Saturday, April 20, 2013
Claw Marks Suggest that Theropod Dinosaurs Were Powerful Swimmers
In some of the books about dinosaurs that I read as a child, it was suggested that theropod dinosaurs were poor swimmers. I had always thought this was unlikely, as many modern day birds and predatory reptiles can swim well. New evidence in the form of ancient claw marks on a Chinese river bed suggests that theropod dinosaurs actually were strong swimmers, confirming this prediction. The fossilized tracks suggest that they were made by a small theropod dinosaur which swam for approximately fifty feet. This discovery and the former illustration have brought an intriguing question to my mind. Could some species of feathered theropod dinosaurs have had glands which produced oil that waterproofed their feathers (like modern ducks and penguins do)? Further examination of fossilized remains of feathered dinosaurs may bring the answer to this question in the future, and more exciting data which gives insight into the habits and behaviors of nonavian dinosaurs will likely be coming soon.
Please click the link below to read more about this exciting discovery.
New evidence dinosaurs were strong swimmers