Spinops

Thescelosaurus neglectus, an hypsilophodont from North America, pencil drawing

Thescelosaurus neglectus, a hypsilophodont from the Late cretaceous of North America

Attenborosaurus conybeari, a plesiosaur from the Early Jurassic of England, pencil drawing

Attenborosaurus conybeari, a plesiosaur from the Early Jurassic of England, pencil drawing

Attenborosaurus conybeari, a plesiosaur from the Early Jurassic of England, pencil drawing

Life reconstruction of Californosaurus perrini

Californosaurus perrini, an ichthyosaur from the Late Triassic of North America, pencil drawing

Californosaurus perrini, an ichthyosaur from the Late Triassic of North America, pencil drawing

Californosaurus perrini, an ichthyosaur from the Late Triassic of North America, pencil drawing

Abydosaurus