Rangapur microvertebrate site: Late/Upper Maastrichtian, India
collected by R. S. Rana 1986, 1995-1998

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Osteoglossum deccanensis
Anthracoperca bhatiai
Kapur and Khosla 2019
Mulleripollis bolpurensis
Wilson Mantilla et al. 2022
Incrotonipollis neyvelii
Wilson Mantilla et al. 2022
Pteridopsida
Cyathidites australis Couper 1953
Wilson Mantilla et al. 2022
Angiospermae - Poales - Typhaceae
Sparganiaceaepollenites sp. Thiergart 1937
Wilson Mantilla et al. 2022
Chondrichthyes - Myliobatiformes - Myliobatidae
Igdabatis sigmodon Cappetta 1972
Chondrichthyes - Myliobatiformes - Rhombodontidae
Rhombodus levis (Cappetta and Case 1975)
Chondrichthyes - Myliobatiformes - Dasyatidae
Dasyatis sp. Rafinesque 1810
Osteichthyes
Osteichthyes indet. Huxley 1880
Rana 2000
Amphibia - Temnospondyli
Pelobatidae indet. Lataste 1879
    = Lissamphibia indet. Haeckel 1866
Rana 2000
Mammalia
Theria indet. Parker and Haswell 1897
Rana and Wilson 2003 6 specimens
ITV/R/Mm-5 (right P3); Mm-19 (left p3 or p4); Mm-13 (right p3 or p4); Mm-14 (left p1 or p2); Mm-15 (right p1 or p2); Mm-17 (right p1)
Sahnitherium rangapurensis n. gen., n. sp. Rana and Wilson 2003
Rana and Wilson 2003 1 specimen
ITV/R/Mm-1 (holotype right upper molar M1 or M2)
Mammalia - Adapisoriculidae
? Deccanolestes sp. Prasad and Sahni 1988
Rana and Wilson 2003 2 specimens
ITV/R/Mm-9 (left m1 or m2); Mm-8 (right m1 or m2)
Deccanolestes cf. robustus Prasad et al. 1994
Rana and Wilson 2003 1 specimen
ITV/R/Mm-6 (right m1 or m2)
? Deccanolestes hislopi Prasad and Sahni 1988
5 specimens
    = Deccanolestes cf. hislopi Prasad and Sahni 1988
Rana and Wilson 2003
ITV/R/Mm-2 (right M2), Mm-7 (right m1 or m2); Mm-10 (right m1 or m2); Mm-11 (left m3); Mm-12 (right m3)
Reptilia - Testudines
Pelomedusidae indet. Cope 1868
    = Chelonioidea indet. Baur 1893
Rana 2000
Reptilia
Boidae indet. Gray 1825
    = Serpentes indet. Linnaeus 1758
Rana 2000
Reptilia - Scincidae
Eumeces sp. Wiegmann 1834
Rage et al. 2020
Reptilia - Agamidae
Agama sp. Daudin 1802
Rage et al. 2020
Reptilia - Anguidae
Anguidae indet. Gray 1825
Reptilia - Crocodyliformes
? Brachychampsa sp. Gilmore 1911
Teeth
    = Alligatorinae indet. Cuvier 1807
Rana 2000
    = Crocodyliformes indet. Hay 1930
Rio and Mannion 2021
Crocodilus sp. (Laurenti 1768)
49 specimens
ITV/R/Cr-151 to 200
    = Crocodyliformes indet. Hay 1930
Rio and Mannion 2021
Allognathosuchus sp. Mook 1921
Rana and Sati 2000 90 specimens
ITV/R/Cr-1 to 90
    = Crocodyliformes indet. Hay 1930
Rio and Mannion 2021
Asiatosuchus sp. Mook 1940
Rana and Sati 2000 2 specimens
ITV/R/Cr-91, 92
    = Crocodyliformes indet. Hay 1930
Rio and Mannion 2021
Thoracosaurus sp. Leidy 1852
Rana and Sati 2000 57 specimens
ITV/R/Cr-93 to 150
    = Crocodyliformes indet. Hay 1930
Rio and Mannion 2021
Actinopteri - Pycnodontiformes - Pycnodontidae
Pycnodus lametae Woodward 1908
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus indicus
Actinopteri - Osteoglossiformes - Notopteridae
Notopterus nolfi
Actinopteri - Osteoglossiformes - Osteoglossidae
Scleropages intertrappus
Actinopteri - Aulopiformes - Enchodontidae
Enchodus sp. Agassiz 1835
Enchodus ferox Leidy 1855
Actinopteri - Aulopiformes - Ichthyotringidae
Apateodus sp. Woodward 1901
Actinopteri - Tetraodontiformes - Eotrigonodontidae
Stephanodus lybicus (Zittel 1888)
Eotrigonodon sp. Weiler 1929
Actinopteri - Perciformes - Serranidae
Serranidae indet. Swainson 1839
Actinopteri - Ambassidae
Dapalis sp. Gistl 1848
Dapalis erici
Kapur and Khosla 2019
Actinopteri - Clupeiformes - Clupeoidei
Clupeidae indet. Cuvier 1817
see common names

