The Shendi Formation is a
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', ...
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 secondary ...
of the
Atbara-Shendi Basin in northern Sudan.
[Eltayib et al., 2018, p.2] Indeterminate
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 ...
remains have been recovered from it.
[Weishampel, et al. (2004). "Dinosaur distribution" Pp. 517-607. in Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. . " Pp. 517-607.] As well as those of the
dyrosaurid ''
Hyposaurus
''Hyposaurus'' is a genus of extinct marine dyrosaurid crocodyliform. Fossils have been found in Paleocene aged rocks of the Iullemmeden Basin in West Africa, Campanian–Maastrichtian (Late Cretaceous) Shendi Formation of Sudan and Maastri ...
''. It consists of a lower unit of fine grained meandering channel sediments, separated by an erosive contact with overlying meandering to braided river channel sandstones.
The formation overlies
Precambrian
The Precambrian (or Pre-Cambrian, sometimes abbreviated pꞒ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of th ...
basement and is overlain by the
Hudi Chert.
[Eltayib et al., 2018, p.2] The total thickness of the formation amounts to .
[Eltayib et al., 2018, p.3]
Paleofauna
*''
Hyposaurus
''Hyposaurus'' is a genus of extinct marine dyrosaurid crocodyliform. Fossils have been found in Paleocene aged rocks of the Iullemmeden Basin in West Africa, Campanian–Maastrichtian (Late Cretaceous) Shendi Formation of Sudan and Maastri ...
''
*
Theropoda
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 ca ...
indet.
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 f ...
**
List of stratigraphic units with indeterminate dinosaur fossils
References
Bibliography
* {{cite LSA , last=Eltayib , first=Sadam H.M.A. , last2=Al-Imam , first2=Omar A. O. , last3=Hamza , first3=J. Adam , last4=Salim , first4=Mudathir A. , year=2018 , title=Sedimentary Environments and Lithofacies Distribution of Upper Shendi Formation, Central Sudan , journal=
, volume=6 , pages=1–9
Geologic formations of Sudan
Upper Cretaceous Series of Africa
Maastrichtian Stage
Sandstone formations
Siltstone formations
Mudstone formations
Fluvial deposits
Fossiliferous stratigraphic units of Africa
Paleontology in Sudan
Formations