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Cephalerpeton
Taxonomy
Cephalerpeton was named by Moodie (1912). It is not extant. Its type is Cephalerpeton ventriarmatum.
It was assigned to Amphibamidae by Moodie (1912), Moodie (1916); to Pariotichidae by Kuhn (1966); to Romeriidae by Carroll and Baird (1972); and to Protorothyrididae by Carroll (1988), Haubold et al. (2005).
It was assigned to Amphibamidae by Moodie (1912), Moodie (1916); to Pariotichidae by Kuhn (1966); to Romeriidae by Carroll and Baird (1972); and to Protorothyrididae by Carroll (1988), Haubold et al. (2005).
Species
C. ventriarmatum (type species)
Entered
by W. Clyde on 2003-01-23; modified by T. Liebrecht on 2013-10-27
Synonymy list
| Year | Name and author |
|---|---|
| 1912 | Cephalerpeton Moodie pp. 326, 349 |
| 1916 | Cephalerpeton Moodie pp. 47, 132 |
| 1966 | Cephalerpeton Kuhn p. 14 |
| 1972 | Cephalerpeton Carroll and Baird p. 322 |
| 1988 | Cephalerpeton Carroll |
| 2005 | Cephalerpeton Haubold et al. p. 78 |
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Carroll and D. Baird 1972 | Romeriid captorhinomorph, known at present from a single, incomplete, immature specimen. Teeth of upper jaw much larger and fewer in number than in other romeriids. Sixteen teeth in maxilla, four “pre-canines,” two “canines,” and ten “cheek” teeth. Size of cheek teeth variable, with some larger than canines. Approximately 24 teeth in dentary, which are smaller than those in maxilla and alternate with them in length. Large teeth show labyrinthine plication of enamel. Palatal bones covered with shagreen of denticles. Longer denticles arranged in three rows radiating from basicranial articulation. Number of presacral vertebrae not established, 28 estimated. Tall neural spines, rectangular in outline. Neural arches suturally attached to centra. Intercentra large crescents, which may have been continued in cartilage to form complete rings. Scapulocoracoid ossified in three units. Humerus equal in length to five trunk vertebrae. Neither supinator process nor ectepicondylar ridge ossified. Ulna and radius two-thirds the length of the humerus. |
Measurements
No measurements are available
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| Source: c = class, subp = subphylum, p = phylum, uc = unranked clade | |||||
| References: Hendy et al. 2009, Kiessling 2004, Bambach et al. 2007, Carroll 1988 | |||||
Age range: Westphalian D or 309.80000 to 307.40000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Westphalian D | USA (Illinois) | C. ventriarmatum (79598) |