There are also the remains of many plant genera recovered from the Early Jurassic Camp Hill Formation , around the same age as fossils of `` Cryolophosaurus '' , proving that dense plant matter had once grown on Antarctica 's surface before it drifted southward .
There are also the remains of many plant genera around the same age as fossils of `` Cryolophosaurus '' , proving that dense plant matter had once grown on Antarctica 's surface before it drifted southward .