Aragosaurus

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Aragosaurus
Temporal occurrence
Upper Hauterivium to Lower Barremium ( Lower Cretaceous )
133.1 to 129.4 million years
Locations
Systematics
Dinosaur (dinosauria)
Lizard dinosaur (Saurischia)
Sauropods (Sauropoda)
Eusauropoda
Aragosaurus
Scientific name
Aragosaurus
Sanz et al., 1987
Art
  • Aragosaurus ischiaticus

Aragosaurus ("Lizard of Aragón") is a little-known genus of sauropod dinosaur from the Lower Cretaceous ( Upper Hauterivium to Lower Barremium ) of Spain . So far, only a fragmentary skull-less skeleton is known from the Castellar Formation in the Spanish province of Teruel . Aragosaurus wasscientifically described for the first timein 1987 by José Luis Sanz and colleagues with the only species Aragosaurus ischiaticus .

Aragosaurus is named after the autonomous Spanish region of Aragon (Spanish: Aragón). The second part of the species name, ischiaticus ( ischium - ischium ), points to the particularly large pubis crest of the ischium .

validity

Differentiating it from other genera is difficult because this genus cannot be sufficiently defined by autapomorphies (unique characteristics). Upchurch and colleagues (2004) therefore state that the validity of Aragosaurus is only provisional.

Systematics

Sanz and colleagues (1987) classify Aragosaurus as a member of the Camarasauridae . However, Upchurch and colleagues (2004) come to the conclusion that Aragosaurus must be classified as Eusauropoda incertae sedis (Eusauropod with uncertain assignment). Some other recent studies attribute Aragosaurus to the Titanosauriformes .

Find

The only findings include caudal vertebrae , chevron bones , shoulder blades , thigh bones (femur) and finger bones (phalanges) with a claw, as well as the pelvic bones ischium and pubis .

literature

  • Philip D. Mannion, Jorge O. Calvo : Anatomy of the basal titanosaur (Dinosauria, Sauropoda) Andesaurus delgadoi from the mid-Cretaceous (Albian – early Cenomanian) Río Limay Formation, Neuquén Province, Argentina: implications for titanosaur systematics. In: Zoological Journal of the Linnean Society. Vol. 163, No. 1, 2011, ISSN  0024-4082 , pp. 155-181, doi : 10.1111 / j.1096-3642.2011.00699.x .
  • José L. Sanz, Ángela D. Buscalioni, María L. Casanovas, José V. Santafé: Dinosaurios del Cretácico inferior de Galve (Teruel, España). In: José L. Sanz: Geología y paleontología (Aarcosaurios) de los yacimientos de Galve (Teruel, Cretácico Inferior) y Tremp (Lerida, Cretácico Superior) (= Estudios Geológicos. Volume Extraordinario. ISSN  0367-0449 ). Museo Nacional de Ciencias Naturales, Madrid 1987, pp. 45-64, doi : 10.3989 / egeol.8743Extra625 .
  • Paul Upchurch , Paul M. Barrett , Peter Dodson : Sauropoda. In: David B. Weishampel , Peter Dodson, Halszka Osmólska (eds.): The Dinosauria . 2nd edition. University of California Press, Berkeley CA et al. 2004, ISBN 0-520-24209-2 , pp. 259-324.

Individual evidence

  1. ↑ a b c Upchurch et al. 2004 , p. 263
  2. ↑ a b c d Sanz et al. 1987 , pp. 60-61
  3. ↑ a b Upchurch et al. 2004 , p. 302
  4. ↑ Mannion and Calvo 2001 , p. 20