Mystery of multiple extinctions in the Jurassic solved
The only halfway realistic aspect of “Jurassic Park” may be that the land was thronged with life, much of which with fangs. One can hardly generalize about the weather 200 to 145 million years ago, but the Jurassic by and large seems to have been warm and wet. The fact is that a lot of new species emerged in that time, from the lumbering stegosaurs and gigantosaurs to the earliest known proper birds – yes, your duck had ancestors back then. Tiny rodents began to emerge. In the Late Jurassic, the fearsome allosaurus arose too. And no, it isn’t a T-rex.
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