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Taxonomy
Thinocetus was named by Kellogg (1969).
It was assigned to Diorocetidae by Steeman (2007); to Mysticeti by Uhen et al. (2008); to Balaenopteroidea by Marx and Fordyce (2015); to Cetotheriidae by Kellogg (1969), Gottfried et al. (1994), McKenna and Bell (1997), Whitmore and Barnes (2008), Berta (2017); and to Balaenomorpha by Hampe and Fahlke (2022).
It was assigned to Diorocetidae by Steeman (2007); to Mysticeti by Uhen et al. (2008); to Balaenopteroidea by Marx and Fordyce (2015); to Cetotheriidae by Kellogg (1969), Gottfried et al. (1994), McKenna and Bell (1997), Whitmore and Barnes (2008), Berta (2017); and to Balaenomorpha by Hampe and Fahlke (2022).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Thinocetus Kellogg |
| 1994 | Thinocetus Gottfried et al. p. 233 |
| 1997 | Thinocetus McKenna and Bell p. 376 |
| 2007 | Thinocetus Steeman p. 880 |
| 2008 | Thinocetus Uhen et al. p. 617 |
| 2008 | Thinocetus Whitmore and Barnes p. 173 |
| 2015 | Thinocetus Marx and Fordyce p. 4 figs. Figure 2 |
| 2017 | Thinocetus Berta p. 168 |
| 2022 | Thinocetus Hampe and Fahlke p. 15 |
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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 | |
|---|---|---|
| O. Hampe and J. M. Fahlke 2022 | Enlarged, strongly protruding, robust occipital condyles; small foramen magnum; supraoccipital strongly concave above the foramen magnum; exoccipitals flattened, not protruding poste- riorly and confluent with the adjacent bones; periotic with small pars cochlearis; anterior process of periotic sub-trapezoidal and anteriorly blunt; compound poste- rior process of the tympanoperiotic relatively slender; tympanic bullae with posteriorly extremely thick invo- lucrum; tympanic bullae box-shaped in ventromedial and dorsolateral views due to prominent posterolater- al process on the involucral bulge; involucrum with distinct ornament of mediolaterally oriented wrinkles; crus breve of the incus short with about one third of the length of the crus longum. |
Measurements
No measurements are available
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| Source: subo = suborder, o = order | |||||
| Reference: Uhen 2004 | |||||
Age range: Serravallian or 13.82000 to 11.63000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Serravallian | USA (Virginia) | T. arthritis (126605) T. arthritus (13407 71818) | |
| Serravallian | Germany (Schleswig-Holstein) | T. sp. (53894) | |
| Serravallian | USA (Maryland) | T. arthritus (13408) |