18 noviembre 2014
Climate over a large swath of the western US was more complex during the Jurassic than previously known, according to new research. Instead of a gradual transition from dry to wetter, chemical analysis of ancient soils reveals an unexpected abrupt change, say paleontologists. Samples were from the Morrison Formation, a massive rock unit sprawling across 13 states and Canada that’s produced significant dinosaur discoveries for over 100 years.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/NHR8w32Z-7I/141118125445.htm
