The Intertrappean Beds are a Late Cretaceous and Early Paleocene geologic formation in India. The beds are found as interbeds between Deccan Traps layers, including the slightly older Lameta Formation . The formation spans the Cretaceous–Paleogene boundary , with a stratigraphic range of only a few hundred thousand years before and after the boundary, and a significant debate exists about whether specific sites belong to the Cretaceous or the Paleocene.[ 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 Bamanbor locality in Gujarat preserves articulated freshwater fish specimens.[ 7] [ 8] A rich plant flora is known from the formation.
Color key
Notes Uncertain or tentative taxa are in small text ; crossed out taxa are discredited.
Genus
Species
Location
Stratigraphic position
Material
Notes
Images
Carteremys
C. leithii
Worli Hill
Carapace, plastron, skull and partial mandible
A turtle of uncertain affinities.
Sankuchemys
S. sethnai
Amboli Quarry[ 19]
Skull[ 19]
A bothremydid turtle.
Genus
Species
Location
Stratigraphic position
Material
Notes
Images
Connaroxylon
C. dimorphum
Dhagaon, Mandla district [ 30]
Wood[ 30]
Affinities with Connaraceae .
Euphorbiotheca
E. deccanensis
Fruit, member of Euphorbiaceae .[ 31]
Hyphaeneocarpon
Fruit, member of palm tribe Borasseae .[ 32]
Palmocarpon
Fruit, member of palm tribe Cocoseae .[ 33]
Palmoxylon
P. dindoriensis
Wood, member of palm subfamily Coryphoideae .[ 34]
Pantocarpon
Fruit, member of Torricelliaceae .[ 35]
Phyllanthocarpon
P. singpurensis
Fruit, member of Phyllanthaceae .[ 36]
Rhizopalamoxylon
Palm rhizome, close affinities to Nypa .[ 37]
Pediastrum
Algae .[ 38]
Lecaniella
Algae .[ 38]
Pierceites
P. deccanensis
A Dinocyst .[ 38]
Aulacoseira
A Diatom .[ 38]
Azolla
Member of Salviniaceae .[ 38]
Crybelosporites
Member of Marsileaceae .[ 38]
Sparganiaceaepollenites
Pollen grains , Member of [ 38] Sparganiaceae /Typhaceae .
Marsilea
Member Marsileaceae .[ 38]
Regnellidium
Member of Marsileaceae .[ 38]
Nymphaeaceae indet.[ 38]
Typhaceae indet.[ 38]
Liliaceae indet.[ 38]
Acanthaceae indet.[ 38]
Pontederiaceae indet.[ 38]
Ovoidites
Member of Zygnemataceae .[ 38]
Gabonisporis
Pollen grains, member of Marsileaceae .[ 38]
^ a b c d 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 .
^ 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 .
^ a b c d e f g h i 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
^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
^ a b 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.
^ "MESOZOIC MAMMALS; Basal Eutheria Two, an internet directory" . Archived from the original on 2011-06-07. Retrieved 2008-05-04 .
^ a b c d Borkar, V. D. (1973-10-01). "Fossil fishes from the Inter-trappean beds of Surendranagar District, Saurashtra" . Proceedings / Indian Academy of Sciences . 78 (4): 181–193. doi :10.1007/BF03045500 . ISSN 0370-0097 .
^ a b c Arratia, G; López-Arbarello, A; Prasad, GVR; Parnar, V; Kriwet, J (2004), Arratia, G; Wilson, MVH; Cloutier, R (eds.), "Late Cretaceous-Paleocene percomorphs (Teleostei) from India - Early radiation of Perciformes" , Recent advances in the origin and early radiation of vertebrates , Verlag Dr. Friedrich Pfeil, München, Germany, pp. 635–655, ISBN 978-3-89937-052-2 , retrieved 2024-04-03
^ Bellamy, C. L. (2013). "Fossil Buprestidae" . A Checklist of World Buprestoidea . Retrieved 7 Sep 2021 .
^ a b c d e f g h i j k l m n Prasad, G. V. R. (1989-08-01). "Vertebrate Fauna From the Infra- and Inter-trappean Beds of Andhra Pradesh: Age Implications" . Geological Society of India . 34 (2): 161–173. ISSN 0974-6889 .
^ "Mineralienatlas - Fossilienatlas" . www.mineralienatlas.de . Retrieved 2024-03-07 .
^ a b c Verma, Omkar; Khosla, Ashu; Kaur, Jasdeep; Prashanth, M. (2017-02-17). "Myliobatid and pycnodont fish from the Late Cretaceous of Central India and their paleobiogeographic implications" . Historical Biology . 29 (2): 253–265. Bibcode :2017HBio...29..253V . doi :10.1080/08912963.2016.1154954 . ISSN 0891-2963 .
^ a b c d e f g Khosla, A.; Prasad, G. V. R.; Verma, O.; Jain, A. K.; Sahni, A. (2004-08-10). "Discovery of a micromammal-yielding Deccan intertrappean site near Kisalpuri, Dindori District, Madhya Pradesh" (PDF) . Current Science . 87 (3): 380–383. ISSN 0011-3891 .
