Echkar Formation
Stratigraphic range: Late Albian-Cenomanian
~100–95 Ma
↓
TypeGeological formation
Unit ofTegama Group
UnderliesFarak Formation
OverliesElrhaz Formation
Lithology
PrimarySandstone
OtherClaystone
Location
Coordinates17°54′N 5°36′E / 17.9°N 5.6°E / 17.9; 5.6
Approximate paleocoordinates2°48′N 0°24′E / 2.8°N 0.4°E / 2.8; 0.4
RegionAgadez Region
Country Niger
ExtentIullemmeden Basin
Type section
Named forEchkar, Aderbissinat
Echkar Formation is located in Niger
Echkar Formation
Echkar Formation (Niger)

The Echkar Formation is a geological formation comprising sandstones and claystones in the Agadez Region of Niger, central Africa.

Description

Its strata date back to the Late Albian to Late Cretaceous (Cenomanian stages, about 100-95 million years ago). Dinosaur remains are among the fossils that have been recovered from the formation.[1]

Fossil content

[2]

Vertebrates

Archosaurs
Genus Species Material Notes Images
Aegyptosaurus A. baharijensis
Araripesuchus A. rattoides
Bahariasaurus B. ingens
Carcharodontosaurus[3] C. iguidensis[4]
C. saharicus[2]
Ceratodus C. sp.
Elaphrosaurus E. iguidiensis (=Theropoda indet.) Likely an indeterminate theropod.
Elosuchus E. sp.
Fortignathus F. felixi
Inosaurus I. tedreftensis
Kaprosuchus K. saharicus
Laganosuchus L. thaumastos
Lepidotes L. sp.
Onchopristis O. numida
Platyspondylus P. foureaui
Rebbachisaurus R. tamesnensis
R. sp.[citation needed]
Rugops R. primus
Spinosaurus S. aegyptiacus
?Stegosauria indet. No genus given. May not actually belong to Stegosauria.
Testudines indet. No genus given.

See also

References

  1. ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Africa)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 571-573. ISBN 0-520-24209-2.
  2. ^ a b In Abangarit-Tamesna at Fossilworks.org
  3. ^ Brusatte, S. and Sereno, P.C. (2005). "A new species of Carcharodontosaurus (Dinosauria: Theropoda) from the Cenomanian of Niger and its implications for allosauroid phylogeny." Journal of Vertebrate Paleontology, 25: 40A.
  4. ^ Brusatte, S.L. and Sereno, P.C. (2007). "A new species of Carcharodontosaurus (dinosauria: theropoda) from the Cenomanian of Niger and a revision of the genus." Journal of Vertebrate Paleontology, 27(4)

Bibliography

Further reading

Categories