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Crossotrema
Taxonomy
Crossotrema was named by Cleevely (1980) [Sepkoski's age data: K Camp-u Sepkoski's reference number: 1211].
It was assigned to Epitoniidae by Cleevely (1980); and to Neotaenioglossa by Sepkoski (2002).
It was assigned to Epitoniidae by Cleevely (1980); and to Neotaenioglossa by Sepkoski (2002).
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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. †Crossotrema Cleevely 1980
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. J. Cleevely 1980 | Moderately large, elongate turreted shell with strongly convex, firmly joined whorls. Elaborate axial and spiral sculpture, of equal significance, consisting of crenulate frilled opisthocyrt collabral lamellae and primary and secondary spiral cords. Lamellae alternate on adjacent whorls, obscuring the impressed suture. Whorls lacking varices; imperforate. |