Bahariasaurus

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Bahariasaurus
Temporal occurrence
Upper Cretaceous (Lower Cenomanian )
100.5 to 96.2 million years
Locations
Systematics
Ornithodira
Dinosaur (dinosauria)
Lizard dinosaur (Saurischia)
Theropoda
Tetanurae
Bahariasaurus
Scientific name
Bahariasaurus
Stromer , 1934

Bahariasaurus is a theropod dinosaur belonging to the Tetanurae group . The only species assigned to this genus so far is Bahariasaurus ingens . Bahariasaurus is considered a noun dubium and is possiblyidenticalto Deltadromeus . It was a large, bipedal carnivore. Bone finds come from the early Upper Cretaceous (Lower Cenomanian ) of Egypt and possibly from Niger .

Discovery story

The holotype material (HM 1922 X47), like Spinosaurus and Carcharodontosaurus , was discovered between 1911 and 1914 by a German expedition under Ernst Stromer in the Egyptian Bahariyya oasis . During the Second World War, however, the fossils were destroyed in a bombing raid on Munich in the Museum Alte Akademie in 1944. The material consisted of vertebrae, pelvic vertebrae, rib fragments as well as pubis and ischium and probably belonged to an animal that was almost 12 meters long and weighed about 2.5 tons. Stromer also assigned other finds to the Bahariasaurus , as well as some vertebrae from Lapparent .

Kinship relationships

The phylogenetic classification of the Bahariasaurus is still controversial. Rauhut attributed Bahariasaurus to the Carcharodontosauriden , a family within the Allosauroidea. However, critics believe that the material (HM 1912 VIII 62b; vertebrae) on which his conclusions are based does not belong to Bahariasaurus , but perhaps to Carcharodontosaurus .

Chure claims it is a close relative of the Tyrannosauridae .

Individual evidence

  1. ^ Gregory S. Paul : The Princeton Field Guide To Dinosaurs. Princeton University Press, Princeton NJ et al. 2010, ISBN 978-0-691-13720-9 , p. 77, online ( memento of July 13, 2015 in the Internet Archive )
  2. ^ A b Daniel Joseph Chure: A new species of Allosaurus from the Morrison Formation of Dinosaur National Monument (Utah-Colorado) and a revision of the theropod family Allosauridae. New York NY 2000 (New York NY, Columbia University, dissertation, 2000).
  3. ^ Ernst Stromer : Results of Prof. E. Stromer's research trips in the deserts of Egypt. Division 2: vertebrate remains of the Baharîje stage (lowest Cenoman). Volume 13: Dinosauria (= treatises of the Bavarian Academy of Sciences. Mathematical and Natural Science Department. New Volume 22, ISSN  0005-6995 ). Publishing house of the Bavarian Academy of Sciences, Munich 1934.
  4. ^ Albert F. de Lapparent: Les Dinosauriens du "Continental intercalaire" du Sahara central (= Mémoires de la Société Géologique de France. Nouvelle Série 39 = 88A, ISSN  0369-2027 ). Société Géologique de France, Paris 1960.
  5. Oliver WM Rauhut : On the systematic position of the African theropods Carcharodontosaurus Stromer 1931 and Bahariasaurus Stromer 1934. In: Rolf Kohring, Thomas Martin (Ed.): Festschrift Gundolf Ernst (= Berlin geoscientific treatises. Series E: Paläobiologie. Vol. 16, 1 = Miscellanea Palaeontologica. Vol. 4, 1). Volume 1. Department of Geosciences - FU Berlin, Berlin 1995, ISBN 3-89582-001-6 , pp. 357-375.

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