Adaffa Formation: Difference between revisions

Adaffa Formation
Adaffa Formation
Stratigraphic range: Campanian ~72 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Suqah Group
Underlies	Unconformity with Lower Miocene Al Wajh Formation
Overlies	Unconformity with Proterozoic rocks
Thickness	Up to 200 m
Lithology
Primary	Sandstone, Siltstone, Marl
Other	Conglomerate
Location
Location	Midyan Peninsula, Tabuk Region
Region	Arabian Peninsula
Country	Saudi Arabia

Content deleted Content added

Inline

Revision as of 22:40, 7 July 2018

The Adaffa Formation is a Geological formation in Saudi Arabia, and the lowermost unit of the Suqah Group. It dates back to the Campanian of the Late Cretaceous. The Lithology consists of Sandstone, Siltstone and Marl, with a basal granitic conglomerate with phosphatic nodules. Also present are ferricrete horizons. It was deposited in marginal marine conditions close to land.^[1] Fish^[2], marine reptile and dinosaur^[3] remains have been recovered from the formation.

Crocodyliformes of the Adaffa Formation
Genus	Species	Location	Stratigraphic position	Abundance	Notes	Images
Dyrosauridae	Indeterminate			Two vertebrae
Crocodyliformes	Indeterminate			Cranial fragment

Plesiosaurians of the Adaffa Formation
Genus	Species	Location	Stratigraphic position	Abundance	Notes	Images
Elasmosauridae	Indeterminate			Rostral portion of a skull

Squamates of the Adaffa Formation
Genus	Species	Location	Stratigraphic position	Abundance	Notes	Images
Prognathodon	Indeterminate			Teeth	Mosasaur
cf. Pachyvaranus	Indeterminate			Vertebrae	Aquatic Varanoid

Turtles of the Adaffa Formation
Genus	Species	Location	Stratigraphic position	Abundance	Notes	Images
Bothremydidae	Indeterminate			Shell fragments and a femur

Dinosaurs of the Adaffa Formation
Genus	Species	Location	Stratigraphic position	Abundance	Notes	Images
Abelisauridae	Indeterminate			Two teeth
Titanosauria	Indeterminate			Seven caudal vertebrae, seemingly from the same Individual.

^ Kear, B. P.; Rich, T. H.; Ali, M. A.; Al-Mufarrih, Y. A.; Matiri, A. H.; Masary, A. M.; Attia, Y. (2008/09). "Late Cretaceous (Campanian—Maastrichtian) marine reptiles from the Adaffa Formation, NW Saudi Arabia". Geological Magazine. 145 (5): 648–654. doi:10.1017/S0016756808005062. ISSN 1469-5081. {{cite journal}}: Check date values in: |date= (help)
^ Kear, Benjamin P.; Rich, Thomas H.; Ali, Mohammed A.; Al-Mufarrih, Yahya A.; Matiri, Adel H.; Al-Masary, Abdu M.; Attia, Yousry (2009-10). "An Upper Cretaceous (Campanian-Maastrichtian) actinopterygian fish assemblage from the marginal marine Adaffa Formation of Saudi Arabia". Cretaceous Research. 30 (5): 1164–1168. doi:10.1016/j.cretres.2009.05.002. ISSN 0195-6671. {{cite journal}}: Check date values in: |date= (help)
^ Kear, Benjamin P.; Rich, Thomas H.; Vickers-Rich, Patricia; Ali, Mohammed A.; Al-Mufarreh, Yahya A.; Matari, Adel H.; Al-Massari, Abdu M.; Nasser, Abdulaziz H.; Attia, Yousry (2013-12-26). "First Dinosaurs from Saudi Arabia". PLOS ONE. 8 (12): e84041. doi:10.1371/journal.pone.0084041. ISSN 1932-6203. PMC 3873419. PMID 24386326.{{cite journal}}: CS1 maint: PMC format (link) CS1 maint: unflagged free DOI (link)