First post on #mastodon:
Two #ClassicJurassic #dinosaurs from the Big Eight Dinosaurs Revelations exhibition in HK. #Allosaurus jimmadseni - a more gracile and older Allosaurus species. And #Hesperosaurus mjosi, a stegosaurid that preceded the famous #Stegosaurus.

More research needs to be done on Morrison Fm stratigraphy aid our understanding on the true extent of which species are truely coeval with one. This allows us grasp the environmental and ecological changes throughout the Morrison Fm.