There were three periods the dinosaurs existed in:
Triassic period (231.4 million years ago)
Jurassic period (200 million years ago)
Cretaceous period (66 million years ago)
The main dinosaur families are:
SAURISHIA - lizard hipped dinosaurs
- Theropods - beast-foot, all carnivorous dinosaurs, move on two legs. E.g. Tyrannosaurus Rex and Velociraptor
- Sauropods - evolved to wak on four legs, enormous size, herbivores. E.g. Brontosaurus and Brachiosaurus
ORNITHISCIA - bird hipped dinosaurs
- Thyreophora - shield-bearers, armoured dinosaurs, herbivores. E.g. Stegosaurus, Ankylosaurus
- Cerapods - horned faced, bird footed - interesting group of dinosaurs. E.g. Triceratops, Parasaurolophus
Flying and swimming dinosaurs both aren't actually dinosaurs, just a relative
- Pterosaurs - winged lizards, their wings are made of skin rather than feathers, a sub-group of Pterosaurs is Pterodactyl
- Sea Reptiles (swimming dinosaurs) e.g. Nothosaurus, Plesiosaurus, Elasmosaurus
Spinosaurus - the biggest meat eating dinosaur, could live on both land and in water, could swim as it had webbed feet, similar to crocodile
There have been discoveries of dinosaur fossils with clearly preserved feathers on them which suggests a lot of the species were actually feathered - this gives the dinosaurs a completely different aesthetic which I will have to take into consideration when making imagery. Although I found this articles which suggests that only a few dinosaurs definitely had feathers:
So I might not make it a main focus of the book, more of a fun fact on the side.
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