Quseir Formation

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Quseir Formation
Stratigraphic range: Campanian
~80–72  Ma
Type Geological formation
Sub-unitsMut & El Hindaw Members
Underlies Duwi Formation
OverliesUnconformity with Taref Formation
Thicknessat least 250 metres (820 ft)
Lithology
Primary Shale
Other Sandstone, siltstone, phosphorite
Location
Location Al Wadi al Jadid, New Valley
Coordinates 25°36′N29°06′E / 25.6°N 29.1°E / 25.6; 29.1
Approximate paleocoordinates 9°18′N24°54′E / 9.3°N 24.9°E / 9.3; 24.9
Region Kharga Oasis
CountryFlag of Egypt.svg  Egypt
Egypt relief location map.jpg
Lightgreen pog.svg
Quseir Formation (Egypt)

The Quseir Formation is a geological formation in the vicinity of the Kharga Oasis in Egypt. [1] It is Campanian In age. [2] The lithology largely consists of soft shale with hard bands of sandstone, siltstone and phosphorite. [3] The environment of deposition was nearshore to freshwater fluvio-lacustrine characterized by moist and aquatic habitats with a tropical warm-humid climate. It is conformably overlain by the marine late Campanian-Maastrichtian Duwi Formation, and unconformably overlies the Turonian Taref Formation. The sauropod dinosaurs Mansourasaurus and Igai are known from the formation, [4] [5] as well as the proximal fibula of an indeterminate theropod. [6] Additionally the lungfish genera Lavocatodus and Protopterus , [7] the crocodyliform Wahasuchus [8] and the bothremydid turtle Khargachelys are also known. [9]

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References

  1. Quseir Formation at Fossilworks.org
  2. Mahmoud, Magdy S. (April 2003). "Palynology and palaeoenvironment of the Quseir Formation (Campanian) from central Egypt". Journal of African Earth Sciences. 36 (3): 135–148. Bibcode:2003JAfES..36..135M. doi:10.1016/s0899-5362(03)00047-2. ISSN   1464-343X.
  3. Sallam, Hesham M.; O'Connor, Patrick M.; Kora, Mahmoud; Sertich, Joseph J.W.; Seiffert, Erik R.; Faris, Mahmoud; Ouda, Khaled; El-Dawoudi, Iman; Saber, Sara (May 2016). "Vertebrate paleontological exploration of the Upper Cretaceous succession in the Dakhla and Kharga Oases, Western Desert, Egypt". Journal of African Earth Sciences. 117: 223–234. Bibcode:2016JAfES.117..223S. doi: 10.1016/j.jafrearsci.2016.01.022 . ISSN   1464-343X.
  4. Sallam, Hesham M.; Gorscak, Eric; O’Connor, Patrick M.; El-Dawoudi, Iman A.; El-Sayed, Sanaa; Saber, Sara; Kora, Mahmoud A.; Sertich, Joseph J. W.; Seiffert, Erik R. (2018-01-29). "New Egyptian sauropod reveals Late Cretaceous dinosaur dispersal between Europe and Africa". Nature Ecology & Evolution. 2 (3): 445–451. doi:10.1038/s41559-017-0455-5. ISSN   2397-334X. PMID   29379183. S2CID   3375335.
  5. Gorscak, Eric; Lamanna, Matthew C.; Schwarz, Daniela; Díaz, Verónica díez; Salem, Belal S.; Sallam, Hesham M.; Wiechmann, Marc Filip (2023-07-20). "A new titanosaurian (Dinosauria: Sauropoda) from the Upper Cretaceous (Campanian) Quseir Formation of the Kharga Oasis, Egypt". Journal of Vertebrate Paleontology. doi: 10.1080/02724634.2023.2199810 . ISSN   0272-4634.
  6. Salem, Belal S.; O'Connor, Patrick M.; Gorscak, Eric; El-Sayed, Sanaa; Sertich, Joseph J.W.; Seiffert, Erik; Sallam, Hesham M. (2021-07-01). "Dinosaur remains from the Upper Cretaceous (Campanian) of the Western Desert, Egypt". Cretaceous Research. 123: 104783. Bibcode:2021CrRes.12304783S. doi: 10.1016/j.cretres.2021.104783 . ISSN   0195-6671. S2CID   233900405.
  7. Claeson, Kerin M; Sallam, Hesham M; O'Connor, Patrick M.; Sertich, Joseph J. W. (2014). "A revision of the Upper Cretaceous lepidosirenid lungfishes from the Quseir Formation, Western Desert, central Egypt". Journal of Vertebrate Paleontology. 34 (4): 760–766. Bibcode:2014JVPal..34..760C. doi:10.1080/02724634.2014.838574. S2CID   17120150.
  8. Saber, Sara; Sertich, Joseph J.W.; Sallam, Hesham M.; Ouda, Khaled A.; O'Connor, Patrick M.; Seiffert, Erik R. (October 2018). "An enigmatic crocodyliform from the Upper Cretaceous Quseir Formation, central Egypt". Cretaceous Research. 90: 174–184. Bibcode:2018CrRes..90..174S. doi: 10.1016/j.cretres.2018.04.004 . ISSN   0195-6671.
  9. AbdelGawad, Mohamed; Pérez-García, Adán; Hirayama, Ren; Mohesn, Sara; Tantawy, Abdel-Aziz; Abu El-Kheir, Gebely (February 2023). "The First Side-Necked Turtle (Pleurodira, Bothremydidae) from the Campanian (Late Cretaceous) of Egypt". Diversity. 15 (2): 284. doi: 10.3390/d15020284 . ISSN   1424-2818.