The Etjo Sandstone is an Early Jurassic geologic formation in northern Namibia. The formation overlies the Omingonde Formation in the Waterberg Basin and the Doros and Gai-As Formations in the Huab Basin and has a total thickness of 140 metres (460 ft).[1] Fossil theropod tracks of Prosauropoda indet., Theropoda indet., Tetrapodium elmenhorsti, Saurichnium anserinum, S. damarense, S. parallelum and S. tetractis have been reported from the formation, deposited in an aeolian environment.[2][3]

Etjo Sandstone
Stratigraphic range: Early Jurassic
Dinosaur trace fossil in the Etjo Sandstone
TypeGeological formation
Unit ofEtendeka Group
OverliesOmingonde Fm. (Waterberg Basin)
Doros or Gai-As Formation (Huab Basin)
Thickness140 m (460 ft)
Lithology
PrimarySandstone
Location
LocationDamaraland
Coordinates21°24′S 16°42′E / 21.4°S 16.7°E / -21.4; 16.7
Approximate paleocoordinates30°12′S 8°48′W / 30.2°S 8.8°W / -30.2; -8.8
RegionKunene & Erongo Regions
Country Namibia
ExtentWaterberg Basin
Huab Basin

Geologic map of Namibia with the Etjo Sandstone partly cropping out in the northwestern area (orange)

See also

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References

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  1. ^ D'Orazi et al., 2015, p.73
  2. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. ^ Otjihaene-Maparero farm at Fossilworks.org

Bibliography

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  • D'Orazi Porchetti, S.; Mocke, H.B.; Latiano, M.; Wagensommer, A. (2015), "First record of Otozoum from Namibia" (PDF), Lethaia, 48 (1): 72–82, Bibcode:2015Letha..48...72D, doi:10.1111/let.12088, retrieved 2018-08-28

Bubliography

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  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.