Ankazomihaboka Formation Explained

Ankazomihaboka Formation
Type:	Geological formation
Age:	Coniacian ~
Period:	Coniacian
Prilithology:	Claystone, sandstone
Region:	Boeny, Mahajanga Province
Coordinates:	-16.2°N 46.7°W
Paleocoordinates:	-34.9°N 37.8°W
Underlies:	Marovoay Beds
Overlies:	Basalt
Extent:	Mahajanga Basin

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]

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

Fossil content

• "Titanosaurus" madagascariensis
• Majungasaurus crenatissimus (theropod indet.)
• Axelrodichthys sp.^[1]
• Ceratodus madagascariensis^[1]

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with few dinosaur genera
• List of fossiliferous stratigraphic units in Madagascar
• Geology of Madagascar

References

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

Notes and References

1. https://paleobiodb.org/classic/displayCollResults?collection_no=46897 MAD 96
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. . " Pp. 517-607.