Snow Hill Island Formation

Snow Hill Island Formation
Stratigraphic range: Late Campanian.[1]
Type Geological formation
Unit of Marambio Group
Underlies Lopez de Bertodano Formation
Overlies Santa Marta Formation
Lithology
Primary Sandstone
Location
Coordinates 63°54′S 57°54′W / 63.9°S 57.9°W / -63.9; -57.9Coordinates: 63°54′S 57°54′W / 63.9°S 57.9°W / -63.9; -57.9
Approximate paleocoordinates 61°48′S 68°30′W / 61.8°S 68.5°W / -61.8; -68.5
Region James Ross Island, James Ross Island group
Country Antarctica

Map of James Ross Island group
James Ross Island is number 2

The Snow Hill Island Formation is a Late Campanian geologic formation found on James Ross Island, James Ross Island group, Antarctica. Dromaeosaur[2] remains have been recovered from it, as well as the ornithopods Trinisaura santamartaensis, Morrosaurus antarcticus, Antarctopelta oliveroi, Notidanodon sp. and indeterminate elasmosaurs and Lithostrotia.

See also

References

  1. ↑ Pirrie, D.; Crame, J. A.; Lomas, S. A.; Riding, J. B. (1997). "Late Cretaceous stratigraphy of the Admiralty Sound region, James Ross Basin, Antarctica". Cretaceous Research. 18 (1): 109&ndash, 137. doi:10.1006/cres.1996.0052.
  2. ↑ Case, J.A., Martin, J.E. and Reguero, M. (2007) A dromaeosaur from the Maastrichtian of James Ross Island and the Late Cretaceous Antarctic dinosaur fauna. U.S. Geological Survey and The National Academies; USGS OF-2007-1047, Short Research Paper 083

Further reading

  • J. P. O'Gorman. 2012. The oldest elasmosaurs (Sauropterygia, Plesiosauria) from Antarctica, Santa Marta Formation (upper Coniacian? Santonian-?upper Campanian) and Snow Hill Island Formation (upper Campanian-?lower Maastrichtian), James Ross Island. Polar Research 31(11090):1-10
  • D. Néraudeau, A. Crame, and M. Kooser. 2000. Upper Cretaceous echinoids from James Ross Basin, Antarctica. Géobios 33(4):455-466
  • R. A. Otero, S. Soto-Acuna, A. O. Vargas, D. Rubilar Rogers, R. E. Yury Yanez and C. S. Gutstein. 2013. Additions to the diversity of elasmosaurid plesiosaurs from the Upper Cretaceous of Antarctica. Gondwana Research
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