page_title: List of the Cenozoic life of California
section_title: M
hierarchical_section_title: List of the Cenozoic life of California / M
caption_attribution_description: English: Reconstructions of the Miocene toothed whales Macrodelphinus kelloggi and Eurhinodelphis bossi from what is now the coast of California. (C) Stanton F. Fink
context_page_description: This list of the Cenozoic life of California contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of California and are between 66 million and 10,000 years of age.
context_section_description: †Machaeromeryx – tentative report
  †Machaeromeryx tragulus
   †Machairodus
  Macoma
  †Macoma andersoni
  †Macoma calcarea
  †Macoma carlottensis
  †Macoma copelandi
  †Macoma diabloensis
  †Macoma expansa
  †Macoma indentata
  †Macoma inquinata
  †Macoma moesta
   †Macoma nasuta
  †Macoma pabloensis – or unidentified comparable form
  †Macoma panzana
  †Macoma planiuscula – or unidentified comparable form
  †Macoma secta
  †Macoma viticola
  Macrarene
  Macrocallista
  †Macrocallista furlongi – or unidentified comparable form
  †Macrocallista horni – or unidentified comparable form
  †Macrocallista meganosensis – type locality for species
  †Macrocallista pittsburgensis
  †Macrocallista squalida
  †Macrocallista squalidus
  †Macrocallista weaveri
  †Macrochlamis
  †Macrochlamis magnolia
   †Macrodelphinus – type locality for genus
  †Macrodelphinus kelloggi – type locality for species
  †Macrotarsius
  †Macrotarsius roederi – type locality for species
  Mactromeris
  †Mactromeris abbotti
  †Mactromeris acutirostrata – or unidentified comparable form
  †Mactromeris albaria
  †Mactromeris bisculpturata – or unidentified comparable form
  †Mactromeris brevirostrata
  †Mactromeris catilliformis
  †Mactromeris hemphillii
  †Mactromeris mercedensis – or unidentified comparable form
  †Mactromeris merriami
  †Mactromeris montereyana – type locality for species
  †Mactromeris muliniaformis – type locality for species
  †Mactromeris pittsburgensis – or unidentified comparable form
  †Mactromeris polynyma
  †Mactromeris ramonensis
  †Mactromeris rushi
  †Mactromeris sectoris
  †Mactromeris tejonensis
  Mactrotoma
  †Mactrotoma californica
  †Mactrotoma nasuta
  Madracis
  †Madracis wellsi – type locality for species
  Madrepora
  †Madrepora solida – type locality for species
   Magnolia
  †Magnolia corrallina
  †Magnolia dayana
  Mahonia
  †Mahonia macginitiei
  †Mahonia reticulata
  †Mahonia simplex
  Makaira
  Malea
  †Malea ringens
  Malletia
  Mallotus
  †Mallotus riparius
  †Mambrinia
  †Mambrinia gallica – type locality for species
  †Mammut
  †Mammut americanum – all local specimens previously referred to this species have since been reclassified in the new species M. pacificus.
  †Mammut cosoensis
  †Mammut matthewi
  †Mammut pacificus – type locality for species. Many specimens were previously regarded as specimens of M. americanum.
  †Mammuthus
  †Mammuthus columbi
  †Mammuthus exilis
  †Mammuthus hayi
   †Mammuthus primigenius
  †Mancalla – type locality for genus
  †Mancalla californiensis – type locality for species
  †Mancalla cedrosensis – or unidentified comparable form
  †Mancalla diegenesis
  †Mancalla diegensis – type locality for species
  †Mancalla emlongi – type locality for species
  †Mancalla lucasi – type locality for species
  †Mancalla milleri – type locality for species
  †Mancalla vegrandis
  †Mancalla vergrandis – type locality for species
  †Mangelia
  †Mangelia variegata
  †Margaritana
  †Margaritana falcata – or unidentified comparable form
  Margarites
  †Margarites pupillus
   Marginella
  Marginulina
  †Marginulina adunca – or unidentified comparable form
  †Marginulina dubia
  †Marginulina eximia
  †Marginulina munda
  Marmota
  †Marshochoerus
  †Marshochoerus socialis
   Martes
  Martesia
  †Martesia meganosensis – type locality for species
  †Martinogale
  †Martinogale faulli – type locality for species
  Martinottiella
  †Martinottiella eocenica
  Maxwellia
  †Maxwellia gemma
  †Mayena – tentative report
  †Mayena kewi – or unidentified comparable form
  †Mealanitta
  †Mealanitta deglandi
  †Mediochoerus
  †Mediochoerus mohavensis
  †Megacamelus
  †Megacamelus merriami
  Megachasma
  †Megachasma applegatei – type locality for species
  Megachile
  †Megachile gentilis
  †Megahippus
  †Megahippus matthewi
  †Megahippus mckennai – type locality for species
   †Megalonyx
  †Megalonyx jeffersonii
  †Megalonyx mathisi – type locality for species
  †Megalonyx wheatleyi
  Megalops – tentative report
  †Megalops vigilax
  †Megapaloelodus
  †Megapaloelodus connectens
  †Megapetalus
  Megaptera
  †Megaptera miocaena – type locality for species
  Megatebennus
  †Megatebennus bimaculata
  †Megatebennus bimaculatus
  Megathura – tentative report
  †Megatylopus
  †Megatylopus matthewi – or unidentified comparable form
  †Megistostoma
  †Megistostoma gabbiana – or unidentified comparable form
  Melampus
caption: Life restoration of the Oligocene toothed-whale Macrodelphinus (background)
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