page_title: List of the prehistoric life of Montana
section_title: Selected Cenozoic taxa of Montana
hierarchical_section_title: List of the prehistoric life of Montana / Cenozoic / Selected Cenozoic taxa of Montana
caption_attribution_description: Purgatorius unio, from the Late Paleocene of North America, believed to be the earliest primate, pencil drawing, digital coloring
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: Abies
  Abies
  Acer
  †Acheronodon
  †Acheronodon garbani – type locality for species
  Acipenser
   †Acritohippus
  †Acritohippus isonesus
  †Aelurodon
  †Aepycamelus
  †Aepycamelus stocki
  †Agnotocastor
  †Agriochoerus
  †Agrostis
  †Ailanthus
  Alangium
  Alnus
   †Amebelodon
  Amelanchier
  †Amentotaxus
  Amia
  †Ampelopsis
  †Amphechinus
  †Amphicyon
  †Amyzon
  Anas
  †Anas platyrhynchos – or unidentified comparable form
  †Anconodon
  †Anemia
  †Angustidens
  Antilocapra – or unidentified comparable form
  †Antilocapra americana
  †Aphelops
  †Araucaria
  †Archaeocyon
  †Archaeohippus
  †Arctocyon
  †Arctodus
  †Arctodus simus
  †Arctostaphylos
  Arundo
  Arvicola
  †aspera
  †Astronium
  †Athyana
  †Avunculus
   Azolla
  †Baiotomeus
  †Baiotomeus douglassi
  †Baiotomeus lamberti – type locality for species
  †Bathygenys
  †Berberis
  Berchemia
  Betula
  Bibio – or unidentified related form
  Bison
  †Bison bison
   †Bison latifrons – or unidentified comparable form
  †Bisonalveus
  †Bisonalveus browni
  †Blastomeryx
  †Blastomeryx gemmifer
  †Bootherium
  †Borealosuchus
  †Borealosuchus sternbergii
  †Brachychampsa
  †Brachycrus
  †Brachyrhynchocyon
  †Camelops
  †Camelops minidokae
  †Canavalia
  Canis
  †Canis latrans
  †Canis lupus
  †Canna
  †Cardiospermum
  Carpinus
   †Carpolestes
  Carya
  †Cassia
  Castanea
  Castor
  †Castor californicus
  †Castor canadensis
  †Catalpa
  †Catopsalis
  †Catopsalis alexanderi
  †Catopsalis waddleae
  Ceanothus
  Cedrela
  †Celastrus
  Celtis
  Cercidiphyllum
  Cercis
  †Cercocarpus
  †Chamaecyparis
  †Chamops
   †Champsosaurus
  †Chisternon
  †Chriacus
  †Chriacus calenancus
  †Chthonophis – type locality for genus
  †Chthonophis subterraneus – type locality for species
  †Cimexomys
  †Cimexomys minor – type locality for species
  †Cimolestes
  †Cimolestes incisus
   Cinnamomum
  Cissus
  Clematis
  Cocculus
  †Colodon
  †Colubrina
  †Colubrina asiatica – or unidentified comparable form
  †Compsemys
  †Coniophis – or unidentified comparable form
  †Conzattia
  Cornus
  †Corylus
  †Coryphodon
  †Cosoryx – tentative report
  Crataegus
   †Credneria
  Crematogaster
  Culiseta
  †Cynodesmus
  Cynomys
  †Cynomys ludovicianus
  †Dalbergia
  †Dalbergia retusa
  †Daphoenictis – or unidentified comparable form
  †Davidia
  †Derrisemys – type locality for genus
  †Desmatochoerus
  †Diceratherium
  †Didymictis
   †Dinictis
  †Dinohippus
  †Dioctria – tentative report
  †Diospyros
  †Diphysa
  Dipteronia
  †Dissacus
  Dolichoderus
  †Domnina
   †Dromomeryx
  †Dromomeryx borealis
  Dryopteris
  †Ectocion
  †Elomeryx – tentative report
  †Eoconodon
  †Eoconodon nidhoggi
  †Eotitanops
  †Epicyon
  †Epicyon haydeni
  †Epihippus
  †Equisetum
  Equus
  †Equus conversidens – or unidentified comparable form
  †Eucastor
  †Eucommia
   †Eucommia montana
  †Euonymus
  †Euoplocyon
  Exbucklandia
  Ficus
  Fokienia
  Formica
  †Fraxinus
  Geochelone
  Gerrhonotus – or unidentified comparable form
  Ginkgo
  †Ginkgo adiantoides
  Gleichenia
  Glyptostrobus
  †Goniacodon
  †Habrosaurus
  †Habrosaurus dilatus
  †Helaletes
  Helius
   †Helodermoides – type locality for genus
  †Helodermoides tuberculatus – type locality for species
  †Herpetotherium
  †Herpetotherium fugax
  †Herpetotherium knighti – or unidentified comparable form
  †Hesperocyon
  †Heteraletes
  †Hiodon
  Holmskioldia
  †Holopogon
  Homo
  †Homo sapiens
   †Homotherium
  †Homotherium serum
  †Hutchemys – type locality for genus
  †Hyaenodon
  †Hyaenodon crucians
  Hydrangea
  †Hydromystria
  †Hyopsodus
  †Hypertragulus
  †Hypisodus
   †Hypohippus
  †Hypolagus
  †Hypsiops
  †Hyrachyus
  †Hyracodon
  †Ictidopappus
  †Intyrictis
  †Ischyrhiza – or unidentified comparable form
  †Ischyrhiza avonicola
  †Ischyromys
  Isoetes
  Juglans
  †Juglans regia – or unidentified comparable form
  Juniperus
  †Kerria
  †Kimbetohia
  Koelreuteria
  Lasius
  Laurus
  Lemmiscus
  †Lemmiscus curtatus
  Lepisosteus
   †Leptauchenia
  †Leptictis
  †Leptocyon
  †Leptomeryx
  †Leptoreodon
  †Leucaena
  †Limnenetes
  Lindera
  †Lisserpeton
  †Lisserpeton bairdi
  †Lithornis
  †Lithornis celetius – type locality for species
  Lynx
   †Lynx rufus
  Magnolia
  Mahonia
  †Mammut
  †Mammut americanum
  †Mammuthus
  †Mammuthus columbi
  †Mammuthus primigenius
  Marchantia
  Marmota
  Martes
   †Megacerops
  †Megahippus
  †Megalonyx
  †Megalonyx jeffersonii
  †Megantereon
  †Megatylopus
  †Menodus
  †Merriamoceros
  †Merychippus
  †Merychippus sejunctus
  †Merychyus
   †Merycochoerus
  †Merycodus
  †Merycoides
  †Merycoidodon
  †Mesodma
  †Mesodma formosa
  †Mesodma garfieldensis –
caption: Life restoration of the Late Cretaceous-Paleocene primate relative Purgatorius
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