Inscrit le: 07 Oct 2017
|Posté le: Sam 16 Déc - 09:08 (2017) Sujet du message: Scientists find teeth of early human ancestor
Scientists have come to believe that modern placental mammals – from whales to bats, and yes, humans too – descended from small furry mammals that lived during the age of the dinosaurs.
On November, scientists announced the discovery of two fossil teeth from these ancient creatures, the earliest fossils of these creatures known so far, in rocks from the coast of Dorset in England. The teeth date back to 145 million years ago. The scientists’ statement said.
Steve Sweetman at the University of Portsmouth is the paper’s main author. He’s an expert in small vertebrates that lived during the Cretaceous period. In his team’s statement, he recounted how an undergraduate at the university, Grant Smith, made the extraordinary discovery of two unusual fossil teeth.
Sweetman believes, were probably nocturnal. To an expert’s eye, a single tooth can reveal a lot about an animal. One of the fossil teeth may have belonged to a ground burrower that probably ate insects. The other tooth may have belonged to a creature that also ate plants.
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