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Euactaeonina
Taxonomy
Euactaeonina was named by Wenz (1947) [Sepkoski's age data: J l K Sn]. It is not extant.
It was assigned to Cephalaspida by Sepkoski (2002); and to Acteonoidea by Gründel and Nützel (2012).
It was assigned to Cephalaspida by Sepkoski (2002); and to Acteonoidea by Gründel and Nützel (2012).
Synonymy list
| Year | Name and author |
|---|---|
| 1947 | Euactaeonina Wenz |
| 2002 | Euactaeonina Sepkoski |
| 2012 | Euactaeonina Gründel and Nützel pp. 45 - 46 |
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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. †Euactaeonina Wenz 1947
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Gründel and A. Nützel 2012 | The shell is very large and slender. The teleoconch whorls have a ramp which is not demarcated by a spiral furrow. The whorls are smooth. They embrace well below the ramp. The aperture is very high and narrow, only somewhat broadened abapically. It lacks columellar folds. The outer lip is convex. The protoconch is unknown. |