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Erato cooperi
Taxonomy
Erato cooperi was named by Fehse and Landau (2002). Its type specimen is HNC 53514, a shell, and it is a 3D body fossil. Its type locality is Ferme la Presseliere, Sceaux d'Anjou, Maine-et-Loire, which is in a Messinian coastal sandstone in the Lower Redonien Formation of France.
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Erato cooperi Fehse and Landau pp. 95 - 97 figs. 18, 23, 24, 31, 33/3 |
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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.
†Erato cooperi Fehse and Landau 2002
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Fehse and B. Landau 2002 | Shell small, solid, inflated, pyriform with a very short, rounded spire. Protoconch consisting of 2- 2Y2 depressed whorls with a very small nucleus. Junction with teleoconch clearly defined. The first teleoconch whorl is narrowed at the junction with the protoconch. Teleoconch consisting of 3 short whorls, mostly covered by callus, suture obscured by callus. Body whorl 90-95% of total height, inflated to greatly inflated, shouldered adapically, with the maximum diameter Y4 distance from the adapical suture, convex below and relatively constricted at the base. Dorsum smooth, rounded, without any dorsal sulcus, not constricted abapically. Body whorl completely covered by a thin, glossy callus in well-preserved specimens, which envelops the spire. Aperture comprising 85-90% of total height, narrow and straight. Outer lip thickened, smooth, with the outer margin evenly rounded, bearing 11-15 denticles, which in most specimens extend onto the lip. Siphonal canal short, rounded and straight. Columella rounded in the abapical portion, straight below, smooth, bordered internally by a weak carinal ridge.
The outer border usually bearing a row of 2-5 denticles, restricted to the anterior end, which become stronger abapically. Fossula marked by a weak concavity. Terminal ridge strongly developed, bifid but not bifurcate. |