The Etjo Sandstone is an
Early Jurassic
The Early Jurassic Epoch (geology), Epoch (in chronostratigraphy corresponding to the Lower Jurassic series (stratigraphy), Series) is the earliest of three epochs of the Jurassic Period. The Early Jurassic starts immediately after the Triassic-J ...
geologic
formation
Formation may refer to:
Linguistics
* Back-formation, the process of creating a new lexeme by removing or affixes
* Word formation, the creation of a new word by adding affixes
Mathematics and science
* Cave formation or speleothem, a secondar ...
in northern
Namibia
Namibia (, ), officially the Republic of Namibia, is a country in Southern Africa. Its western border is the Atlantic Ocean. It shares land borders with Zambia and Angola to the north, Botswana to the east and South Africa to the south and ea ...
. The formation overlies the
Omingonde Formation
The Omingonde Formation is an Early Triassic, Early to Middle Triassic (Anisian to Ladinian) geologic Formation (geology), formation, part of the Karoo Supergroup, in the western Otjozondjupa Region and northeastern Erongo Region of north-central N ...
in the
Waterberg Basin and the
Doros and
Gai-As Formation
The Gai-As Formation is an Early Permian, Early to Middle Permian (Kungurian to Wordian) geologic Formation (geology), formation correlated with the Ecca Group and designated "Ecca" Group, because it does not belong to the Karoo, in the southweste ...
s in the
Huab Basin and has a total thickness of . Fossil
theropod
Theropoda (; ), whose members are known as theropods, is a dinosaur clade that is characterized by hollow bones and three toes and claws on each limb. Theropods are generally classed as a group of saurischian dinosaurs. They were ancestrally c ...
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.
[Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.]Otjihaene-Maparero farm
at Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database
The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals ...
.org
See also
* List of dinosaur-bearing rock formations
This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented.
Containing body fossils
* List of stratigraphic units with dinosaur body fossils
** List of stratigraphic units with few ...
** List of stratigraphic units with theropod tracks
The following tables list the global geological sites where tracks of theropod dinosaurs have been found, together with the proper names of the rock formations (stratigraphic units) that contain them.
Non-avian theropods
Avialans
See also
*L ...
* List of fossiliferous stratigraphic units in Namibia
Fossiliferous stratigraphic units in Namibia are not as numerous as in neighboring South Africa, but several formations have provided unique fossil assemblages, particularly the Ediacaran fauna of the Vendian to Cambrian Nama Group, fossil fish ...
* Geology of Namibia
The geology of Namibia encompasses rocks of Paleoproterozoic, Mesoproterozoic and Neoproterozoic and Paleozoic to Cenozoic age. About 46% of the countryʼs surface are bedrock exposure, while the remainder is covered by the young overburden sedimen ...
References
Bibliography
*
Bubliography
* Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. {{ISBN, 0-520-24209-2.
Geologic formations of Namibia
Jurassic System of Africa
Early Jurassic Africa
Sandstone formations
Aeolian deposits
Ichnofossiliferous formations
Paleontology in Namibia