^ a b c d e Lourembam, Ranjit Singh; Prasad, Guntupalli V. R.; Grover, Pooja (2017). "Ichthyofauna (Chondrichthyes, Osteichthyes) from the Upper Cretaceous intertrappean beds of Piplanarayanwar, Chhindwara District, Madhya Pradesh, India" . Island Arc . 26 (1). Bibcode :2017IsArc..26E2180L . doi :10.1111/iar.12180 . ISSN 1038-4871 .
^ a b c Friedman, Matt; V. Andrews, James; Saad, Hadeel; El-Sayed, Sanaa (2023-06-16). "The Cretaceous–Paleogene transition in spiny-rayed fishes: surveying "Patterson's Gap" in the acanthomorph skeletal record André Dumont medalist lecture 2018" . Geologica Belgica . doi :10.20341/gb.2023.002 . ISSN 1374-8505 .
^ Nolf, Dirk; Rana, R. S.; Prasad, G. V. R. (2008). "Late Cretaceous (Maastrichtian fish otoliths from the Deccan Intertrappean Beds, India: a revision" . Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre . 78 : 239–259.
^ a b c d e f g h i j k l m Rage, Jean-Claude; Prasad, Guntupalli V. R.; Verma, Omkar; Khosla, Ashu; Parmar, Varun (2020), Prasad, Guntupalli V.R.; Patnaik, Rajeev (eds.), "Anuran Lissamphibian and Squamate Reptiles from the Upper Cretaceous (Maastrichtian) Deccan Intertrappean Sites in Central India, with a Review of Lissamphibian and Squamate Diversity in the Northward Drifting Indian Plate" , Biological Consequences of Plate Tectonics: New Perspectives on Post-Gondwana Break-up–A Tribute to Ashok Sahni , Cham: Springer International Publishing, pp. 99–121, doi :10.1007/978-3-030-49753-8_6 , ISBN 978-3-030-49753-8 , retrieved 2024-04-03
^ Noble, G. K. (1930-02-08). "The fossil frogs of the intertrappean beds of Bombay, India" . American Museum Novitates (401): 1–13. hdl :2246/3061 .
^ a b Gaffney, Eugene S. (2003). Sankuchemys, a new side-necked turtle (Pelomedusoides, Bothremydidae) from the late Cretaceous of India . New York, NY: American Museum of Natural History.
^ a b Anantharaman, S.; DeMar, David G.; Sivakumar, R.; Dassarma, Dilip Chandra; Wilson Mantilla, Gregory P.; Wilson Mantilla, Jeffrey A. (2022-06-30). "First rhynchocephalian (Reptilia, Lepidosauria) from the Cretaceous–Paleogene of India" . Journal of Vertebrate Paleontology . 42 (1). Bibcode :2022JVPal..42E8059A . doi :10.1080/02724634.2022.2118059 . ISSN 0272-4634 .
^ a b Yadav, Ravi; Bajpai, Sunil; Maurya, A.S.; Čerňanský, Andrej (June 2023). "The first potential cordyliform (Squamata, Scincoidea) from India (uppermost Cretaceous – lowermost Paleocene): an African lizard clade brings possible implications for Indo-Madagascar biogeographic links" . Cretaceous Research . 150 : 105606. Bibcode :2023CrRes.15005606Y . doi :10.1016/j.cretres.2023.105606 .
^ a b c d Rage, Jean-Claude; Prasad, Guntupalli V. R. (November 1992). "New snakes from the late Cretaceous (Maastrichtian) of Naskal, India" . N. Jb. Geol. Palaeont. Abh . 187 (1): 83–97. doi :10.1127/njgpa/187/1992/83 .
^ a b Prasad, Guntupalli V. R; de Lapparent de Broin, France (2002-01-01). "Late Cretaceous crocodile remains from Naskal (India): comparisons and biogeographic affinities" . Annales de Paléontologie . 88 (1): 19–71. Bibcode :2002AnPal..88...19P . doi :10.1016/S0753-3969(02)01036-4 . ISSN 0753-3969 .
^ Khosla, Ashu; Sertich, Joseph J. W.; Prasad, Guntupalli V. R.; Verma, Omkar (2009-12-12). "Dyrosaurid remains from the Intertrappean Beds of India and the Late Cretaceous distribution of Dyrosauridae" . Journal of Vertebrate Paleontology . 29 (4): 1321–1326. Bibcode :2009JVPal..29.1321K . doi :10.1671/039.029.0416 . ISSN 0272-4634 .
^ Weishampel, David B. (1990). "Dinosaur distribution". In David B. Weishampel; Peter Dodson; Halszka Osmólska (eds.). The Dinosauria (1st ed.). Berkeley: University of California Press. pp. 63–139. ISBN 978-0-520-06727-1 .
^ Pentland, Adele H.; Poropat, Stephen F. (2023-07-01). "A review of the Jurassic and Cretaceous Gondwanan pterosaur record" . Gondwana Research . 119 : 341–383. Bibcode :2023GondR.119..341P . doi :10.1016/j.gr.2023.03.005 . ISSN 1342-937X .
