The fossilized skull of Narmada Homo erectus was found embedded in a conglomerate bed in the Narmada valley of central India. This bed occurs at the basal part of a formation sandwiched between two other formations of 0.73 Ma and 74000 yrs BP. The conglomerate bed has also preserved fossils of Hipopotamus namadicus, etc having Middle Pleistocene affinity.
Original Source [2]
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/antiquity-narmada-homo-erectus-early-man-india
[2] http://www.currentscience.ac.in/Downloads/article_id_075_04_0391_0393_0.pdf
[3] http://admin.indiaenvironmentportal.org.in/category/author/arun-sonakia
[4] http://admin.indiaenvironmentportal.org.in/category/author/s-biswas
[5] http://admin.indiaenvironmentportal.org.in/category/journal/current-science
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fossils
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/life-science
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india