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First dinosaurs from Saudi Arabia.

Benjamin P Kear1, Thomas H Rich2, Patricia Vickers-Rich3

  • 1Department of Earth Sciences, Uppsala University, Uppsala, Sweden.

Plos One
|January 4, 2014
PubMed
Summary
This summary is machine-generated.

First identifiable dinosaur fossils from Saudi Arabia include titanosaurian and abelisaurid dinosaurs. This discovery expands the known range of these Late Cretaceous species along the Gondwanan margin.

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Area of Science:

  • Paleontology
  • Vertebrate Paleontology
  • Mesozoic Paleontology

Background:

  • Dinosaur remains from the Arabian subcontinent are rare and typically lack clear taxonomic identification.
  • Previous discoveries have not provided identifiable dinosaur material from the Arabian Peninsula.

Purpose of the Study:

  • To describe the first taxonomically identifiable dinosaur fossils from the Arabian Peninsula.
  • To analyze the affinities of newly discovered dinosaur remains from Saudi Arabia.

Main Methods:

  • Excavation of Campanian-Maastrichtian (~75 Ma) deposits in northwestern Saudi Arabia.
  • Morphological and statistical analysis of fossilized caudal vertebrae and theropod teeth.
  • Multivariate statistical methods to compare fossil parameters with known dinosaur clades.

Main Results:

  • Identification of possible lithostrotian titanosaur caudal vertebrae.
  • Discovery of theropod marginal teeth with characteristics aligning with derived abelisaurids.
  • First definitive evidence of non-avian carnivorous dinosaurs (abelisaurids) in Arabia.

Conclusions:

  • The Saudi Arabian fossils represent the first identifiable dinosaur material from the Arabian Peninsula.
  • The presence of titanosaurians and abelisaurids extends their known paleogeographical range along the northern Gondwanan margin.
  • These findings offer insights into dinosaur diversity in the region during the Late Cretaceous.