Geography
Country:India State/province:Andhra Pradesh
Coordinates: 17.2° North, 77.9° East (view map)
Paleocoordinates:28.1° South, 59.0° East
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Late/Upper Maastrichtian
Age range of interval:70.60000 - 66.00000 m.y. ago
Age estimate:66.184 to 66.075 Ma (Ar/Ar)
Stratigraphy
Stratigraphic resolution:group of beds
Stratigraphy comments: 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.
Lithology and environment
Primary lithology:black,brown marl
Secondary lithology:gray,white marl
Includes fossils?Y
Includes fossils?Y
Lithology description: The fossiliferous units are situated between salt flows 4 and 5 (sensu Dutt 1975). The basal unit of this local Intertrappean sequence is a white marl bed (10.5 cm), which is overlain by black chert (10.0 cm) followed by black-brown marl (17.5 cm), black chert (10.0 cm), greenish-pink marl (12.5 cm), grey marl with whitish-grey cherty nodules (52.0 cm), and whitish-grey marl beds (42.5 cm) respectively. Fresh water ostracodes, charophytes, and molluscs were recovered from the white marl, black brown marl, and whitish-grey marl beds. Microvertebrates, including mammals, were recovered from the black-brown marl and whitish-grey marl beds (Rana 1988, 1990a,b).
Environment:fluvial-lacustrine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some microfossils
Collection methods:bulk,sieve,field collection
Reason for describing collection:taxonomic analysis
Collectors:R. S. Rana Collection dates:1986, 1995-1998
Collection method comments: ITV/R collection: Intertrappean vertebrates/Rangapur in the Department of Geology, HNB Garhwal University, Srinigar, Uttaranchal, India
Taxonomic list comments:Microvertebrate material includes remains from elasmobranchs, bony fish, amphibians, turtles, squamates, crocodiles, and mammals.
Metadata
Also known as:Intertrappean Beds Rangapur
Database number:122240
Authorizer:R. Benson, M. Carrano, P. Mannion Enterer:R. Benson, P. Mannion, G. Varnham, M. Carrano
Modifier:P. Mannion Research group:vertebrate
Created:2011-12-19 23:05:26 Last modified:2022-08-17 12:19:58
Access level:the public Released:2011-12-19 23:05:26
Creative Commons license:CC BY
Reference information

Primary reference:

49061. 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]

Secondary references:

78375 V. V. Kapur and A. Khosla. 2019. Faunal elements from the Deccan volcano-sedimentary sequences of India: a reappraisal of biostratigraphic, palaeoecologic, and palaeobiogeographic aspects. Geological Journal 54(5):2797-2828 [M. Carrano/M. Carrano]
81043 J. -C. Rage, G. V. R. Prasad, O. Verma, A. Khosla, and V. Parmar. 2020. 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. In G. V. R. Prasad, R. Patnaik (eds.), Biological Consequences of Plate Tectonics: New Perspectives on Post-Gondwana Break-up—A Tribute to Ashok Sahni 99-121 [P. Mannion/G. Varnham]
39683 R. S. Rana. 2000. Alligatorine teeth from the Deccan intertrappean beds near Rangapur, Andhra-Pradesh, India: further evidence of Laurasiatic elements. Current Science 59:49-51 [P. Mannion/P. Mannion]
49398 R. S. Rana and K. K. Sati. 2000. Late Cretaceous–Palaeocene crocodilians from the Deccan Trap-associated sedimentary sequences of peninsular India. Journal of the Palaeontological Society of India 45:123-136 [M. Carrano/M. Carrano]
38910 R. S. Rana and G. P. Wilson. 2003. New Late Cretaceous mammals from the Intertrappean beds of Rangapur, India and paleobiogeographic framework. Acta Palaeontologica Polonica 48(3):331-348 [R. Benson/R. Benson]
78086 J. P. Rio and P. D. Mannion. 2021. Phylogenetic analysis of a new morphological dataset elucidates the evolutionary history of Crocodylia and resolves the long-standing gharial problem. PeerJ 9:e12094:1-156 [P. Mannion/P. Mannion]
82406 G. P. Wilson Mantilla, P. R. Renne, B. Samant, D. M. Mohabey, A. Dhobale, A. J. Tholt, T. S. Tobin, M. Widdowson, S. Anantharaman, D. C. Dassarma, and J. A. Wilson Mantilla. 2022. New mammals from the Naskal intertrappean site and the age of India’s earliest eutherians. Palaeogeography, Palaeoclimatology, Palaeoecology 591:110857 [P. Mannion/P. Mannion/P. Mannion]