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Eocalyptraphorus binodiferus
Taxonomy
Calyptraphorus binodiferus was named by Perrilliat and Vega (1997). It is the type species of Eocalyptraphorus.
It was recombined as Eocalyptraphorus binodiferus by Bandel (2007).
It was recombined as Eocalyptraphorus binodiferus by Bandel (2007).
Synonymy list
| Year | Name and author |
|---|---|
| 1997 | Calyptraphorus binodiferus Perrilliat and Vega |
| 2001 | Calyptraphorus binodiferus Kiel and Perrilliat p. 410 figs. 1. 4-5, 2. 1-3 |
| 2007 | Eocalyptraphorus binodiferus Bandel p. 130 |
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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.
†Eocalyptraphorus binodiferus Perrilliat and Vega 1997
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. Kiel and M. d. C. Perrilliat 2001 | The conical protoconch has four convex whorls, embryonic part about 0.13 mm across, the larval shell is 2 mm high and 1.5 mm wide. The teleoconch is formed of six whorls with a decreasing number of ribs towards the later whorls. The last whorl shows no ornament except for two strong tubercles behind the aperture. A large grooved callus develops from the aperture up the spire and curves downwards just before reaching the apex, leaving two or three initial whorls free of callus; the grooved callus continues down the spire and ends on the last whorl just behind the two strong tubercles. A large lobe of callus develops on the abaxial side on the spire. The largest specimen is 30 mm high and 18 mm wide. |
Measurements
No measurements are available
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| Source: superf = superfamily, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: Early/Lower Maastrichtian or 72.20000 to 66.00000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Maastrichtian | Mexico (Guerrero) | Calyptraphorus binodiferus (7461) |