Echkar Formation

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Echkar Formation
Stratigraphic range: Late Albian-Cenomanian
~100–95  Ma
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Type Geological formation
Unit of Tegama Group
Underlies Farak Formation
Overlies Elrhaz Formation
Lithology
Primary Sandstone
Other Claystone
Location
Coordinates 17°54′N5°36′E / 17.9°N 5.6°E / 17.9; 5.6 Coordinates: 17°54′N5°36′E / 17.9°N 5.6°E / 17.9; 5.6
Approximate paleocoordinates 2°48′N0°24′E / 2.8°N 0.4°E / 2.8; 0.4
Region Agadez Region
CountryFlag of Niger.svg  Niger
Extent Iullemmeden Basin
Type section
Named forEchkar, Aderbissinat
Niger relief location map.jpg
Green pog.svg
Echkar Formation (Niger)

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

Contents

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
GenusSpeciesMaterialNotesImages
Aegyptosaurus A. baharijensis Aegyptosaurus LM.png
Araripesuchus A. rattoides
Araripesuchus patagonicus SEND.jpg
Bahariasaurus B. ingens Bahariasaurus ingens, like megaraptora.jpg
Carcharodontosaurus [3] C. iguidensis [4]
C. saharicus [2]
Carcharodontosaurus.png
Ceratodus C. sp. Ceratodus.jpg
Elaphrosaurus E. iguidiensis (=Theropoda indet.)Likely an indeterminate theropod. Elaphrosaurus.jpg
Elosuchus E. sp. Elosuchus BW.jpg
Fortignathus F. felixi
Inosaurus I. tedreftensis
Kaprosuchus K. saharicus
Kaprosuchus NT.jpg
Laganosuchus L. thaumastos
Laganosuchus thaumastos.jpg
Lepidotes L. sp. 2015 museum Le Havre Lepidotes.jpg
Onchopristis O. numida Onchopristis numidus 052013.JPG
Platyspondylus P. foureaui
Rebbachisaurus R. tamesnensis
R. sp.[ citation needed ]
Rebbachisaurus BW.jpg
Rugops R. primus
Rugops (cropped).png
Spinosaurus S. aegyptiacus
Spinosaurus aegyptiacus.png
?Stegosauria indet.No genus given. May not actually belong to Stegosauria.
Testudines indet.No genus given.

See also

Related Research Articles

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<span class="mw-page-title-main">Kem Kem Group</span>

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<span class="mw-page-title-main">Elrhaz Formation</span>

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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. 1 2 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