Mabdi Formation

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Mabdi Formation
Stratigraphic range: Kimmeridgian
Type Geological formation
Unit of Surdud Group
Underlies Tawila Sandstone
Overlies Amran Formation
Thickness60 to 290 metres
Lithology
Primary Limestone, Sandstone, Shale
Location
CountryFlag of Yemen.svg  Yemen

The Mabdi Formation is a Late Jurassic geologic formation in western Yemen. It is considered Kimmeridgian in age based on invertebrates. It is laterally equivalent to the Sabatain Formation. It consists of limestone, sandstone and shale deposited in a nearshore shallow marine setting during widespread marine transgression on the Arabian Shelf. Remains of vertebrates, including Dinosaurs have been recovered from the formation. [1] These include the remains of an indeterminate sauropod as well as those of hybodont sharks, pycnodont fish, turtles, and crocodilians. The sauropod was found in hard calcite cemented sandstone, not all of the bones of the individual were collected, with many remaining at the locality pending further excavation [2]

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Footnotes

  1. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  2. Jacobs, L.L., Murry, P.A., Downs, W.R., El-Nakhal, H.A., 1999. A dinosaur from the Republic of Yemen. In: Whybrow, P.J., Hill, A. (Eds.), Fossil Vertebrates of Arabia. (Arabic:Faqārīyāt Al-uḥfūrīyah Fī Al-Jazīrah Al-ʻArabīyah) Yale University Press, New Haven, pp. 454–459. https://books.google.com/books?id=8Tf4PyFR_e8C&pg=RA4-PA455&q=Mabdi+Formation

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