Deperetella

Deperetella is an extinct genus of deperetellid perissodactyls from Middle to Late Eocene of Asia.^[2] The genus was defined in 1925 by W. D. Matthew and Walter W. Granger, who named it after French paleontologist Charles Depéret.^[3] The type species is Deperetella cristata.^[4][2]

Deperetella Temporal range: Eocene
Lower jaw of Deperetella cristata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Perissodactyla
Family:	†Deperetellidae
Genus:	†Deperetella Matthew & Granger, 1925
Type species
†Deperetella cristata Matthew & Granger, 1925
Species
D. cristata Matthew & Granger, 1925 (type) D. depereti Zdansky, 1930 D. dienensis Chow et al., 1974 D. khaitchinulensis Reshetov, 1979 D. kungeica Tarasov, 1968 D. sichuanensis Xu et al., 1979
Synonyms[1]
Cristidentinus Zdansky, 1930 Diplolophodon Zdansky, 1930

Description

The front-root teeth (premolars) are longer than the posterior-root teeth (molars), there are well-developed hypolophides on P3-P4, and the forelimbs are three-toed. It differs from Teleolophus in the size of the molars.^[4][2] Postcranial skeleton of Deperetella shares many similarities with that of Teleolophus, in particular: long and slender limbs, relatively elongated and narrow lunar with a slightly concave medial edge of the radial facet, fibula reduced or fused with the tibia, three functional fingers on the limbs.^[5]

Taxonomy

The genus Diplolophodon, erected by Zdansky (1930) based on an upper dentition from the Heti Formation, China, was defined by Radinsky (1965) as a junior synonym of Deperetella.^[2] In Reshetov and Tatarinov (1979),^[4] Tsubamoto et al. (2000)^[2] and later works Diplolophodon is also considered as a synonym of Deperetella.^[6] However, it recovered as a valid genus in Deperetellidae family in a work of Bai Bin (2023).^[6] The species Deperetella birmanica from Myanmar was assigned to the new genus Bahinolophus in 2005.^[6]

References

1. Tsubamoto, T.; Egi, N.; Takai, M.; Sein, C.; Maung, M. (2005). "Middle Eocene ungulate mammals from Myanmar: A review with description of new specimens" (PDF). Acta Palaeontologica Polonica. 50 (1): 117–138. Archived from the original (PDF) on 2022-02-02.
2. Takehisa Tsubamoto, Patricia A. Holroyd, Masanaru Takai, Nobuo Shigehara, Aye Ko Aung, Tin Thein, Aung Naing Soe, Soe Thura Tun (2000). "Upper premolar dentitions of Deperetella birmanica (Mammalia: Perissodactyla: Deperetellidae) from the Eocene Pondaung Formation, Myanmar" (PDF). Paleontological Research. 4 (3): 183-189. Archived (PDF) from the original on 2022-03-20.{{cite journal}}: CS1 maint: multiple names: authors list (link)
3. Matthew, W. D.; Granger, W. (1925). "New mammals from the Shara Murun Eocene of Mongolia" (PDF). American Museum Novitates (196). Archived from the original (PDF) on 2017-01-02.
4. V. U. Reshetov, L. P. Tatarinov (1979). Раннетретичные тапирообразные Монголии и СССР [Early Tertiary tapiroids of Mongolia and USSR] (in Russian). Nauka. p. 38.
5. Bai Bin, Wang Yuan-Qing, Meng Jin (2018). "Postcranial morphology of Middle Eocene deperetellid Teleolophus (Perissodactyla, Tapiroidea) from Shara Murun region of the Erlian Basin, Nei Mongol, China". Vertebrata PalAsiatica. 56 (3): 193-215. doi:10.19615/j.cnki.1000-3118.171214.{{cite journal}}: CS1 maint: multiple names: authors list (link)
6. Bai Bin (2023). "Reappraisal of some perissodacyl fossils from the Middle Eocene of the Lijiang Basin, Yunnan, China with a revision of tapiroid Diplolophodon". Vertebrata PalAsiatica. 61 (1): 26-42. doi:10.19615/j.cnki.2096-9899.220721.