Upper Maleri Formation, Geological formation in Andhra Pradesh, India.
The Upper Maleri Formation is a rock layer in the Pranhita-Godavari Basin made up of mudstone and calcareous sandstone deposited over time. These strata reveal that the region once experienced shifting water environments, from river channels to shallow lakes.
This rock layer dates to the Late Triassic period, roughly 200 to 210 million years ago, during the Norian to early Rhaetian ages. It records a phase of major sediment buildup in this ancient basin.
Scientists from multiple nations conduct research at this formation to study the evolution of early dinosaurs and other prehistoric species.
Access to the formation is limited to designated research areas requiring permits from Indian geological authorities. Visitors should come prepared with appropriate gear and local guides, as this is an active research site with challenging terrain.
The formation holds fossils of Jaklapallisaurus, an early dinosaur, alongside various ancient reptiles like phytosaurs and aetosaurs. This mix of species helps scientists understand how animal life evolved during this distant period.
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