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Epitonium (Gyroscala)
Taxonomy
Gyroscala was named by de Boury (1887) [Sepkoski's age data: T Eo-m-u R Sepkoski's reference number: 700]. It is extant.
It was reranked as Epitonium (Gyroscala) by Durham (1937), Gardner (1948), Addicott (1970), Ladd (1972), Kensley and Pether (1986), Todd (2001); it was reranked as Cirsotrema (Gyroscala) by Pacaud and Le Renard (1995).
It was assigned to Cirsotrema by Pacaud and Le Renard (1995); to Epitonium by Durham (1937), Gardner (1948), Addicott (1970), Ladd (1972), Kensley and Pether (1986), Todd (2001); and to Neotaenioglossa by Sepkoski (2002).
It was reranked as Epitonium (Gyroscala) by Durham (1937), Gardner (1948), Addicott (1970), Ladd (1972), Kensley and Pether (1986), Todd (2001); it was reranked as Cirsotrema (Gyroscala) by Pacaud and Le Renard (1995).
It was assigned to Cirsotrema by Pacaud and Le Renard (1995); to Epitonium by Durham (1937), Gardner (1948), Addicott (1970), Ladd (1972), Kensley and Pether (1986), Todd (2001); and to Neotaenioglossa by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Epitonium charitopolos, Epitonium emydoneus, Epitonium expectatum, Epitonium foliaceicostatum, Epitonium foliaceicostum, Epitonium foliaceicostum, Epitonium foliaceicostum, Epitonium foliaceiscostatum, Epitonium gabbi, Epitonium groenlandica, Epitonium humphreysi, Epitonium imperiale, Epitonium krebsii, Epitonium leroyi, Epitonium multiliniferum, Epitonium muricatum, Epitonium novangliae, Epitonium paytens, Epitonium replicata, Epitonium rushii, Epitonium sculptatum, Epitonium sericifilum, Epitonium suboptima, Epitonium venezuelense
Synonymy list
| Year | Name and author |
|---|---|
| 1887 | Gyroscala de Boury p. 46 |
| 1937 | Epitonium (Gyroscala) Durham p. 485 |
| 1948 | Epitonium (Gyroscala) Gardner p. 208 |
| 1970 | Epitonium (Gyroscala) Addicott p. 55 |
| 1972 | Epitonium (Gyroscala) Ladd p. 51 |
| 1986 | Epitonium (Gyroscala) Kensley and Pether p. 169 |
| 1995 | Cirsotrema (Gyroscala) Pacaud and Le Renard |
| 2001 | Epitonium (Gyroscala) Todd |
| 2002 | Gyroscala 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.
Subg. Epitonium (Gyroscala) de Boury 1887
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†Cirsotrema (Gyroscala) stueri de Boury 1890
†Epitonium (Gyroscala) barkerianum Addicott 1970
†Epitonium (Gyroscala) effingeri Durham 1937
†Epitonium (Gyroscala) lycocephalum Kensley and Pether 1986
†Gyroscala punjabensis Eames 1952
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. W. Durham 1937 | Shell of medium size, rather thin; sutures moderately deep, whorls convex; ornamented by thin varices continuous from whorl to whorl; no spiral sculpture; basal disk present, limited by a peripheral keel; aperture ovate; inner lip very thin; auricle fairly prominent. Living in Caribbean and Oceanica. |