THE PREHISTORIC A–Z
Explore the letter M
A research index of dinosaur genus names, including names whose status has changed.
1,888 names catalogued from Wikipedia’s genus list on 11 October 2026. Inclusion does not establish that a name is a valid dinosaur genus. Historical or disputed names are marked for review. Names without a field note link go to the source overview.
- Macelognathus ↗Historical / disputed: review source
- Machairasaurus ↗Source index entry
- Machairoceratops ↗Source index entry
- Macrocollum ↗Source index entry
- Macrodontophion ↗Historical / disputed: review source
- Macrogryphosaurus ↗Source index entry
- Macrophalangia ↗Historical / disputed: review source
- Macroscelosaurus ↗Historical / disputed: review source
- Macrurosaurus ↗Source index entry
- Madsenius ↗Historical / disputed: review source
- Magnamanus ↗Source index entry
- Magnapaulia ↗Source index entry
- Magnirostris ↗Historical / disputed: review source
- Magnosaurus ↗Source index entry
- Magulodon ↗Historical / disputed: review source
- Magyarosaurus ↗Source index entry
- Mahakala ↗Source index entry
- Mahuidacursor ↗Source index entry
- Maiasauradinosaur · Cretaceous
- Maip ↗Source index entry
- Majungasaurusdinosaur · Cretaceous
- Majungatholus ↗Historical / disputed: review source
- Malarguesaurus ↗Source index entry
- Malawisaurus ↗Source index entry
- Maleevosaurus ↗Historical / disputed: review source
- Maleevus ↗Source index entry
- Malefica ↗Source index entry
- Maleriraptor ↗Source index entry
- Maltaceratops ↗Historical / disputed: review source
- Mamenchisaurusdinosaur · Jurassic
- Mandschurosaurus ↗Source index entry
- Manidens ↗Source index entry
- Manipulonyx ↗Source index entry
- Manospondylus ↗Historical / disputed: review source
- Mansourasaurus ↗Source index entry
- Mantellisaurus ↗Source index entry
- Mantellodon ↗Historical / disputed: review source
- Maojandino ↗Historical / disputed: review source
- Mapusaurusdinosaur · Cretaceous
- Maraapunisaurus ↗Source index entry
- Marasuchus ↗Historical / disputed: review source
- Marisaurus ↗Historical / disputed: review source
- Marmarospondylus ↗Source index entry
- Marshosaurus ↗Source index entry
- Martharaptor ↗Source index entry
- Masiakasaurusdinosaur · Cretaceous
- Massospondylusdinosaur · Jurassic
- Matheronodon ↗Source index entry
- Maxakalisaurus ↗Source index entry
- Mbiresaurus ↗Source index entry
- Medusaceratops ↗Source index entry
- Megacervixosaurus ↗Historical / disputed: review source
- Megadactylus ↗Historical / disputed: review source
- Megadontosaurus ↗Historical / disputed: review source
- Megalosaurusdinosaur · Jurassic
- Megapnosaurus ↗Historical / disputed: review source
- Megaraptordinosaur · Cretaceous
- Meidinosaur · Cretaceous
- Melanorosaurus ↗Source index entry
- Mendozasaurus ↗Source index entry
- Menefeeceratops ↗Source index entry
- Menucocelsior ↗Source index entry
- Meraxes ↗Source index entry
- Mercuriceratops ↗Source index entry
- Meroktenos ↗Source index entry
- Merosaurus ↗Historical / disputed: review source
- Mesetasaurus ↗Source index entry
- Metriacanthosaurus ↗Source index entry
- Mexidracon ↗Source index entry
- Microcephale ↗Historical / disputed: review source
- Microceratops ↗Historical / disputed: review source
- Microceratus ↗Source index entry
- Microcoelus ↗Source index entry
- Microdontosaurus ↗Historical / disputed: review source
- Microhadrosaurus ↗Source index entry
- Micropachycephalosaurus ↗Source index entry
- Microraptordinosaur · Cretaceous
- Microvenator ↗Source index entry
- Mierasaurus ↗Source index entry
- Mifunesaurus ↗Historical / disputed: review source
- Migmanychion ↗Source index entry
- Minimocursor ↗Source index entry
- Minmidinosaur · Cretaceous
- Minotaurasaurus ↗Source index entry
- Minqaria ↗Source index entry
- Miragaiadinosaur · Jurassic
- Mirischia ↗Source index entry
- Mnyamawamtuka ↗Source index entry
- Moabosaurus ↗Source index entry
- Mochlodon ↗Source index entry
- Mohammadisaurus ↗Historical / disputed: review source
- Mojoceratops ↗Historical / disputed: review source
- Mongolosaurus ↗Source index entry
- Mongolostegus ↗Source index entry
- Monkonosaurus ↗Source index entry
- Monoclonius ↗Source index entry
- Monolophosaurusdinosaur · Jurassic
- Mononychus ↗Historical / disputed: review source
- Mononykusdinosaur · Cretaceous
- Montanoceratops ↗Source index entry
- Morelladon ↗Source index entry
- Morinosaurus ↗Source index entry
- Morosdinosaur · Cretaceous
- Morosaurus ↗Historical / disputed: review source
- Morrosaurus ↗Source index entry
- Mosaiceratops ↗Source index entry
- Moshisaurus ↗Historical / disputed: review source
- Murusraptor ↗Source index entry
- Musango ↗Source index entry
- Musankwa ↗Source index entry
- Mussaurusdinosaur · Jurassic
- Muttaburrasaurusdinosaur · Cretaceous
- Muyelensaurus ↗Source index entry
- Mymoorapelta ↗Source index entry