Cladogram of the Ornithischians
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Edward Hitchcock, pioneer of North American dinosaur footprint studies
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Tectonics of Rifting and Drifting: Pangea Breakup
[Pangea the super-continent, all the land all clustered together on one side of the world. But isn't there a super-ocean to go with that, on the other side? Why don't they ever talk about that? Or was it that? It's hard to believe all the land was on one side and all the water on the other.]
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Large Igneous Provinces