A new genus and species of mammaliaform that lived during the Triassic period has been identified from a partial jaw with teeth found on the eastern coast of Greenland. It represents the earliest known example of a dentary bone with double molariform roots and a crown with two rows of cusps, and offers insight into mammal tooth evolution, particularly the development of double-rooted teeth. An artist’s impression of Kalaallitkigun jenkinsi. Image...
