Word: paleobotanist
(lookup in dictionary)
(lookup stats)
Dates: during 1970-1979
Sort By: most recent first
(reverse)
When did life begin on earth? Harvard Paleobotanist Elso S. Barghoorn and his onetime student, J. William Schopf, discovered a possible answer to that intriguing question several years ago, when they found microscopic fossils in ancient South African rocks. These tiny traces of life indicated that single-celled creatures existed as long as 3.1 billion years ago. Now a team headed by Schopf himself has found evidence that could push the dawn of life back at least another 200 million years...
...countryside of desert valleys in central Utah that 150 million years ago was a lush tropical shore along an inland sea, inhabited by huge flesh-eating dinosaurs. The area has thus yielded a rich supply of plant and animal fossils. Examining a specimen of the fossil under a microscope, Paleobotanist William D. Tidwell of Brigham Young University recognized the unmistakable cellular structure of the palm...