page_title: List of the prehistoric life of Montana
section_title: Selected Mesozoic taxa of Montana
hierarchical_section_title: List of the prehistoric life of Montana / Mesozoic / Selected Mesozoic taxa of Montana
caption_attribution_description: עברית: טריצרטופס במוזיאון להיסטוריה של הטבע בלוס אנג'לס,ארצות הבריתEnglish: Triceratops mounted skeleton at Los Angeles Museum of Natural History, Los Angeles, United States of America
context_page_description: This list of the prehistoric life of Montana contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Montana.
context_section_description: †Achelousaurus – type locality for genus
  †Achelousaurus horneri – type locality for species
  †Acheroraptor – type locality for genus
  †Acheroraptor temertyorum – type locality for species
  Acipenser
  †Acristavus – type locality for genus
  †Acristavus gagslarsoni – type locality for species
  †Adocus
  †Albanerpeton
  †Albanerpeton nexuosus
  †Albertaceratops
  †Albertaceratops nesmoi
  †Albertosaurus
  †Allocrioceras
   †Allosaurus
  †Alphadon
  †Alphadon attaragos
  †Alphadon halleyi – type locality for species
  †Alphadon marshi
  †Alphadon wilsoni
  †Alzadasaurus – tentative report
  Amia
  †Amphicoelias
  †Anatotitan
  †Anatotitan copei
   †Ankylosaurus – type locality for genus
  †Ankylosaurus magniventris – type locality for species
  †Aquilops – type locality for genus
  †Aquilops americanus – type locality for species
  Aralia – or unidentified comparable form
  †Arcticoceras – tentative report
  †Arctocephalites
  †Arctocephalites gracilis – or unidentified comparable form
  †Arctocephalites maculatus – or unidentified comparable form
  †Arctocephalites platynotus – or unidentified comparable form
  †Arctocephalites sawtoothensis
  †Arctocephalites saypoensis
  †Asplenium
  Astarte
  †Aublysodon
  †Aublysodon mirandus
  †Avaceratops – type locality for genus
  †Avaceratops lammersi – type locality for species
   †Avisaurus – type locality for genus
  †Avisaurus archibaldi – type locality for species
  †Avisaurus gloriae – type locality for species
  Azolla
  †Baculites
  †Baculites asper
  †Baculites codyensis
  †Baculites compressus
  †Baculites mariasensis
  †Baena
  †Bambiraptor – type locality for genus
  †Bambiraptor feinbergi – type locality for species
  Barbourula – or unidentified comparable form
   †Basilemys
  †Belonostomus
  †Belonostomus longirostris
  †Bernissartia
  †Borealosuchus
  †Borealosuchus sternbergii
  Brachaelurus
  †Brachyceratops – type locality for genus
  †Brachyceratops montanensis – type locality for species
  †Brachychampsa – type locality for genus
  †Brachychampsa montana – type locality for species
   †Brachylophosaurus
  †Brachylophosaurus canadensis – type locality for species
  †Camarasaurus
  Campeloma
  Carcharias
  †Cedrobaena
  †Centrosaurus
  †Cerasinops – type locality for genus
  †Cerasinops hodgskissi – type locality for species
  †Ceratodus
  †Ceratops – type locality for genus
  †Ceratops montanus – type locality for species
  †Chamops
   †Champsosaurus
  †Chasmosaurus – or unidentified comparable form
  Chiloscyllium
  †Chirostenotes
  †Chirostenotes elegans
  Chlamys
  †Chondroceras
  †Cimexomys
  †Cimexomys minor
  †Cimolestes
  †Cimolestes incisus
  †Cimolestes stirtoni
  †Cimoliasaurus
  †Cimolodon
  †Cimolodon nitidus
   †Cimolomys
  †Cimolomys clarki – type locality for species
  †Cimolomys gracilis
  †Cimolopteryx
  †Cimolopteryx maxima
  Cladophlebis
  †Cladophlebis alberta
  †Cladophlebis constricta
  †Cladophlebis heterophylla
  †Cladophlebis inclinata
  †Cladophlebis oblongifolia
  †Cladophlebis oerstedi
  †Cladophlebis virginiensis
  †Claosaurus
  †Claraia
  †Claraia aurita
  †Claraia clarai
  †Claraia mulleri
  †Claraia stachei
  †Clidastes
  †Componocancer
  †Componocancer roberti
  †Compsemys
  †Coniophis
  †Continuoolithus
  †Coriops
   †Corythosaurus
  †Corythosaurus casuarius
  †Cretolamna
  †Cretolamna appendiculata
  †Cretorectolobus – type locality for genus
  †Cretorectolobus olsoni – type locality for species
  †Crocodilus
  Cucullaea
  †Daspletosaurus
  †Daspletosaurus horneri – type locality for species
  †Deinodon – type locality for genus
  †Deinodon horridus – type locality for species
   †Deinonychus – type locality for genus
  †Deinonychus antirrhopus – type locality for species
  †Deinosuchus – type locality for genus
  †Deinosuchus rugosus – type locality for species
  Dentalium
  †Derrisemys
  †Diclonius
  †Didelphodon
  †Didymoceras
  †Didymoceras cheyennense
  †Didymoceras nebrascense
  †Didymoceras stevensoni
   †Diplodocus
  †Doratodon – or unidentified comparable form
  †Dromaeosaurus
  †Dromaeosaurus albertensis
  †Dyoplosaurus
  †Dyoplosaurus acutosquameus
  †Edgarosaurus
  †Edgarosaurus muddi
  †Edmontonia
  †Edmontonia longiceps
  †Edmontonia rugosidens – type locality for species
  †Edmontosaurus
   †Edmontosaurus annectens
  †Einiosaurus – type locality for genus
  †Einiosaurus procurvicornis – type locality for species
  †Emar
caption: Mounted fossilized skeleton of the Late Cretaceous horned dinosaur Triceratops
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