as Cymostrophia (Idioglyptus) by Amsden (1968).
It was assigned to Stropheodontinae by Northrop (1939); to Cymostrophia by Amsden (1968); to Strophomenoidea by Williams et al. (2000); and to Strophomenida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1939 | Idioglyptus Northrop pp. 172 - 173 |
| 1968 | Cymostrophia (Idioglyptus) Amsden p. 52 |
| 2000 | Idioglyptus Williams et al. p. 302 |
| 2002 | Idioglyptus 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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. A. Northrop 1939 | A genus apparently allied to Brachyprion and to Cymostrophia. As in the latter genus, the thin shell of Idioglyptus is thrown into numerous transverse rugae which are confined to the interspaces between the prominent costellae. The hinge line, as in Brachyprion, is denticulate or crenulate for one-third to half the distance from beak to cardinal extremities. |