Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

A. A. Khan ¹, A. Sonakia ¹

Affiliations
1 255-A, B. D. A. Colony, Shahpura, Bhopal (M. P.), IN

Abstract

The upper 70 m to 90 m of the Narmada alluvium was deposited in a single aggradational episode with minor pauses when dissection of the alluvium produced two terraces (NT₃-NT₂). The sediments of this aggradation episode constitute three lithostratigraphic units viz., Boulder conglomerate, Sohagpur and Shahganj Fomations. The sediments of the alluvial phase are underlain by a boulder bed of glacio-fluvial origin. Thus, the fossiliferous boulder conglomerate, the basal unit of the alluvium marks a disconformity between the lower glacio-fluvial boulder layer and the upper fluvial sediments. The fossiliferous basal boulder conglomerate is considered to be of middle Pleistocene age.

Keywords

Quaternary, Narmada Alluvium, Hominid Fossils.

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S. Biswas ¹, A. Sonakia ¹, Y. Sitaramaiah ¹

Affiliations
1 Geological Survey of India, Nagpur - 440 006, IN

Abstract

An extinct species of Equidae, Equus namadicus, is known from the Quaternary alluvial sediments of Narmada valley of central India since the nineteenth century. However, the type skull of the species now in the Natural History Museum of London has never been described systematically. One more skull recovered from the Middle Pleistocene deposits of the same area has been identified as that of E.namadicus and is designated here as paratype of the species. It is one of the largest species of Equus and larger than other Indian species of the genus. Study shows that some specimens of Equus from the Lower Pleistocene deposits of the Siwaliks may be assigned to E. namadicus.

Keywords

Equus namadicus, Skull, Quaternary, Narmada.

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