Allacerops

Allacerops
Temporal range: Oligocene,
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Eggysodontidae
Genus: Allacerops
Wood, 1932
Type species
Epiaceratherium turgaicum
Borissiak, 1915
Species[1]
  • A. turgaica (Borissiak, 1915)
  • A.? minor (Beliajeva, 1954)
  • A. ningdongica Lu et al., 2026

Allacerops is an extinct genus of odd-toed ungulate belong to the rhinoceros-like family Eggysodontidae. It was a small, ground-dwelling browser, and fossils have been found in Oligocene deposits throughout Central and East Asia.

Allacerops was synonymized with Eggysodon by Heissig (1989), but is now considered a distinct genus.[2][3][4][5] Unaware that Wood (1932) made turgaica the type species of Allacerops, Reshetov et al. (1993) erected Tenisia for "Epiaceratherium" turgaica. Tenisia, however, was already in use for a brachiopod, so Spassov (1994) erected Teniseggysodon as a replacement. In any case, Qiu et al. (1999) recognized Teniseggysodon a junior objective synonym of Allacerops as both were based on the same type species.[6][7][8]

References

  1. ^ Lu, X.; Deng, T.; Sun, B.; Sun, D.; Li, S. (2026). "A new rhinocerotoid (Mammalia, Perissodactyla) from the early Oligocene of Ningdong, China, and its phylogenetic implications". Journal of Mammalian Evolution. 32 (4) 47. doi:10.1007/s10914-025-09791-2.
  2. ^ Heissig, K., 1989. Rhinocerotidae. In D. R. Prothero and R. M. Schoch, (eds.), The evolution of perissodactyls, pp.399-417. New York: Oxford Univ. Press.
  3. ^ B.-Y. Wang and Z.-X. Qiu. 2004. Discovery of early Oligocene mammalian fossils from Danghe area, Gansu, China. Vertebrata PalAsiatica 42(2):130-143
  4. ^ B. Bai and Y.-Q. Wang. 2012. Proeggysodon gen. nov., a primitive Eocene eggysodontine (Mammalia, Perissodactyla) from Erden Obo, Siziwangqi, Nei Mongol, China. Vertebrata PalAsiatica 50(3):204-218
  5. ^ H. Wang, B. Bai, J. Meng and Y. Wang. 2016. Earliest known unequivocal rhinocerotoid sheds new light on the origin of Giant Rhinos and phylogeny of early rhinocerotoids. Scientific Reports 6:39607:1-9
  6. ^ Reshetov, V., Spassov, N., and Baishashov, B., 1993. Tenisia gen. nov.: Taxonomic revaluation of the Asian Oligocene Rhinocerotoid Eggysodon turgaicum (Borissiak, 1915) (Mammalia, Perissodactyla, Hyracodontidae). Geobios 26(3): 715–722.
  7. ^ Qiu Zhan-xiang; Wang Ban-yue, 1999. Allacerops (Rhinocerotoidea, Perissodactyla) its discovery in China and its systematic position. Vertebrata PalAsiatica 37 (1): 48-61, pl.1
  8. ^ Spassov, N., 1994. Teniseggysodon nom. nov. pro Tenisia Reshetov, Spassov, Baishashov, 1993 (Mammalia, Perissodactyla, Hyracodontidae). Geobios, 27(2):220.