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Epitonium (Sthenorytis) crescentense
Taxonomy
Epitonium (Sthenorytis) crescentense was named by Durham (1937). Its type specimen is UCMP 30164 and is a 3D body fossil.
Sister species lacking formal opinion data
E. expectatum, E. foliaceicostum, E. humphreysi, E. imperiale, E. leroyi, E. multiliniferum, E. muricatum, E. sculptatum, E. paytens, E. gabbi, E. novangliae, E. rushii, E. sericifilum, E. venezuelense, E. emydoneus, E. groenlandica, E. suboptima, E. charitopolos, E. foliaceicostatum, E. foliaceicostum, E. foliaceicostum, E. foliaceiscostatum, E. krebsii, E. replicata, Sthenorytis hertelini, Sthenorytis pseudoretusa
Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Epitonium (Sthenorytis) crescentense Durham p. 500 figs. Plate 56, figures 11, 15 |
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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.
†Epitonium (Sthenorytis) crescentense Durham 1937
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1937 | Type incomplete, large, and moderately heavy; paratype smaller, more complete, in a poorer state of preservation; apparently about five rapidly enlarging well-rounded whorls; sutures deep; ornamented by six varices of irregular width, some broad, flat and heavy, others relatively narrow and rounded, having a tendency to be re- flexed posteriorly; at suture the varices overlap onto those of preceding whorl or merely onto the preceding whorl; on body whorl of the paratype there is a faint basal keel marked by a spiral rib; no other spiral ornamentation present; aperture apparently nearly circular on the paratype. |