It’s prep day again and the crew is back to work on the fossils. Here is an image of a bone fragment from an Edmonton bonebed a it’s obvious when people say that some fossil preparation is like putting together a puzzle. This fossil should be glued together by the end of the day and a follow up picture will follow. Enjoy!
This is one of several ribs that were worked on this summer from a Theropod called Daspletosaurus. This cretaceous predator could reach lengths of approximately 8-9 meters and lived between 77-74 million years ago.
The ribs from this specimen are unique in the fact that many of them show signs of healed bone where a fracture had occurred. This is in fact a belly-rib called a gastralia, which were ribs that were suspended in the flesh on the underside of a theropods body. This shows evidence that the dinosaur injured itself, either through falling or interactions with another dinosaur, and broke several of its belly-ribs. He survived however and the bone healed, producing a large callus where new bone joined the two broken pieces back together
I will be posting more pictures of other ribs up soon, but for now enjoy these few pictures and have fun pondering. How do you think it injured itself? post your answers in the comments below!
It’s the opportunities to work on specimens like this why I followed through in pursuing paleontology. This dromaeosaurid claw was found in dinosaur provincial park and is roughly 70-75 million years old
These bones I worked on quickly today show a rib fragments that have evidence of being preyed upon. These fossils have an impression of a scar left by a predatory dinosaur!
The pictures below show the steps of bringing a fossil from the field into the lab. This Hadrosaur Femur discovered during the 2011 field season is currently in the lab waiting to be prepared. It took four people to carry the casted femur from where it was discovered to a road where it could be loaded into a truck and taken home
The fossil is wrapped in burlap and plaster to create a protective cast around it while it is being transported and prepared
Palaeontologists in South Korea have described what they are claiming as the largest carnivorous tooth marks on the tail bone of a herbivorous dinosaur. The largest of the marks ran 17 centimetres long, 2 centimetres wide and 1.5 centimetres deep. There is also evidence that several different dinosaurs fed on the same prey item by tooth mark evidence!
A new set of polar dinosaur footprints found on Australia’s coast has provided the largest and most well preserved set of tracks known of polar dinosaurs in the Southern Hemisphere. Check out this article for more details and be sure to check out the video on the same page at the bottom of the article!
The Predentary of ceratopsians was located at the tip of the lower jaw and acted much like a beak for cropping off vegetation for consumption
This ceratopsian predentary was found during the 2011 field season in Dinosaur Provincial Park in Alberta, Canada and was found isolated.
This is one view of the lab that is located in the basement of the biological Sciences building at the University of Alberta in Edmonton, Alberta, Canada.