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Intertrappean Beds

Intertrappean Beds
Stratigraphic range: Maastrichtian-Ypresian, 67.7–56 Ma
TypeUnit
Unit ofDeccan Traps
OverliesInfratrappean Beds
Location
Coordinates17°12′N 77°54′E / 17.2°N 77.9°E / 17.2; 77.9
Approximate paleocoordinates28°00′S 59°00′E / 28.0°S 59.0°E / -28.0; 59.0
RegionMadhya Pradesh, Maharashtra, Telangana, Gujarat, Uttar Pradesh, Andhra Pradesh, Karnataka[1]
CountryIndia
Intertrappean Beds is located in India
Intertrappean Beds
Intertrappean Beds (India)

The Intertrappean Beds are a Late Cretaceous and early Paleogene geologic unit in India. These beds are found as interbeds between Deccan Traps layers, including the slightly older Lameta Formation. They consist a number of different subgroups and formations, and span the Cretaceous–Paleogene boundary.[2][1]

Many mostly fragmentary fossils, especially of small vertebrates, are known from the formation.[3] Indeterminate theropod and pterosaur remains have been recovered from the formation, as well as dinosaur eggs.[4][5] The mammal genera Deccanolestes, Sahnitherium, Bharattherium, Indoclemensia, Indotriconodon and Kharmerungulatum have been recovered from several localities.[6] The Early Eocene-aged[7] Bamanbor locality in Gujarat preserves articulated freshwater fish specimens.[8][9] A rich plant flora is known from the formation.

  1. ^ a b Wilson Mantilla, Gregory P.; Renne, Paul R.; Samant, Bandana; Mohabey, Dhananjay M.; Dhobale, Anup; Tholt, Andrew J.; Tobin, Thomas S.; Widdowson, Mike; Anantharaman, S.; Dassarma, Dilip Chandra; Wilson Mantilla, Jeffrey A. (2022-04-01). "New mammals from the Naskal intertrappean site and the age of India's earliest eutherians". Palaeogeography, Palaeoclimatology, Palaeoecology. 591: 110857. Bibcode:2022PPP...59110857W. doi:10.1016/j.palaeo.2022.110857. ISSN 0031-0182.
  2. ^ Khosla, Ashu; Verma, Omkar; Kania, Sachin; Lucas, Spencer (2023). "Microbiota from the Late Cretaceous-Early Palaeocene Boundary Transition in the Deccan Intertrappean Beds of Central India". Topics in Geobiology. 54. doi:10.1007/978-3-031-28855-5. ISBN 978-3-031-28854-8. ISSN 0275-0120.
  3. ^ Prasad, Guntupalli V.R.; Sahni, Ashok (2014), "Vertebrate fauna from the Deccan volcanic province: Response to volcanic activity", Volcanism, Impacts, and Mass Extinctions: Causes and Effects, Geological Society of America, doi:10.1130/2014.2505(09), ISBN 978-0-8137-2505-5, retrieved 2024-04-03
  4. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  5. ^ Barrett, P.M; Edwards, N.P.; Milner, A.R.; Butler, R.J., "Pterosaur distribution in time and space: an atlas." (PDF), Flugsaurier: Pterosaur Papers in Honour of Peter Wellnhofer. 2008. Hone, D.W.E., and Buffetaut, E. (Eds). Zitteliana B, 28. 264pp.
  6. ^ "MESOZOIC MAMMALS; Basal Eutheria Two, an internet directory". Archived from the original on 2011-06-07. Retrieved 2008-05-04.
  7. ^ Shah, Nishi H.; Patel, Satish J. (2024-12-01). "A new superfamily of freshwater mussels Deccanoidea nov. (Mollusca: Unionida) from an intertrappean deposit of Saurashtra province (Gujarat state, western India): An example of disjunct distribution". Journal of the Palaeontological Society of India. 69 (2): 121–146. doi:10.1177/05529360241269345. ISSN 0552-9360.
  8. ^ Cite error: The named reference :12 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference :13 was invoked but never defined (see the help page).
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