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Tokarahia
Taxonomy
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2015 | Tokarahia Boessenecker and Fordyce |
| 2016 | Tokarahia Marx et al. p. 107 |
| 2017 | Tokarahia Berta p. 167 |
| 2017 | Tokarahia Boessenecker and Fordyce |
| 2017 | Tokarahia Tsai and Kohno |
| 2018 | Tokarahia Fordyce and Marx p. 5 figs. Fig. 4 |
| 2024 | Tokarahia Robinson et al. p. 577 |
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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. †Tokarahia Boessenecker and Fordyce 2015
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†Tokarahia kauaeroa Boessenecker and Fordyce 2015
†Tokarahia lophocephalus Marples 1956
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. W. Boessenecker and R. E. Fordyce 2015 | A large eomysticetid differing from all other eomysticetids in possessing elongate, dorsoventrally ta- pering zygomatic processes that are medially bowed, with a concave lateral margin, an elongate diamond- shaped posterior bullar facet lacking longitudinal stria- tions, and a transverse crest on the dorsal surface of the periotic, between the posterodorsal angle and the posterior internal acoustic meatus. With the excep- tion of Tohoraata raekohao, Tokarahia differs from all other eomysticetids in exhibiting numerous foramina in the supraorbital process of the frontal, an oval- shaped incisural flange closely appressed to the anteroventral part of the pars cochlearis, a promi- nent dorsal tubercle between the stylomastoid fossa and apertures for the cochlear and vestibular aque- ducts, a triangular anterior process in medial view with a posteriorly placed anterodorsal angle, a concave anterodorsal margin between the anteroventral and anterodorsal angles, an internal acoustic meatus that is anteriorly transversely pinched, a posterodorsal angle that is more acute and approximately 90° or smaller, and lacking a posterior bullar facet that is ‘folded’ into two facets by a hingeline, and additionally lacking lon- gitudinal striations on the posterior bullar facet. Tokarahia differs from Tohoraata in exhibiting medial
and lateral lobes of the tympanic bulla of equivalent width, possessing a transversely narrower tympanic bulla, a longer posterior process of the periotic and shorter anterior process, and a more deeply excavated suprameatal fossa. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||
Age range: Duntroonian or 27.30000 to 25.20000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Duntroonian | New Zealand | T. sp. (91675) | |
| Duntroonian | New Zealand (North Otago) | Mauicetus lophocephalus (63049) T. sp., T. kauaeroa (45660) | |
| Late/Upper Oligocene | New Zealand (South Island) | T. lophocephalus (173285) |