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Taxonomy
Elliptoglossa rotundata was named by Cooper (1956). Its type specimen is USNM 71885a, a shell, and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
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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.
†Elliptoglossa rotundata Cooper 1956
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. A. Cooper 1956 | This species may be distinguished from E. ovalis by its proportionately rounder anterior and posterior margins, more rounded sides, and stronger concentric undulations. The same features distinguish it from E. sylvanica although with the latter species the differences are not so striking. | |
| A. Williams 1962 | Elongately oval, unequally and gently biconvex, bluish cream-coloured Elliptoglossa with a rounded anterior margin; pedicle valve almost plane, slightly less than three-quarters as wide as long, brachial valve gently but evenly convex in lateral and transverse profiles, ornamentation consisting of fine, irregularly disposed growth-lamellae and strong, concentric undulations; ventral interior with pedicle groove impressed on the flattened peripheral brim and a strong, low, median ridge over half as long as the valve, flanked by elongate impressions of the muscle-field. |