The Cambay Shale Formation is geologic formation in the Cambay Basin, India. It is of lower Eocene age. It varies in thickness from a few meters on the margins of the basin to more than 2,500m in the depressions. It directly overlies the Olpad Formation and is, in turn, overlain by the Anklesvar Formation in the southern part of the basin and by Kalol Formation in the northern part of the basin. Further north, the Cambay Shale, in its lower part, is gradually replaced by tongues of paralic-deltaic Kadi Formation and finally by Tharad Formation.
Cambay Shale Formation | |
---|---|
Stratigraphic range: Eocene ~ | |
Type | Geological formation |
Location | |
Region | Gujarat |
Country | India |
Source: Perroleum Geology of the Cambay Basin, India by LR Chowdhary, Indian Petroleum publishes, Dehradun, India.
Paleobiota
Plants
Plants from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Pterospermoxylon | P. suratensis | An angiosperm. | ||||
Anthocephalophyllum | A. vastanicum | An angiosperm. | ||||
Ebenoxylon | E. cambayense | An angiosperm. | ||||
Gardeniophyllum | G. cambayum | An angiosperm. | ||||
Calophyllaceophyllum | C. eocenicum | An angiosperm. | ||||
Carallioipollenites | C. integerrimoides | An angiosperm known from fossilised pollen. | ||||
Gynocardia | G. eocenica | An angiosperm. | ||||
Mammals[1]
Anthracobunians from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Cambaytherium | C. thewissi C. gracilis C. bidens |
A cambaytheriid. | ||||
Kalitherium | K. marinus | Another cambaytheriid. | ||||
Indobune | I. vastanensis | A possible anthracobunid. |
Primates[2] from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Asiadapis | A. cambayensis A. tapiensis |
An Asiadapine. | ||||
Marcgodinotius | M. indicus | Another Asiadapine. | ||||
Vastanomys | V. gracilis V. major |
A omomyid. | ||||
Hyaenodonts from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Indohyaenodon | I.raoi | A hyaenodont. | ||||
Dichobunids from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Diacodexis | D.indica D.pakistanensis D.parvus |
A Diacodexeine. | ||||
Tapiromorphs from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Cambaylophus[3] | C. vastanensis | A tapiromorph. | ||||
Vastanolophus[4] | V. holbrooki | A tapiromorph. | ||||
Cimolestans from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Suratilestes | S. gingerichi | A cimolestan. | ||||
Anthraconyx | A. hypsomylus | A esthonychid | ||||
Bats from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Archaeonycteris | A. storchi | A bat. | ||||
Protonycteris | P. gunnelli | A bat. | ||||
Cambaya | C. complexus | A bat. | ||||
Hassianycteris | H. kumari | A bat. | ||||
Icaronycteris | I. sigei | A bat. | ||||
Jaegeria | J. cambayensis | A bat. | ||||
Microchiropteryx | M. folieae | A bat. | ||||
Other mammals from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Frugivastodon | F. cristatus | A apatemyid. | ||||
Indolestes | I. kalamensis | An adapisoriculid. | ||||
Indodelphis | I. luoi | A opossum. | ||||
Meldimys[5] | M. musak | A rodent. | ||||
Indonyctia[6] | I. cambayensis | A nyctitheriid. | ||||
Reptiles
Birds from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Vastanavis | V.eocaena | A parrot. | ||||
Lizards from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Indiagama | I. gujarata | A iguanian. | ||||
Suratagama | S. neeraae | A iguanian. | ||||
Tinosaurus | T. indicus | A iguanian. | ||||
Vastanagama | V. susanae | A iguanian. | ||||
Heterodontagama | H. borsukae | A priscagamid iguanian. | ||||
Amphibians
Amphibians from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Eobarbourula | E. delfinoi | A toad. | ||||
Indorana | I.prasadi | A frog. | ||||
Arthropods
Crabs
Crabs from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Philyra | P. karkata | A leucosiid crab. | ||||
Insects
Beetles from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Protoclaviger[7] | P.trichodens | A Beetle. | ||||
Cambaltica | C. paleoindica | A Flea Beetle. | ||||
Paleosorius | P. cambayensis | A Rove Beetle. | ||||
Hemipterans[8] from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Heteromargarodes | H. hukamsinghi H. americanus |
A sand pearl. | ||||
Normarkicoccus | N. cambayae | A diaspidid scale insect. | ||||
Neuropterans from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Spiloconis[9] | S. sexguttata S. glaesaria S. oediloma S. eominuta |
A Aleuropterygine Coniopterygid. | ||||
Bees from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Melikertes[10] | M. (Paramelikertes) gujaratensis M. (Melikertes) kamboja |
A bee. | ||||
Termites[11] from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Nanotermes | N. isaacae | A termitid termite. | ||||
Prostylotermes | P. kamboja | A Stylotermitid termite. | ||||
Parastylotermes | P. krishnai | A Stylotermitid termite. | ||||
Zophotermes | Z. ashoki | A Rhinotermitid termite | ||||
Flies from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Sycorax[12] | S. longistyla | A moth fly. | ||||
Phlebotoiella | P. eoindianensis | A moth fly of unceritian affinities. | ||||
Dicranomyia | D. (Dicranomyia) indica | The oldest known Crane fly and tipulomorph.[13] | ||||
Stempellina | S.pollex S.stebneri |
A non-biting midge | ||||
Tanytarsus | T.forfex T.ramus |
A non-biting midge | ||||
Camptopterohelea | C. odora | A non-biting midge | ||||
Eohelea | E. indica | A biting midge | ||||
Gedanohelea | G. gerdesorum | A biting midge | ||||
Indorrhina | I.sahnii | A biting midge | ||||
Lygistorrhina | L. indica | A biting midge | ||||
Meunierohelea | M. borkenti | A biting midge | ||||
Meunierohelea | M. cambayana | A biting midge | ||||
Meunierohelea | M. orientalis | A biting midge | ||||
Palaeognoriste | P. orientale | A biting midge | ||||
Webspinners from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Kumarembia | K. hurleyi | One of the few fossil Webspinners known. | ||||
Arachnids
Whip spiders from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Paracharonopsis[14] | P. cambayensis | A Paracharontid. | ||||
Fish
Whip spiders from the Cambay Shale formation | ||||||
---|---|---|---|---|---|---|
Genus | Species | Stratigraphic position | Notes | Images | ||
Avitoplectus[14] | A. molaris | A bony fish. | ||||
Color key
|
Notes Uncertain or tentative taxa are in small text; |
References
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