Dinosaurs That Start With M
Explore a complete list of over 71 dinosaurs that start with the letter M.
Each dinosaur listed has a dedicated page with information on classification, diet, size, fossil evidence, geographic distribution, and maps of known fossil locations, where available. Pages may also include size comparison charts, fossil representations, and in-depth descriptions based on current scientific research.
The amount of information varies by species, depending on the completeness of fossil discoveries.
Diet: Uncertain.Size: Uncertain.Time Period: Possibly Barremian of the Cretaceous.
Diet: Uncertain.Size: Unavailable.Time Period: Campanian/Maastrichtian of the
Cretaceous.
Diet: Carnivore.Size: 1.8†‬-†‬2†‬meters long.Time Period: Maastrichtian of the Cretaceous.
Diet: Herbivore�Size: Between†‬4†‬and†‬6†‬meters long.Time Period: Hettangian to Pliensbachian of the
Jurassic.
Diet: Herbivore.Size: Unavailable.Time Period: Late Cretaceous.
Diet: Herbivore.Size: Holotype,†‬estimated to be about†‬13â€
‬meters long,†‬but possibly as much as†‬20†‬meters long.Time Period: Turonian to Santonian of the Cretaceous.
Diet: Herbivore.Size: Uncertain due to incomplete fossil material.Time Period: Campanian of the Cretaceous.
Diet: Carnivore.Size: Roughly estimated at around 9 ‬meters long.Time Period: Bathonian of the Jurassic.
Diet: Carnivore.Size: Around†‬3†‬meters long.Time Period: Hettangian through to Pliensbachian of
the Jurassic.
Diet: Carnivore.Size: Uncertain due to lack of remains, but
estimated to be as much as 8 meters long.Time Period: Turonian of the Cretaceous.
Diet: Carnivore.Size: Type specimen 53 centimetres long, but does
not represent an adult.Time Period: Valanginian of the Cretaceous.
Diet: Herbivore.Size: Up to†‬8†‬meters long.†‬Skull†‬25â€
‬centimetres long.Time Period: Carnian to Norian of the Triassic.
Diet: Herbivore.Size: Uncertain due to lack of remains.Time Period: Turonian/Coniacian.
Diet: Herbivore.Size: Holotype individual roughly estimated to have
been about†‬8†‬meters long.Time Period: Mid Campanian/Early Maastrichtian of
the Cretaceous.
Diet: Carnivore.Size: Skull estimated at†‬1.27†‬meters long.â€
‬Full body size for holotype individual estimated to be over nine
meters long.Time Period: Early Cenomanian to Late Turonian of
the Cretaceous.
Diet: Herbivore.Size: Uncertain due to lack of remains,†‬but
comparison to Chasmosaurus suggests a length of
about†‬4.5-4.8â€
‬meters long.Time Period: Campanian of the Cretaceous.
Diet: Herbivore.Size: Femur†‬48†‬centimetres long.†‬Body length
roughly estimated at about†‬4†‬meters.Time Period: Late Triassic.
Diet: Carnivore.Size: femur 80 centimetres long. Total size
uncertain due to lack of remains, but
comparison to similar theropod dinosaurs yields rough estimates of
about 6 meters long for the holotype.Time Period: Oxfordian of the Jurassic.
Diet: Herbivore.Size: Roughly about†‬60†‬centimetres long.Time Period: Cenomanian of the Cretaceous.
Diet: Herbivore.Size: Unknown.Time Period: Cretaceous.
Diet: Herbivore.Size: About†‬60†‬centimetres long.Time Period: Campanian of the Cretaceous.
Diet: Carnivore.Size: Roughly about 1†‬meter long.Time Period: Aptian of the Cretaceous.
Diet: Uncertain.Size: Holotype is estimated at about†‬1.2†‬meters
long,†‬but this is of a juvenile.†‬Adult size roughly estimated at
about†‬3†‬meters long.Time Period: Albian of the Cretaceous.
Diet: Herbivore.Size: Skull about†‬68†‬centimetres long.Time Period: Berriasian/Valanginian of the
Cretaceous.
Diet: Herbivore.Size: estimated between 2 and 3 meters long.Time Period: Aptian of the Cretaceous.
