Hyrachyus modestus Leidy 1870

Mammalia - Perissodactyla - Hyrachyidae

Alternative combinations: Isectolophus modestus, Lophiodon modestus

Synonyms: Colonoceras agrestis Marsh 1873, Ephyrachyus cristalophus Wood 1934, Hyrachyus affinis Marsh 1871, Hyrachyus agrarius Leidy 1871, Hyrachyus agrestis Leidy 1871, Hyrachyus bairdianus Marsh 1871, Hyrachyus bicornutus Troxell 1922, Hyrachyus crassidens Osborn et al. 1878, Lophiodon affinis Marsh 1871, Lophiodon bairdianus Marsh 1871, Metahyrachyus bicornutus Troxell 1922

Full reference: J. Leidy. 1870. [Abstract of remarks made before a meeting of the Academy of Natural Sciences of Philadelphia, October 4th, 1870]. Proceedings of the Academy of Natural Sciences of Philadelphia 22(3):109-110

Belongs to Hyrachyus according to L. B. Radinsky 1967

See also Colbert and Schoch 1998, Cope 1873, Emry 1990, Gazin 1976, Hay 1902, Leidy 1870, Leidy 1871, Marsh 1871, Marsh 1873, Matthew 1909, McCarroll et al. 1996, Osborn et al. 1878, Schoch 1984, Schoch 1989, Troxell 1922, Troxell 1922 and Wood 1934

Sister taxa: Hyrachyus crista, Hyrachyus eximius, Hyrachyus grandis, Hyrachyus lunanensis, Hyrachyus metalophus, Hyrachyus minor, Hyrachyus neimongoliensis, Hyrachyus paradoxus, Hyrachyus tongi, Chasmotherium depereti

Type specimens:

  • Hyrachyus modestus: Its type locality is Smith's Fork, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming
  • Colonoceras agrestis:
  • Ephyrachyus cristalophus:
  • Hyrachyus agrarius:
  • Hyrachyus agrestis: Its type locality is Black's Fork, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.
  • Hyrachyus crassidens:
  • Lophiodon affinis: Its type locality is Marsh's Fork (Lower Bridger), which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.
  • Lophiodon bairdianus:
  • Metahyrachyus bicornutus: YPM 10258, a skull.

Distribution:

• Eocene of China (2 collections), United States (33: Colorado, Nevada, Texas, Utah, Wyoming)

Total: 35 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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