Adaffa Formation

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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. Fish,[1] marine reptile[2] and dinosaur[3] remains have been recovered from the formation.

Quick Facts Type, Unit of ...
Adaffa Formation
Stratigraphic range: Campanian
~72 Ma
TypeGeological formation
Unit ofSuqah Group
UnderliesUnconformity with Lower Miocene Al Wajh Formation
OverliesProterozoic granite basement
ThicknessUp to 200 m (660 ft)
Lithology
PrimarySandstone, siltstone, marl
OtherConglomerate
Location
LocationMidyan Peninsula, Tabuk Region
Coordinates27.3°N 35.7°E / 27.3; 35.7
Approximate paleocoordinates9.7°N 29.2°E / 9.7; 29.2
RegionArabian Peninsula
Country Saudi Arabia
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Adaffa Formation (Saudi Arabia)
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Vertebrate paleofauna

Fish

More information Fish of the Adaffa Formation, Genus ...
Fish of the Adaffa Formation
GenusSpeciesLocationStratigraphic positionAbundanceNotesImages
Ceratodus Indeterminate Toothplates Lungfish
cf. Enchodus Indeterminate Teeth
cf. Protosphyraena Indeterminate Teeth Pachycormid
 ?Anacoracidae Indeterminate Vertebrae
Lepisosteidae Indeterminate Vertebral centra
Pycnodontiformes Indeterminate Teeth
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Crocodyliformes

More information Crocodyliformes of the Adaffa Formation, Genus ...
Crocodyliformes of the Adaffa Formation
GenusSpeciesLocationStratigraphic positionAbundanceNotesImages
Dyrosauridae Indeterminate Two vertebrae
Crocodyliformes Indeterminate Cranial fragment
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Plesiosaurians

More information Plesiosaurians of the Adaffa Formation, Genus ...
Plesiosaurians of the Adaffa Formation
GenusSpeciesLocationStratigraphic positionAbundanceNotesImages
Elasmosauridae Indeterminate Rostral portion of a skull
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Squamates

More information Squamates of the Adaffa Formation, Genus ...
Squamates of the Adaffa Formation
GenusSpeciesLocationStratigraphic positionAbundanceNotesImages
Prognathodon Indeterminate Teeth Mosasaur
cf. Pachyvaranus Indeterminate Vertebrae Aquatic varanoid
Mosasauridae Pygal vertebra
Plioplatecarpinae Indeterminate Dorsal vertebra
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Turtles

More information Turtles of the Adaffa Formation, Genus ...
Turtles of the Adaffa Formation
GenusSpeciesLocationStratigraphic positionAbundanceNotesImages
Bothremydidae Indeterminate Shell fragments and a femur
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Non-avian Dinosaurs

More information Dinosaurs of the Adaffa Formation, Genus ...
Dinosaurs of the Adaffa Formation
GenusSpeciesLocationStratigraphic positionAbundanceNotesImages
Abelisauridae Indeterminate Two teeth
Titanosauria Indeterminate Seven caudal vertebrae, seemingly from the same individual
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References

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