Machairodus

Macrauchenia

Maiasaura

Majungatholus

Mamenchisaurus

Mammut americanum

Mammuthus columbi

Mammuthus exilis

Mammuthus imperator

Mammuthus meridionalis

Mammuthus primigenius

Mammuthus trogontherii

Massospondylus

Megaladapis

Megalania

Megalocerus

Megalonyx

Megalosaurus

Meganeura

Megantereon

Megaraptor

Megatherium

Meiolania

Melanorosaurus

Mesohippus

Mesonyx

Mesopithecus

Metoposaurus

Metriorhynchus

Miacid

Microraptor

Minmi

Moeritherium

Monolofosaurus

Mosasaurus

Moschops

Musaurus

Mutaburrasaurus