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Taxonomy
Macrocallista cavachana was named by Hanna and Israelsky (1925). Its type specimen is CAS 1723, a shell, and it is a 3D body fossil. Its type locality is CAS Loc. 555, Payta, which is in an Eocene marine horizon in Peru.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1925 | Macrocallista cavachana Hanna and Israelsky figs. pl. 7, fig. 3 |
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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.
†Macrocallista cavachana Hanna and Israelsky 1925
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. D. Hanna and M. C. Israelsky 1925 | Shell small, ovate, very inequilateral ; beak situated about one-fourth the distance from the anterior end, incurved and prosogyrous; dorsal slopes steep, basal margin broadly rounded ; lunule flat, not deeply circumscribed ; escutcheon not well defined; sculpture consisting of fine, concentric striae only; hinge plate narrow, not well preserved in type. |
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004, Hendy et al. 2009 | |||||