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Mellarium
Taxonomy
Mellarium was named by Waterhouse (1960) [Sepkoski's age data: Tr Ladi Sepkoski's reference number: 157].
It was assigned to Pleurotomariidae by Waterhouse (1960); and to Archaeogastropoda by Sepkoski (2002).
It was assigned to Pleurotomariidae by Waterhouse (1960); and to Archaeogastropoda by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Mellarium Waterhouse pp. 271 - 272 |
| 2002 | Mellarium 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. †Mellarium Waterhouse 1960
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. B. Waterhouse 1960 | Cryptomphalous, medium-sized globular turbiniform pleurotomariids; slit placed above mid-height of the whorl, one fifth of the whorl circumference deep; selenizone narrow and convex, either smooth or ornamented with nodules; whorl periphery lies below selenizone, whorl profile subangular, and slightly concave above the slit, base flattened; whorls ornamented by strong revolving costae or nodules. |