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Eschrichtius akishimaensis
Taxonomy
Eschrichtius akishimaensis was named by Kimura et al. (2018). Its type specimen is GMNH-PV-3210, a partial skeleton (cranium, mandibles, cervical, thoracic, lumbar and caudal vertebrae, chevrons, ribs, scapulas, humeri, radii, ulnae, carpals, metacarpals and phalangeal bones), and it is a 3D body fossil. Its type locality is Akishima, which is in a Pleistocene marine horizon in the Komiya Formation of Japan.
Synonymy list
| Year | Name and author |
|---|---|
| 2018 | Eschrichtius akishimaensis Kimura et al. p. 2 figs. Figures 1–12, 15A, E, Table 1 |
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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.
†Eschrichtius akishimaensis Kimura et al. 2018
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| T. Kimura et al. 2018 | A species of the genus Eschrich- tius di ering from E. robustus by having dorsal surface of ascending process of premaxilla attened, dorsolaterally facing ascending process of maxilla that is not much narrower in comparison with that of premaxilla, posterior border of nasal squared o , deep and large squamosal concavity. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||
Age range: Early/Lower Pleistocene or 2.58800 to 0.78100 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Pleistocene | Japan (Tokyo) | Eschrichtius akishimaensis (type locality: 76022) |