Английская Википедия:Intertrappean Beds

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Infobox rockunit

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 more diverse Lameta Formation. The formation spans the Cretaceous–Paleogene boundary, and a significant debate exists about whether specific sites belong to the Cretaceous or the Paleocene.[1][2] Indeterminate theropod and pterosaur remains have been recovered from the formation, as well as dinosaur eggs.[3][4] The mammal genera Deccanolestes, Sahnitherium, Bharattherium, and Kharmerungulatum have been recovered from it as well.[5] A rich plant flora is known from the formation.

Paleobiota

Fauna

Fish

Genus Species Location Stratigraphic position Material Notes Images
Igdabatis I. indicus Kisalpuri and Piplanarayanwar[6][7] An eagle ray
Lepisosteus L. indicus Kisalpuri and Piplanarayanwar[6][7] A gar
Osteoglossidae incertae sedis Kisalpuri and Piplanarayanwar[6][7] An osteoglossid of uncertain affinities
Pycnodontidae incertae sedis Kisalpuri and Piplanarayanwar[6][7] A pycnodontid of uncertain affinities
Siluriformes incertae sedis Kisalpuri and Piplanarayanwar[6][7] A catfish of uncertain affinities

Amphibians

Genus Species Location Stratigraphic position Material Notes Images
Indobatrachus I. pusillus Worli Hill Multiple complete specimens[8] A frog Файл:Indobatrachus.jpg

Turtles

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[9] Skull[9] A bothremydid

Lepidosaurs

Genus Species Location Stratigraphic position Material Notes Images
Acrosphenodontia Incertae sedis Naskal microvertebrate site[10] Dentary with teeth.[10] A rhynchocephalian
Deccansaurus D. palaeoindicus Kesavi locality[11] Jaws & several osteoderms[11] A scincoid lizard
Indophis I. sahnii Naskal microvertebrate site[12] Over 160 vertebrae[12] A snake
Serpentes Incertae sedis Naskal microvertebrate site[12] A trunk vertebra & left dentary[12] A snake

Crocodyliforms

Genus Species Location Stratigraphic position Material Notes Images
Dyrosauridae incertae sedis Kisalpuri[13] Partial mandible, frontal, and vertebrae A dyrosaurid crocodyliform.

Dinosaurs

Genus Species Location Stratigraphic position Material Notes Images
Megaloolithus baghensis Kisalpuri[6] Eggshell fragments A sauropod egg.
Subtiliolithus kachhensis Kisalpuri[6] Eggshell fragments A theropod egg.

Pterosaurs

Genus Species Location Stratigraphic position Material Notes Images
Pterosauria incertae sedis Sirol-khal locality[4] An indeterminate dentulous pterosaur. May not be from the Maastrichtian.[14]

Mammals

Genus Species Location Stratigraphic position Material Notes Images
Bharattherium B. bonapartei Kisalpuri Sudamericid
Deccanolestes D. hislopi Naskal microvertebrate site Molars, calcanea, astralgi, humerus, ulna Eutherian
D. robustus Naskal microvertebrate site "Dental material and an astragalus"
D. narmadensis Kisalpuri
Indoclemensia I. naskalensis Naskal microvertebrate site[2]
I. magnus Naskal microvertebrate site[2]
Indotriconodon I. magnus Kutch[15] Eutriconodonta
Kharmerungulatum K. vanvaleni Kisalpuri[16] Eutherian
Sahnitherium S. rangapurensis Rangapur microvertebrate site[17] Upper Molar

Flora

Genus Species Location Stratigraphic position Material Notes Images
Connaroxylon C. dimorphum Dhagaon, Mandla district[18] Wood[18] Affinities with Connaraceae.
Euphorbiotheca E. deccanensis Fruit, member of Euphorbiaceae[19]
Hyphaeneocarpon Fruit, member of palm tribe Borasseae.[20]
Palmocarpon Fruit, member of palm tribe Cocoseae.[21]
Palmoxylon P. dindoriensis Wood, member of palm subfamily Coryphoideae.[22]
Pantocarpon Fruit, member of Torricelliaceae[23]
Phyllanthocarpon P. singpurensis Fruit, member of Phyllanthaceae.[24]
Rhizopalamoxylon Palm rhizome, close affinities to Nypa.[25]
Pediastrum Algae.[26]
Lecaniella Algae.[26]
Pierceites P. deccanensis A Dinocyst.[26]
Aulacoseira A Diatom.[26]
Azolla Member of Salviniaceae.[26]
Crybelosporites Member of Marsileaceae.[26]
Sparganiaceaepollenites Pollen grains, Member of [26]Sparganiaceae/Typhaceae.
Marsilea Member Marsileaceae.[26]
Regnellidium Member of Marsileaceae.[26]
Nymphaeaceae indet.[26]
Typhaceae indet.[26]
Liliaceae indet.[26]
Acanthaceae indet.[26]
Pontederiaceae indet.[26]
Ovoidites Member of Zygnemataceae.[26]
Gabonisporis Pollen grains, member of Marsileaceae.[26]

See also

Шаблон:Portal

Footnotes

Шаблон:Reflist

References

  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. Шаблон:ISBN.

Шаблон:Geologic-formation-stub