'...The last name of Oliver Perry, one of these scientists, known for his history of the vertebrates of the Pleistocene'
a paleontologist
HAY IS: ...The last name of Oliver Perry, one of these scientists, known for his history of the vertebrates of the Pleistocene
...The last name of Oliver Perry, one of these scientists, known for his history of the vertebrates of the Pleistocene
...The last name of Oliver Perry, one of these scientists, known for his history of the vertebrates of the Pleistocene
HAY IS
a paleontologist
HAY IS