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Coronodon newtonorum
Taxonomy
Coronodon newtonorum was named by Boessenecker et al. (2023) [LSID urn:lsid:zoobank.org:act:987DE600-70D1-426B- 9F6E-4FE477E3387D]. Its type specimen is ChM PV 2778, a partial skeleton (nearly the entire left side of a cranium, three (incisor, p1, and M1), periotic, bulla, nearly complete left mandible, three vertebrae, and one rib), and it is a 3D body fossil. Its type locality is North Charleston, Chandler Bridge Fm., Bed 3, which is in a Chattian marine sandstone in the Chandler Bridge Formation of South Carolina.
Synonymy list
| Year | Name and author |
|---|---|
| 2023 | Coronodon newtonorum Boessenecker et al. p. 71 |
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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.
†Coronodon newtonorum Boessenecker et al. 2023
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. W. Boessenecker et al. 2023 | Coronodon newtonorum n. sp. is a large species of toothed mysticete (estimated
BZW = 40 cm, estimated CBL = 80–90 cm). Coronodon newtonorum n. sp. differs from Coronodon havensteini in possessing a concave-up profile of the alveolar margin of the mandible and maxilla, a smaller P2 with lower accessory cusps, shorter roots, and a shorter crown (70% lower relative to anteroposterior crown length), and absence of maxillary embrasure pits posterior to P2; from both Coronodon havensteini and Coronodon planifrons n. sp. in possessing a ventrally convex ventral margin of the mandible, a mandibular condyle elevated far above the m4 alveolus, and possessing a more dorsoventrally inflated preorbital process of the frontal that is deeper than the postorbital process, possessing a gracile periotic with transversely narrow anterior process, short posterior process, a less inflated lateral surface of the body and a lateral tuberosity that is much longer and laterally prominent in medial view, possessing periotic with proportionally larger spiral cribriform tract and crista transversa recessed shallowly within internal acoustic meatus; from Coronodon planifrons n. sp. in having a ventrolaterally sloping supraorbital process of the frontal, possessing periotic with transversely narrow fissure-like endocranial opening of facial canal (shared with C. havensteini), and suprameatal fossa developed as a narrow trough along its entire length. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||