page_title: List of the Cenozoic life of Colorado
section_title: M
hierarchical_section_title: List of the Cenozoic life of Colorado / M
caption_attribution_description: English: Crop of file in filename
context_page_description: This list of the Cenozoic life of Colorado contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Colorado and are between 66 million and 10,000 years of age.
context_section_description: †Macratria
  †Macratria gigantea – type locality for species
   Macrocranion
  †Macrocranion nitens
  †Macrodactylus
  †Macrodactylus pluto – type locality for species
  †Macrodactylus propheticus – type locality for species
  †Macrophya
  †Macrophya pervetusta – type locality for species
  †Macrorhoptus
  †Macrorhoptus intutus – type locality for species
  Magdalis
  †Magdalis lecontei
  †Magdalis sedimentorum – type locality for species
   Magnolia
  †Magnolia berryi
  †Magnolia magnifolia
  †Magnolia regalis
  †Magnolia rotundifolia
  Mahonia
  †Mahonia marginata
  †Mahonia obliqua – type locality for species
  †Mahonia subdenticulata
  †Maiorana
  †Malachius
  †Malachius immurus – type locality for species
  †Malus
  †Malus florissantensis
  †Malus pseudocredneria
  †Mammuthus
   †Mammuthus columbi
  †Manapsis – type locality for genus
  †Manapsis anomala – type locality for species
  Marmota
  †Marmota flaviventris
  †Marquettia
  †Marquettia americana – type locality for species
  Marsilea
  †Marsilea sprungerorum
  Martes
  †Masteutes
  †Masteutes rupis – type locality for species
  †Masteutes saxifer – type locality for species
  †Mataeoschistus – type locality for genus
  †Mataeoschistus limigenus – type locality for species
  †Matthewlabis
  †Matthewlabis cedrensis
  †Mattimys
  †Mecistoneuron – type locality for genus
  †Mecistoneuron perpetuum – type locality for species
  Mecocephala
   †Megacerops
  †Megacerops kuwagatarhinus
  Megachile
  †Megachile praedicta – type locality for species
  †Megacyllene
  †Megacyllene florissantensis – type locality for species
  †Megadelphus
  †Megadelphus lundeliusi
  †Megahippus
  †Megalagus
  †Megalagus brachydon
  †Megalagus brachyodon
  †Megalagus turgidus
  †Megalesthonyx
  †Megalictis
  †Megapenthes
  †Megapenthes primaevus – type locality for species
  †Megaraphidia – type locality for genus
  †Megaraphidia elegans – type locality for species
  †Megaraphidia exhumata – type locality for species
  †Megatryphon – type locality for genus
  †Megatryphon mortiferus – type locality for species
  †Megatylopus
  †Megatylopus gigas – or unidentified comparable form
  †Megaxyela
  †Megaxyela petrefacta – type locality for species
  †Melanactes
  †Melanactes cockerelli – type locality for species
  †Melanagrion
  †Melanagrion nigerrimum – type locality for species
  †Melanagrion umbratum – type locality for species
  †Melanagromyza
  †Melanagromyza prisca – type locality for species
  †Melanagromyza tephrias – type locality for species
  †Melanderella
  †Melanderella glossalis – type locality for species
  †Melanophila
  †Melanophila cockerellae – type locality for species
  †Melanophila handlirschi – type locality for species
  †Melanophila heeri – type locality for species
  Melanthrips
  †Melanthrips extincta – type locality for species
  †Melieria
  †Melieria atavina – type locality for species
  †Melieria calligrapha – type locality for species
  †Melittomma
  †Melittomma lacustrinum – type locality for species
  †Mellinus
  †Mellinus handlirschi – type locality for species
  Melospiza
  †Melospiza lincolnii
  †Meniscotherium
  †Meniscotherium chamense
  †Meniscotherium tapiacitum
   †Menoceras
  †Menoceras barbouri
  Mephitis
  †Mephitis mephitis
  †Meracantha
  †Meracantha lacustris – type locality for species
  †Merychippus
  †Merychippus coloradense
  †Merychippus sejunctus
  †Merychyus
  †Merychyus arenarum
  †Merychyus elegans – type locality for species
  †Merycochoerus
  †Merycochoerus magnus
  †Merycochoerus matthewi
  †Merycodus
  †Merycodus warreni
  †Merycoidodon – type locality for genus
  †Merycoidodon culbertsoni – type locality for species
  †Merycoidodon major
  †Mesatirhinus
  †Mesatirhinus junius
  †Mesobrochus – type locality for genus
  †Mesobrochus imbecillus – type locality for species
  †Mesobrochus lethaeus – type locality for species
  †Mesochorus
  †Mesochorus abolitus – type locality for species
  †Mesochorus aboriginalis – type locality for species
  †Mesochorus carceratus – type locality for species
  †Mesochorus cataclysmi – type locality for species
  †Mesochorus dormitorius – type locality for species
  †Mesochorus lapideus – type locality for species
  †Mesochorus revocatus – type locality for species
  †Mesochorus terrosus – type locality for species
   †Mesocyon
  †Mesocyon temnodon
  †Mesodma
  †Mesodma ambigua
  †M
caption: Fossilized skull of the Eocene-Oligocene three-toed horse Miohippus
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