Glyptosaurus sylvestris Marsh 1871 (squamates)

Reptilia - Squamata - Anguidae

Synonyms: Eoglyptosaurus donohoei White 1952, Glyptosaurus brevidens Marsh 1872, Glyptosaurus donohoei White 1952, Glyptosaurus hillsi Gilmore 1928, Glyptosaurus nodosus Marsh 1871, Glyptosaurus ocellatus Marsh 1871, Glyptosaurus princeps Marsh 1872, Glyptosaurus rugosus Marsh 1872, Paraglyptosaurus princeps Marsh 1872

Full reference: O. C. Marsh. 1871. A communication on some new reptiles and fishes from the Cretaceous and Tertiary formations. Proceedings of the Academy of Natural Sciences of Philadelphia 1871:103-105

Belongs to Glyptosaurus according to J.-P. Zonneveld et al. 2000

See also Gilmore 1928, Gilmore 1943, Hay 1902, Hay 1930, Leidy 1873, Marsh 1871, Marsh 1872, Sullivan 1979, Sullivan 1989 and White 1952

Sister taxa: Glyptosaurus agmodon, Glyptosaurus obtusidens, Glyptosaurus rhodinos, Glyptosaurus sphenodon

Type specimens:

  • Glyptosaurus sylvestris: YPM 526 (=USNM 6523) (left frontal). Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.
  • Glyptosaurus brevidens: YPM 521 (many parts of broken skull and jaws, several short articulated series of cervical and dorsal vertebrae and numerous skull and body osteoderm patches). Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.
  • Glyptosaurus donohoei: USNM 18316, a partial skull (badly damaged skull). Its type locality is Boysen Reservoir (48FR65), which is in a Wasatchian terrestrial horizon in the Wind River Formation of Wyoming.
  • Glyptosaurus hillsi: USNM 6004 (greater portion of top of skull, both maxillae with teeth, both quadrates, anterior portions of both jugals, greater portion of right ramus and portions of left). Its type locality is Huerfano I, which is in a Bridgerian terrestrial horizon in the Huerfano Formation of Colorado.
  • Glyptosaurus nodosus: YPM 522 (frontal, two body scutes, unidentified skull fragment). Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.
  • Glyptosaurus ocellatus: YPM 523 (small patch of cranial scutes).
  • Glyptosaurus princeps: YPM 524 (=USNM 16539) (considerable portion of coalesced frontals, median part of right pterygoid, fragm. portions of both rami including symph. end of left dentary, dermal scutes, ph). Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.
  • Glyptosaurus rugosus: YPM 525 (posterior portions of coosified frontal bones). Its type locality is Grizzly Buttes, which is in a Bridgerian terrestrial horizon in the Bridger Formation of Wyoming.

Ecology: ground dwelling insectivore-carnivore

Distribution:

• Eocene of United States (24: Colorado, Utah, Wyoming collections)

Total: 24 collections including 36 occurrences

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