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Idiophyseter
Taxonomy
Idiophyseter was named by Kellogg (1925) [Sepkoski's age data: T Mi-m]. Its type is Idiophyseter merriami. It was considered monophyletic by Uhen et al. (2008).
It was assigned to Cetacea by Sepkoski (2002); to Physeterinae by Simpson (1945), McKenna and Bell (1997), Fordyce and de Muizon (2001), Kazár (2002), Lambert et al. (2008); to Physeteridae by Kellogg (1925), Kellogg (1928), Hay (1930), Barnes (1977), Carroll (1988), Uhen et al. (2008), Marx et al. (2016), Collareta et al. (2017); and to Panphyseteroidea by Berta (2017).
It was assigned to Cetacea by Sepkoski (2002); to Physeterinae by Simpson (1945), McKenna and Bell (1997), Fordyce and de Muizon (2001), Kazár (2002), Lambert et al. (2008); to Physeteridae by Kellogg (1925), Kellogg (1928), Hay (1930), Barnes (1977), Carroll (1988), Uhen et al. (2008), Marx et al. (2016), Collareta et al. (2017); and to Panphyseteroidea by Berta (2017).
Species
I. merriami (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1925 | Idiophyseter Kellogg p. 18 |
| 1928 | Idiophyseter Kellogg p. 34 figs. Table 1 |
| 1930 | Idiophyseter Hay p. 597 |
| 1945 | Idiophyseter Simpson p. 102 |
| 1977 | Idiophyseter Barnes p. 327 |
| 1988 | Idiophyseter Carroll |
| 1997 | Idiophyseter McKenna and Bell p. 380 |
| 2001 | Idiophyseter Fordyce and de Muizon p. 179 |
| 2002 | Idiophyseter Kazár p. 163 |
| 2002 | Idiophyseter Sepkoski |
| 2008 | Idiophyseter Lambert et al. p. 367 figs. Fig. 3 |
| 2008 | Idiophyseter Uhen et al. p. 576 |
| 2016 | Idiophyseter Marx et al. p. 124 |
| 2017 | Idiophyseter Berta p. 160 |
| 2017 | Idiophyseter Collareta et al. p. 269 figs. Figure 6 |
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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 | |
|---|---|---|
| M. D. Uhen et al. 2008 | A small-size sperm whale, with a Physeter-like skull; well-developed supracranial basin is bounded by thick crests and has an elevated nuchal crest; rostrum possibly short; maxilla has single-rooted alveoli; lacrimal lacks ventral internal process of the sort present in Physeter; occipital shield is nearly vertically oriented; condyles are large relative to skull size; temporal fossa relatively small (based on Kellogg 1925a). |
Measurements
No measurements are available
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| Source: f = family, subo = suborder, o = order | |||||
| References: Uhen 2004, Nowak 1991 | |||||