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Epitonium (Gyroscala) effingeri
Taxonomy
Epitonium (Gyroscala) effingeri was named by Durham (1937). Its type specimen is UCMP 30146 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
Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Epitonium (Gyroscala) effingeri Durham p. 485 figs. Plate 56, figure 25 |
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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 (Gyroscala) effingeri Durham 1937
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1937 | Shell small, thin, slightly corroded, four convex whorls (incomplete); sutures broad, moderately deep; ornamented by 10 thin, knife-like varices continuous over all whorls; no extra callus deposited over base of preceding whorl at suture; basal keel slightly visible; no spiral sculpture apparent except for well-marked basal keel over which varices continue to aperture; aperture ovate. |