Also known as Intertrappean Beds Rangapur

Where: Andhra Pradesh, India (17.2° N, 77.9° E: paleocoordinates 28.1° S, 59.0° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• Upper Cretaceous continental sediments are exposed along the perimeter of the Deccan Traps in peninsular India. The thick sequences stratigraphically below the Deccan basalts and usually deposited on Archaean granite (peninsular gneiss complex) of Gondwana Group are known as Infratrappean (=Lameta Formation) beds. They are generally considered fluvio-lacustrine coastal plain deposits (Mohabey & Udhoji 1993). The thin (1-5 m) sediminstary beds between basal flows are known as Intertrappean (=Takli Formation) beds. These sedimentary beds are generally considered to have formed by the sudden blocking of the drainage system immediately after the eruption of the Deccan volcanic basalt, resulting in the formation of enclosed basins, separated by interfluvial divides (Rana 1990a). Both the Infra- and Intertrappean beds under study are considered Maastrichtian in age on paleontological, geochronological, and paleomagnetic data (see Khajuria et al 1994 for a review).

•The fossiliferous units are situated between salt flows 4 and 5 (sensu Dutt 1975).

•Deccan II phase.

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine; black, brown marl and gray, white marl

Size classes: macrofossils, mesofossils

Collected by R. S. Rana in 1986, 1995-1998

Collection methods: bulk, sieve,

• ITV/R collection: Intertrappean vertebrates/Rangapur in the Department of Geology, HNB Garhwal University, Srinigar, Uttaranchal, India

Primary reference: R. S. Rana. 1990. Palaeontology and palaeoecology of the Intertrappean (Cretaceous-Tertiary transition) beds of the peninsular India. Journal of the Palaeontological Society of India 35:105-120 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122240: authorized by Roger Benson, entered by Roger Benson on 19.12.2011, edited by Philip Mannion, Matthew Carrano and Grace Varnham

Creative Commons license: CC BY (attribution)