The Karai Formation is a Mesozoic (Albian to Turonian) geologic formation in India. Fossilised ichthyosaur remains and shark teeth have been reported from this formation. It is designated as a National Geological Monument by the Geological Survey of India.
Paleobiota Chondrichthyans +Chondrichthyans Genus Species Material FamilyProtosqualus P. sp. An incomplete tooth SqualidaeGladioserratus G. magnus A lower lateral toothHexanchidae ?Notidanodon ?N. sp. A tooth fragment Cretalamna C. appendiculaia Twenty-five teeth OtodontidaeDwardiusD. sudindicus Over a hundred teeth Cardabiodontidae?Eostriatolamia ?E. sp. An upper lateral tooth and a cusp of an anterior tooth Odontaspididae Squalicorax S. aff. baharijensis Five complete and two fragmentary teeth Anacoracidae Cretodus C. longiplicatus Fifteen teeth Pseudoscapanorhynchidae
Ichthyosaurs +Ichthyosauria Genus Species Material Notes Ichthyosauria indet. Vertebrae Previously known as "Platypterygius indicus".IchthyosaurusI. indicus A few complete and one partially complete vertebrae. Considered a nomen dubium.Ichthyosauriaindet. Six adult teeth (DUGF/41-45), a juvenile tooth (DUGF/46), and seven partial vertebrae Earlier tentatively assigned to P. indicus. It is similar to other species of Platypterygius. It was later noted that only one of the teeth can be assigned to Platypterygiinae.Platypterygius P. sp. indet. Anterior caudal vertebra Platypterygiine ichthyosaur.
Mollusk +Mollusks Genus Species Sub-class FamilyAcanthocerasA. rhotomagenseAmmonoideaAcanthoceratidaeCalycocerasC. asiaticum C. navicularePseudocalycoceras P. harpax sp.KunnamicerasK. tropicumEucalycocerasE. pentagonumLotzeitesL. aberransDesmoceras D. latidorsatum sp. DesmoceratidaeSciponoceras sp.BaculitidaePhyllocerasP. seresitensePhylloceratidaeHolcodiscoidesH. elegansKossmaticeratidaeCymatocerasC. huxleyanumNautilidaeEutrephocerasE. justumPycnodonteP. vesicularisGryphaeidae
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