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Description
I don't have much time to do full pieces at the moment, so here is another raw scan of a basic sketch.

This diagram represents the basic layout of the Kimmeridgian aged middle Morrison formation, about 154 million years ago. A semi-arid "savannah" of ferns and bennettitales covered much of the land. Forests on Ginkgo and relatives grew along the waterways which snaked across the plain and forests of cheirolepidiaceous conifers grew in elevated areas surrounding the proto-Rocky Mountains. Large salt plains existed in areas where the Western Interior Seaway had retreated earlier in the Jurassic. The climate was warm, with notable wet and dry seasons, the latter of which could result in long periods of intense drought.

Description
I don't have much time to do full pieces at the moment, so here is another raw scan of a basic sketch.

This diagram represents the basic layout of the Kimmeridgian aged middle Morrison formation, about 154 million years ago. A semi-arid "savannah" of ferns and bennettitales covered much of the land. Forests on Ginkgo and relatives grew along the waterways which snaked across the plain and forests of cheirolepidiaceous conifers grew in elevated areas surrounding the proto-Rocky Mountains. Large salt plains existed in areas where the Western Interior Seaway had retreated earlier in the Jurassic. The climate was warm, with notable wet and dry seasons, the latter of which could result in long periods of intense drought.