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Tohoraata waitakiensis
Taxonomy
Mauicetus waitakiensis was named by Marples (1956) [old holotype number UO G.47.2]. Its type specimen is OMC GL 402, a partial skull (incomplete occipital, left and right tympanic bullae, atlas, axis and three cervical vertebrae), and it is a 3D body fossil. Its type locality is Duntroon (Kokoamu Greensand), which is in a Duntroonian offshore shelf limestone in the Kokoamu Greensand Formation of New Zealand.
It was considered an invalid subgroup of Mauicetus by Fordyce (1991); it was considered an invalid subgroup of Eomysticetoidea by Steeman (2007); it was considered an invalid subgroup of Eomysticetidae by Fordyce and Roberts (2009); it was recombined as Tohoraata waitakiensis by Boessenecker and Fordyce (2015), Boessenecker and Fordyce (2017), Tsai and Kohno (2017).
It was considered an invalid subgroup of Mauicetus by Fordyce (1991); it was considered an invalid subgroup of Eomysticetoidea by Steeman (2007); it was considered an invalid subgroup of Eomysticetidae by Fordyce and Roberts (2009); it was recombined as Tohoraata waitakiensis by Boessenecker and Fordyce (2015), Boessenecker and Fordyce (2017), Tsai and Kohno (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1956 | Mauicetus waitakiensis Marples p. 578 figs. Figure 3 |
| 1967 | Mauicetus waitakiensis Harland et al. p. 774 |
| 1973 | Mauicetus waitakiensis Keyes p. 390 |
| 1980 | Mauicetus waitakiensis Fordyce p. iii figs. Table 2 |
| 2015 | Tohoraata waitakiensis Boessenecker and Fordyce |
| 2017 | Tohoraata waitakiensis Boessenecker and Fordyce |
| 2017 | Tohoraata waitakiensis Tsai and Kohno |
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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.
†Tohoraata waitakiensis Marples 1956
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. W. Boessenecker and R. E. Fordyce 2015 | A small mysticete similar in size to but separated from T. raekohao in the following features: foramen magnum circular, tympanic bullae slightly ante- roposteriorly shorter and relatively wider with more strongly convex ventral surface, conical process of bulla dorsoventrally much thinner and plate-like. Tohoraata waitakiensis differs from all other mysticetes in possessing a flattened ventral margin of the atlas. |
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 (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Duntroonian | New Zealand (North Otago) | Mauicetus waitakiensis (45660 type locality: 63049) |