Only true dino experts will identify the next two: Which water-based dinosaur is pictured below?
See here what other people have answered:
- Pachycephalosauria
- Plesiosauria
- Nothosaur
- Mosasaurus
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Interesting fact:
The beloved Stegosaurus had the smallest brain for its body size of any known dinosaur! The creatures could grow to be the size of a van but alas, their little brains were about the size of a walnut. Talk about brawn over brains!