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Aetiocetus weltoni
Taxonomy
Aetiocetus weltoni was named by Barnes et al. (1995). Its type specimen is UCMP 122900, a partial skeleton, and it is a 3D body fossil. Its type locality is Ona Beach, which is in a Chattian deltaic horizon in the Yaquina Formation of Oregon. It is the type species of Aetiocetus.
Synonymy list
| Year | Name and author |
|---|---|
| 1995 | Aetiocetus weltoni Barnes et al. pp. 416-418 figs. Fig. 18 |
| 2008 | Aetiocetus weltoni Uhen et al. p. 611 |
| 2011 | Aetiocetus weltoni Marx p. 83 figs. Figure 2 |
| 2015 | Aetiocetus weltoni Marx and Fordyce figs. Figure 2 |
| 2015 | Aetiocetus weltoni Tsai and Ando figs. Figure 5 |
| 2016 | Aetiocetus weltoni Fordyce and Marx p. 114 figs. Fig. 4 |
| 2017 | Aetiocetus weltoni Tsai and Kohno |
| 2018 | Aetiocetus weltoni Fordyce and Marx p. 5 figs. Fig. 4 |
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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.
†Aetiocetus weltoni Barnes et al. 1995
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. G. Barnes et al. 1995 | A species of Aetiocetus differing from A. tomitai by having a cranium with a thicker postorbital process of frontal, zygomatic process of squamosal deeper dorsoventrally, temporal fossa more elongate in dorsal view, not round, external acoustic meatus not compressed anteroposteriorly between paroccipital and postglenoid processes, and by being larger in overall size; differing from A. cotylalveus by having a cranium with rostral bones extending posteriorly as far as the posterior border of supraorbital process of frontal, rather than only to mid-point of orbits, zygomatic process of squamosal thick and elongate; and differing from A. polydentatus, new species, by having cranium with nasals narrow, tapered, and flat, rather than wide anteriorly with broadly curved and up-turned anterior extremities, zygomatic process more thick and arched, notch between dorsal parts of occipital condyles wider, by having dentition less homodont, the posterior teeth being expanded anteroposteriorly by the presence of accessory cusps rather than slender and pointed, and by having a tooth count of 11/12, rather than 13-14/14-15. |