Ankazomihaboka Formation

The Ankazomihaboka Formation is a Coniacian geologic formation in the Mahajanga Basin of northwestern Madagascar. The formation comprises claystones and sandstones deposited in a fluvial to lacustrine environment.[1] The formation is overlain by the Marovoay Beds and overlies basalt.[2]

Ankazomihaboka Formation
Stratigraphic range: Coniacian
~89–86 Ma
TypeGeological formation
UnderliesMarovoay Beds
OverliesBasalt
Lithology
PrimaryClaystone, sandstone
Location
Coordinates16.2°S 46.7°E / -16.2; 46.7
Approximate paleocoordinates34.9°S 37.8°E / -34.9; 37.8
RegionBoeny, Mahajanga Province
Country Madagascar
ExtentMahajanga Basin
Location of the formation in Madagascar

Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.[3]

Fossil content

See also

References

  1. MAD 96 at Fossilworks.org
  2. Rogers et al., 2000, p.280
  3. Weishampel, et al. (2004). "Dinosaur distribution" Pp. 517-607. in Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2. " Pp. 517-607.

Bibliography

Further reading

  • Curry, K. A. 1997. Vertebrate fossils from the Upper Cre-taceous Ankazomihaboka Sandstones, Mahajanga Ba-sin, Madagascar. J. Vertebr. Paleontol. 17(suppl.):40A
  • M. D. Gottfried, R. R. Rogers, and K. A. Curry Rogers. 2004. First record of Late Cretaceous coelacanths from Madagascar. Recent Advances in the Origin and Early Radiation of Vertebrates, in G. Arratia, M. V. H. Wilson, and R. Cloutier (eds.), Verlag Dr. Friedrich Pfeil, München 687-691
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