page_title: List of the Cenozoic life of Montana
section_title: A
hierarchical_section_title: List of the Cenozoic life of Montana / A
caption_attribution_description: Русский: Amphicyon ingens / собакомедведьУкраїнська: Amphicyon ingens, реконструкція
context_page_description: This list of the Cenozoic life of Montana contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Montana and are between 66 million and 10,000 years of age.
context_section_description: Abies
  †Abies alvordensis
  †Abies concoloroides
  †Abies laticarpa
  Acer
  †Acer bendirei
  †Acer bolanderi
  †Acer glabroides
  †Acer minor
  †Acer newberryi
  †Acer oregonianum
  †Acer scottiae
  †Acer silberlingi
  †Acheronodon
  †Acheronodon garbani – type locality for species
  Acipenser
  †Acmeodon
   †Acritohippus
  †Acritohippus isonesus
  †Acritoparamys
  †Acritoparamys atavus – type locality for species
  †Actinodonta
  †Adjidaumo
  †Adjidaumo intermedius – or unidentified comparable form
  †Adjidaumo minimus – type locality for species
  †Adunator
  †Adunator ladae
  †Aelurodon
  †Aelurodon ferox – or unidentified comparable form
  †Aelurodon montanensis – type locality for species
   †Aepycamelus
  †Aepycamelus stocki
  †Agnotocastor
  †Agnotocastor montanus
  †Agriochoerus
  †Agriochoerus maximus – type locality for species
  †Agriochoerus minimus
  †Agrostis
  †Agrostis primaeva
  †Ailanthus
  †Ailanthus americana
  Alangium
  †Alangium thomae
  †Alepidophora
  †Alepidophora maxima – type locality for species
  †Alismaphyllites
  †Alismaphyllites grandifolius
  Alnus
  †Alnus jarbidgana
  †Alnus protomaximowiczii
  †Alnus relata
  †Alphagaulus
  †Alphagaulus pristinus
   †Amebelodon
  †Amebelodon floridanus – or unidentified comparable form
  Amelanchier
  †Amelanchier couleeana
  †Amelanchier covea
  †Amentotaxus
  †Amentotaxus campbelli
  Amia
  †Amia fragosa
  †Amia uintaensis
  †Ampelopsis
  †Ampelopsis acerifolia
  †Amphechinus
  †Amphechinus horncloudi
   †Amphicyon
  †Amphicyon riggsi – type locality for species
  †Amynodon
  †Amynodon advenus – or unidentified comparable form
  †Amyzon
  †Anacodon
  †Anacodon ursidens – or unidentified comparable form
  Anas
  †Anas platyrhynchos – or unidentified comparable form
  †Ancenycteris
  †Ancenycteris rasmusseni
  †Anconodon
  †Anconodon cochranensis
  †Anconodon gidleyi – type locality for species
  †Anemia
  †Anemia elongata
   †Angustidens
  †Angustidens vireti – or unidentified comparable form
  †Anisonchus
  †Anisonchus oligistus
  †Anisonchus sectorius
  †Ansomys
  †Ansomys hepburnensis – type locality for species
  †Ansomys nexodens
  †Antholithes
  †Antholithes asterias – type locality for species
  †Antholithes botryanthera – type locality for species
  †Antholithes divaricanthera – type locality for species
  †Antholithes explodens – type locality for species
  †Antholithes glandulifera – type locality for species
  †Antholithes onagracioides – type locality for species
  †Antholithes tropaeoloides – type locality for species
  †Antholithes tulipoidea – type locality for species
  †Antholithes umbelloidea – type locality for species
  †Antholithes urnanthera – type locality for species
  †Antholithes zygomorpha – type locality for species
  Antilocapra – or unidentified comparable form
  †Antilocapra americana
  †Aphelops
  †Aphronorus
  †Aphronorus fraudator – type locality for species
  †Aphronorus orieli
  †Apternodus
  †Apternodus baladontus – type locality for species
  †Apternodus mediaevus – type locality for species
  †Araceaeites
  †Araucaria
  †Araucaria longifolia
   †Archaeocyon
  †Archaeocyon leptodus
  †Archaeohippus
  †Archaeolagus
  †Archisyrphus – type locality for genus
  †Archisyrphus opacus – type locality for species
  †Arctocyon
  †Arctocyon ferox
   †Arctodus
  †Arctodus simus
  †Arctostaphylos
  †Arctostaphylos cuneata
  †Ardynomys
  †Ardynomys occidentalis – type locality for species
  †Arretotherium
  †Arretotherium acridens – type locality for species
  Arundo
  †Arundo pseudogoepperti
  Arvicola
  †Arvicola richardsonii
  †aspera
  †aspera aspera
   †Astronium
  †Astronium truncatum
  †Athyana
  †Athyana haydenii
  †Atoposemys
  †Atoposemys entopteros
  †Aulolithomys
  †Aulolithomys bounites – type locality for species
  †Averrhoites
  †Averrhoites affinis
  †Avunculus
  †Avunculus didelphodonti – type locality for species
  †Axestemys
  †Axestemys montinsana
   Azolla
  †Azolla elegans – type locality for species
  †Azolla fragilis – type locality for species
  †Azolla velus
caption: Life restoration of the Miocene-Pliocene beardog Amphicyon
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