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 | |
| Type | Geological formation |
| Unit of | Etendeka Group |
| Overlies | Omingonde Fm. (Waterberg Basin) Doros or Gai-As Formation (Huab Basin) |
| Thickness | 140 m (460 ft) |
| Lithology | |
| Primary | Sandstone |
| Location | |
| Location | Damaraland |
| Coordinates | 21°24′S 16°42′E / 21.4°S 16.7°E |
| Approximate paleocoordinates | 30°12′S 8°48′W / 30.2°S 8.8°W |
| Region | Kunene & Erongo Regions |
| Country |  Namibia |
| Extent | Waterberg 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
edit- ^ D'Orazi et al., 2015, p.73
- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ Otjihaene-Maparero farm at Fossilworks.org
Bibliography
edit- 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
edit- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.