Elrhaz Formation

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Elrhaz Formation
Stratigraphic range: Aptian-Albian
Type Geological formation
Unit of Tegama Group
Underlies Echkar Formation
Overlies Tazolé Formation
Location
Country  Niger

The Elrhaz Formation is a geological formation in Niger whose strata date back to the Early Cretaceous (late Aptian-early Albian stages, about 112 million years ago). Dinosaur remains are among the fossils that have been recovered from the formation.

Vertebrate paleofauna[edit]

Ornithischians[edit]

Ornithischians reported from the Elrhaz Formation
Genus Species Location Stratigraphic position Material Notes Images

Lurdusaurus[1]

L. arenatus[1]

"Partial skull, fragmentary postcranial skeleton."[2]

Ouranosaurus[1]

O. nigeriensis[1]

"Skull and poscrania, second skeleton."[3]

Elrhazosaurus[1]

E. nigeriensis[1]

"Femora."[4]

Saurischians[edit]

Saurischians reported from the Elrhaz Formation
Genus Species Location Stratigraphic position Material Notes Images

Eocarcharia[1]

E. dinops[5]

"Partial skull and postcranial remains."[6]

Carcharodontosaurid

Elaphrosaurus[1]

E. iguidensis[1]

Nigersaurus[1]

N. taqueti[1]

Sauropod

Suchomimus[1]

S. tenerensis[1]

Partial skull and associated skeleton.[7]

A second, possible spinosaurid found in the formation, Cristatusaurus, is considered either a separate species or a synonym to Suchomimus[8]

Kryptops[1]

K. Palaios[1]

Postcranial skeleton and partial skull.[7]

Abelisaurid

See also[edit]

Footnotes[edit]

  1. ^ a b c d e f g h i j k l m n o "68.1 Departement D'Agedez, Niger; 1. Elrhaz Formation," in Weishampel, et al. (2004). Page 572.
  2. ^ "Table 19.1," in Weishampel, et al. (2004). Page 416.
  3. ^ "Table 19.1," in Weishampel, et al. (2004). Page 417.
  4. ^ "Table 19.1," in Weishampel, et al. (2004). Page 415.
  5. ^ Sereno, Paul C.; and Brusatte, Stephen L. (2008). "Basal abelisaurid and carcharodontosaurid theropods from the Lower Cretaceous Elrhaz Formation of Niger" (pdf). Acta Palaeontologica Polonica 53 (1): 15–46. doi:10.4202/app.2008.0102.
  6. ^ "Table 4.1," in Weishampel, et al. (2004). Page 73.
  7. ^ a b "'Table 4.1," in Weishampel, et al. (2004). Page 72.
  8. ^ Rauhut, O.W.M. (2003). "The interrelationships and evolution of basal theropod dinosaurs". Special Papers in Palaeontology 69: 1-213.

References[edit]

  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.