One dinosaur with 12 letters in their name is the Agujaceratop. The Agujaceratop use to be classified as a species of the Chasmosaurus.
Troödon
That's one... I don't any other dino's have 7 letters.
torosaurus
diplodocus
Utahraptor
Allosaurus
The hippopotamus is a mammal that has 12 letters in its name. and the big blue whale
Hippopotamus,Yellow jacketThe hippopotamus has twelve letters in its name.
12 letters
Passionfruit.
apatosaurs
Liechtenstein is the only one I know. ;)
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my dinosaurs
Granada fruit.
Walking with Dinosaurs was released on 12/20/2013.
Clash of the Dinosaurs was created on 2009-12-13.
Extreme Dinosaurs ended on 1997-12-24.