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Nanocetorhinus
Taxonomy
Nanocetorhinus was named by Underwood and Schlogl (2013). Its type is Nanocetorhinus tuberculatus.
It was assigned to Neoselachii by Underwood and Schlogl (2013).
It was assigned to Neoselachii by Underwood and Schlogl (2013).
Species
N. tuberculatus (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2013 | Nanocetorhinus Underwood and Schlogl p. 502 |
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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. †Nanocetorhinus Underwood and Schlogl 2013
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†Nanocetorhinus tuberculatus Underwood and Schlogl 2013
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. J. Underwood and J. Schlogl 2013 | Teeth minute, rarely exceeding 1 mm high,
with a single cusp overlying an irregular to bilobed root. Weak heterodonty other than compressed symphyseal teeth. Cusp slender, over three time as long as wide, straight or faintly curved. Cusp faces strongly convex with very well developed cutting edge bearing weak and very irregular serrations. Labial face of cusp with well developed granulae or irregular granulate ridges. Flared collar at base of cusp with fine pitted ornament. Root rather irregular with two lobes present to a greater or lesser degree. Basal face of root with irregular foramina or often incompletely closed over re− sulting in single very large basal foramen. |