Dinosaur Fossils: Early Discoveries A British fossil finder and ecclesiastic, William Buckland , discovered the first dinosaur fossil remains of our modern times. It was given its name in Prior to this, Reverend Plot had found a huge femur bone as early as in England. It was thought to belong to a giant. Brookes published a report on Plot's find in Authorities suggest it may actually have belonged to a dinosaur.
Scientists agree on one aspect of Mary Schweitzer's research. The tissues she found shouldn't have been there, at least according to basic concepts of fossilization. Because of this, critics assert that what Schweitzer really found was a contaminated sample, not a breakthrough. Over 65 million years, there's plenty of time for other life forms to contaminate the bones of a dinosaur. Fossils also come into contact with human and other tissues during excavation. This presents a challenge for researchers trying to prove that a cell , tissue sample or DNA strand came from a specific extinct animal.
How Do Scientists Determine The Age Of Dinosaur Bones?
Unlike bones and teeth, which can survive for hundreds of millions of years, soft tissues are among the first materials to disappear during the fossilization process. Even so, scientists have found intact soft tissue in dinosaur bones before. The most famous case dates to , when Mary Schweitzer of North Carolina State University found collagen fibers in the fossilized leg bone of a Tyrannosaurus rex. But such discoveries are rare, and have previously occurred only with extremely well preserved fossils.
Dinosaurs used to live in New Zealand. We know this because their fossils have been found in a few places. They were found together with fossils of land plants, including pollen from trees and tree ferns, as well as with fossil marine animals. The remains of dead land animals and plants were probably washed down a river and into a shallow bay, where they mixed with the remains of dead marine animals. This material was compressed together with sediments into a sandstone rock.