Elrhaz Formation
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| Elrhaz Formation | |
|---|---|
| Stratigraphic range: Aptian-Albian | |
 Outcrops of the formation | |
| 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, central Africa.
Its 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
Crocodyliformes
| crocodyliforms reported from the Elrhaz Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|
A. wegeneri[1] |
"nearly complete skull" - Sereno & Larsson (1999) |
|||||
|
A. minor[1] |
"nearly complete skull" - Sereno & Larsson (1999) |
|||||
Ornithischians
| Ornithischians reported from the Elrhaz Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|
L. arenatus[1] |
"Partial skull, fragmentary postcranial skeleton."[2] |
 | ||||
|
O. nigeriensis[1] |
"Skull and poscrania, second skeleton."[3] |
|||||
|
E. nigeriensis[1] |
"Femora."[4] |
|||||
Saurischians
| Saurischians reported from the Elrhaz Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|
E. dinops[5] |
"Partial skull and postcranial remains."[6] |
Carcharodontosaurid |
 | |||
|
E. iguidensis[1] |
||||||
|
N. taqueti[1] |
Sauropod | |||||
|
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] | ||||
|
K. Palaios[1] |
Postcranial skeleton and partial skull.[9] |
Abelisaurid | ||||
See also
Footnotes
- ^ a b c d e f g h i j k l m n o p q r s "68.1 Departement D'Agedez, Niger; 1. Elrhaz Formation," in Weishampel, et al. (2004). Page 572.
- ^ "Table 19.1," in Weishampel, et al. (2004). Page 416.
- ^ "Table 19.1," in Weishampel, et al. (2004). Page 417.
- ^ "Table 19.1," in Weishampel, et al. (2004). Page 415.
- ^ 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.
- ^ "Table 4.1," in Weishampel, et al. (2004). Page 73.
- ^ "Table 4.1," in Weishampel, et al. (2004). Page 72.
- ^ Rauhut, O.W.M. (2003). "The interrelationships and evolution of basal theropod dinosaurs". Special Papers in Palaeontology 69: 1-213.
- ^ "Table 4.1," in Weishampel, et al. (2008). Page 72.
References
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
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