page_title: List of the Paleozoic life of Maryland
section_title: M
hierarchical_section_title: List of the Paleozoic life of Maryland / M
caption_attribution_description: English: Metacoceras discoideum Meria; Bellerophon Formation, Upper Permian, Urtijëi; Museum de Gherdëina, Urtijëi, South Tyrol, Italy. Deutsch: Metacoceras discoideum Meria; Bellerophon Formation, Oberperm, St. Ulrich in Gröden; Museum de Gherdëina, St. Ulrich in Gröden, Südtirol, Italien.
context_page_description: This list of the Paleozoic life of Maryland contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Maryland and are between 541 and 252.17 million years of age.
context_section_description: †Macluritella
  †Macluritella marylandica – type locality for species
  †Mastigobolbina
  †Mastigobolbina arguta
  †Mastigobolbina lata
  †Mastigobolbina typus
  †Mcqueenoceras
  †Meekospira
  †Meekospira percuta – or unidentified related form
  †Megamolgophis
  †Megamolgophis agostini
  †Melanoblattula – type locality for genus
  †Melanoblattula nigrescens – type locality for species
  †Meristina
   †Metacoceras
  †Metacoceras marylandica – type locality for species
  †Modiolopsis
  †Modiolopsis gregarius
  †Modiolopsis leightoni
  †Modiolopsis modiolaris
  †Modiomorpha
  †Monticulipora
  †Mylacris
  †Mylacris lapsa – type locality for species
  †Mysticoceras
caption: Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras
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