Basic info | Taxonomic history | Classification | Included Taxa |
Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Awamokoa was named by Tanaka and Fordyce (2016).
It was assigned to Platanistoidea by Tanaka and Fordyce (2016); and to Waipatiidae by Berta (2017) and Robinson et al. (2024).
It was assigned to Platanistoidea by Tanaka and Fordyce (2016); and to Waipatiidae by Berta (2017) and Robinson et al. (2024).
Species
Synonymy list
Year | Name and author |
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2016 | Awamokoa Tanaka and Fordyce |
2017 | Awamokoa Berta p. 160 |
2024 | Awamokoa 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 | |
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Y. Tanaka and R. E. Fordyce 2016 | Heterodont odontocete with tooth sizes com- parable with those of Waipatia maerewhenua. Similar to Waipatia maerewhenua in the robust anterior process of the periotic with a rounded anterior end, teardrop-shaped internal acoustic meatus of the periotic and broad poste- rior process of the periotic. Awamokoa tokarahi has one autapomorphy amongst the Platanistoidea sensu stricto: a dorsoventrally higher postglenoid process relative to the post-tympanic process (character 116; homoplastic with the state in some other Odontoceti). The teardrop-shaped fenestra rotunda (character 174) is seen elsewhere among Platanistoidea sensu stricto only in Otekaikea huata. Dif- fers from Waipatia in: apex of postglenoid process dor- sally higher than the post-tympanic process; a teardrop- shaped fenestra rotunda with a fissure directed towards the aperture for cochlear aqueduct; a dorsoventrally thin zygomatic process; an anteromedially oriented anterior surface of the postglenoid process of the squamosal; two prominent dorsal crests on the periotic; an outstandingly large aperture for the vestibular aqueduct (3.7 mm); and strongly expanded anterior part of the tympanic cavity of the bulla. Differs from Otekaikea in having: a more robust anterior process of the periotic; broader posterior process of the periotic; weaker curve of the parabullary sulcus of the periotic; more rounded sigmoidal process of the bulla. Differs from Squalodontidae in having a dorsoventrally thick anterior process of the periotic; and larger mallear fossa and lateral tuberosity of the periotic. |
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 |
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Duntroonian | New Zealand (South Island) | A. tokarahi (180850) |