^ Bajpai, Sunil; Rautela, Abhay; Yadav, Ravi; Mantilla, Gregory P. Wilson (29 February 2024). "The first eutriconodontan mammal from the Cretaceous (Maastrichtian) of India". Journal of Vertebrate Paleontology . 43 (4). doi :10.1080/02724634.2024.2312234 .
^ Prasad, G. V. R.; Verma, O.; Sahni, A.; Parmar, V.; Khosla, A. (2007-11-09). "A Cretaceous Hoofed Mammal from India" . Science . 318 (5852): 937. Bibcode :2007Sci...318..937P . doi :10.1126/science.1149267 . ISSN 0036-8075 . PMID 17991854 .
^ Rana, Rajendra S.; Wilson, Gregory P. (2003). "New Late Cretaceous mammals from the Intertrappean beds of Rangapur, India and paleobiogeographic framework" . Acta Palaeontologica Polonica . 48 (3): 331–348.
^ a b Baas, Pieter; Manchester, Steven R.; Wheeler, Elisabeth A.; Srivastava, Rashmi (2017-02-13). "Fossil wood with dimorphic fibers from the Deccan Intertrappean Beds of India – the oldest fossil Connaraceae?" . IAWA Journal . 38 (1): 124–133. doi :10.1163/22941932-20170162 . ISSN 0928-1541 . S2CID 91159009 .
^ Reback, Rachel G.; Kapgate, Dashrath K.; Wurdack, Ken; Manchester, Steven R. (2022-02-01). "Fruits of Euphorbiaceae from the Late Cretaceous Deccan Intertrappean Beds of India" . International Journal of Plant Sciences . 183 (2): 128–138. doi :10.1086/717691 . ISSN 1058-5893 . S2CID 239507275 .
^ Matsunaga, Kelly K S; Manchester, Steven R; Srivastava, Rashmi; Kapgate, Dashrath K; Smith, Selena Y (2019-06-21). "Fossil palm fruits from India indicate a Cretaceous origin of Arecaceae tribe Borasseae" . Botanical Journal of the Linnean Society . 190 (3): 260–280. doi :10.1093/botlinnean/boz019 . ISSN 0024-4074 .
^ Manchester, Steven R.; Bonde, Suresh D.; Nipunage, Dinesh S.; Srivatava, Rashmi; Mehrotra, Rakesh C.; Smith, Selena Y. (2016-07-19). "Trilocular Palm Fruits from the Deccan Intertrappean Beds of India" . International Journal of Plant Sciences . 177 (7): 633–641. doi :10.1086/687290 . ISSN 1058-5893 . S2CID 88667232 .
^ Khan, Mahasin Ali; Roy, Kaustav; Hazra, Taposhi; Mahato, Sumana; Bera, Subir (2020-01-01). "A New Coryphoid Palm from the Maastrichtian-Danian Sediments of Madhya Pradesh and its Palaeoenvironmental Implications" . Journal of the Geological Society of India . 95 (1): 75–83. Bibcode :2020JGSI...95...75K . doi :10.1007/s12594-020-1388-1 . ISSN 0974-6889 . S2CID 210134584 .
^ Manchester, Steven R.; Kapgate, Dashrath K.; Patil, Sharadkumar P.; Ramteke, Deepak; Matsunaga, Kelly K.S.; Smith, Selena Y. (2019-10-23). "Morphology and Affinities of Pantocarpon Fruits (cf. Apiales: Torricelliaceae) from the Maastrichtian Deccan Intertrappean Beds of Central India" . International Journal of Plant Sciences . 181 (4): 443–451. doi :10.1086/706856 . ISSN 1058-5893 .
^ Kapgate, Dashrath; Manchester, Steven R.; Stuppy, Wolfgang (2017-06-01). "Oldest fruit of Phyllanthaceae from the Deccan Intertrappean Beds of Singpur, Madhya Pradesh, India" (PDF) . Acta Palaeobotanica . 57 (1): 33–38. doi :10.1515/acpa-2017-0004 . ISSN 2082-0259 .
^ Kathal, P. K.; Srivastava, Rashmi; Mehrotra, R. C.; Alexander, P. O. (2017-03-29). "Rhizopalmoxylon nypoides – a new palm root from the Deccan Intertrappean beds of Sagar, Madhya Pradesh, India" . Journal of Earth System Science . 126 (3): 35. Bibcode :2017JESS..126...35K . doi :10.1007/s12040-017-0815-1 . ISSN 0973-774X .
^ a b c d e f g h i j k l m n o p Samant, Bandana; Puranik, Sumedha; Kapgate, D. K.; Mohabey, D. M.; Dhobale, Anup (2022-11-01). "Palynoflora from an Upper Cretaceous freshwater paleolake in central India: paleoecological implications" . Cretaceous Research . 139 : 105302. Bibcode :2022CrRes.13905302S . doi :10.1016/j.cretres.2022.105302 . ISSN 0195-6671 .
Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2 .