The predentary bone is one of the most enigmatic skeletal elements in avian evolution. Located at the tip of the lower jaw, this bone is absent in more primitive birds and in living birds; it is thought to have been lost ...
Archaeology
Nov 19, 2019
0
289
Flexible jaws may help wombats better survive in a changing world by adapting to climate change's effect on vegetation and new diets in conservation sanctuaries.
Plants & Animals
Nov 5, 2019
0
54
A big problem with dinosaurs is that there seem to be too many meat-eaters. From studies of modern animals, there is a feeding pyramid, with plants at the bottom, then plant-eaters, and then meat-eaters at the top.
Archaeology
Nov 4, 2019
0
351
Superbly preserved fossils from Russia, excavated by an international team and reported in the journal Nature, casts new and surprising light on one of the earliest tetrapods—the group of animals that made the evolutionary ...
Archaeology
Oct 23, 2019
0
412
The alligator gar, a toothy, narrow-snouted fish that resembles its namesake reptile, is the largest, native, freshwater predator in North America. They live primarily in Arkansas, Louisiana and Texas and can grow up to 10 ...
Plants & Animals
Aug 20, 2019
0
78
Reconstruction of the most complete fossil lizard found in Australia, a 15 million year old relative of our modern blue tongues and social skinks named Egernia gillespieae, reveals the creature was equipped with a robust ...
Archaeology
May 1, 2019
0
352
Is evolution predictable? What are the mechanisms that allow different fish to respond to the same environmental challenge in slightly different ways? When the same jaw bones and muscles change to produce the same feeding ...
Evolution
Feb 20, 2019
0
96
A new study published today in Nature shows that getting smaller was a key factor contributing to the exceptional evolution of mammals over the last 200 million years.
Paleontology & Fossils
Sep 17, 2018
4
105
Chewing: We don't think about it, we just do it. But biologists don't know a lot about how chewing behavior leaves telltale signs on the underlying bones. To find out, researchers at the Jacobs School of Medicine and Biomedical ...
Evolution
Aug 30, 2018
0
43
Food needs to be broken down in the mouth before it can be swallowed and digested further. How this is being done depends on many factors, such as the mechanical properties of the foods and the morphology of the masticatory ...
Archaeology
Aug 28, 2018
0
90
