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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Nihohae
Taxonomy
Nihohae was named by Coste et al. (2023).
It was assigned to Odontoceti by Coste et al. (2023); and to Waipatiidae by Robinson et al. (2024).
It was assigned to Odontoceti by Coste et al. (2023); and to Waipatiidae by Robinson et al. (2024).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2023 | Nihohae Coste et al. p. 2 |
| 2024 | Nihohae Robinson et al. p. 579 |
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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 | |
|---|---|---|
| A. Coste et al. 2023 | Nihohae matakoi is a longirostrine, heterodont, polydont odon- tocete with long, symmetrical, conical, procumbent anterior tusk-like teeth and denticulate cheek teeth. The attenuated rostrum is long at 66% of the condylobasal length (CBL) and dorsoventrally flattened. The premaxillae are long and comprise the anterior 22% of the rostrum. N. matakoi has large, distinct maxillary flanges, sub-rhomboid nasals and a wide mesorostral groove along the entire rostral length. Niho- hae matakoi differs from Waipatia [28] in having longer, straighter tusk-like teeth, a longer rostrum which is more dor- soventrally compressed, less asymmetry in the skull and less heterodont posterior cheek teeth. Nihohae matakoi differs from Otekaikea [10] with smaller tusk-like teeth, having no expan- sion of the premaxillary crest, a strong intertemporal constriction, and a lower vertex. Nihohae matakoi differs from Ediscetus [24] in having an antero-posteriorly longer vertex, a broader mesorostral groove with no significant con- striction, sub-rhomboid rather than triangular nasals, deeper premaxillary sac fossae, a semi-circular supraoccipital shield, absence of dorsally angled temporal crests, a stronger inter- temporal constriction, anterolaterally oriented zygomatic processes and squared postglenoid processes. The anterior margin of the nasals is aligned with the posterior half of the supraorbital process of the frontal (state 5 of Geisler and Sanders [29]) showing less telescoping than in Ediscetus, Otekaikea or Waipatia. |
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: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Duntroonian | New Zealand (South Island) | N. matakoi (230556) |