September 6, 2018

Artist's impression of Jurassic seas (Image courtesy Nikolay Zverkov. All rights reserved)

An article published in the journal “Nature Ecology & Evolution” describes a study on marine reptiles that lived in a sea area that crossed today’s northern Europe called Jurassic Sub-Boreal Seaway during the Jurassic period. A team of paleontologists coordinated by the University of Edinburgh analyzed the shape and size of teeth that belonged to reptile that lived over a period of 18 million years, discovering that the marine predators living in deep waters prospered when sea levels rose while species they lived in shallow waters declined or even became extinct.