The Abu Agag Formation is a
Turonian
The Turonian is, in the International Commission on Stratigraphy, ICS' geologic timescale, the second age (geology), age in the Late Cretaceous epoch (geology), Epoch, or a stage (stratigraphy), stage in the Upper Cretaceous series (stratigraphy), ...
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 ...
in
Egypt
Egypt ( , ), officially the Arab Republic of Egypt, is a country spanning the Northeast Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via the Sinai Peninsula. It is bordered by the Mediterranean Sea to northe ...
and
Sudan
Sudan, officially the Republic of the Sudan, is a country in Northeast Africa. It borders the Central African Republic to the southwest, Chad to the west, Libya to the northwest, Egypt to the north, the Red Sea to the east, Eritrea and Ethiopi ...
. Indeterminate fossil
ornithischian
Ornithischia () is an extinct clade of mainly herbivorous dinosaurs characterized by a pelvic structure superficially similar to that of birds. The name ''Ornithischia'', or "bird-hipped", reflects this similarity and is derived from the Greek st ...
tracks have been reported from the formation.
[Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607]
Description
The formation comprises intercalated
sandstone
Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...
s and highly
bioturbated sand- and siltstone layers which are horizontal and wavy bedded. Horizontally laminated and thin bedded fine-grained sandstones as well as flaser- and ripple cross-lamination characterize a low-energy environment within this fluvial succession.
Fossil content
The following fossils have been reported from the formation:
Bushmans River, Woodbury Farm
at Fossilworks
Fossilworks was a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database, a large relational database assembled by hundreds of paleontologists from around the world.
History
Fossilworks was cr ...
.org
* '' Planolites sp.''
* '' Rhynchosauroides sp.''
* '' cf. Rotodactylus sp.''
* '' Scoyenia sp.''
* '' Spirodesmos sp.''
* Dinosauria indet.
* ?Ornithischia 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.
* List of stratigraphic units with dinosaur body fossils
* List of stratigraphic units with dinosaur trace fossils
** ...
*
** List of stratigraphic units with ornithischian tracks
Indeterminate or unspecified ornithischian tracks
Ceratopsians
Ornithopods
Thyreophorans
Ankylosaurs
Stegosaurs
See also
List of dinosaur-bearing rock formations
This list of dinosaur-bearing rock formations is a list of geologi ...
*** Indeterminate ornithischian tracks
References
Bibliography
* {{citation , last1=Weishampel , first1=David B. , author2-link=Peter Dodson , last2=Dodson , first2=Peter , author3-link=Halszka Osmólska , last3=Osmólska , first3=Halszka , year=2004 , title=The Dinosauria, 2nd edition , url=https://books.google.com/books?id=vtZFDb_iw40Cy , publisher=Berkeley: University of California Press , pages=1–880 , accessdate=2019-02-21 , isbn=0-520-24209-2 , author1-link=David B. Weishampel
Cretaceous Egypt
Cretaceous Sudan
Upper Cretaceous Series of Africa
Turonian Stage
Sandstone formations
Siltstone formations
Fluvial deposits
Ichnofossiliferous formations