The earliest known mammals — dated at about 110 million years (Myr) — have been identified previously from small numbers of fossil teeth, making behavioral and anatomical comparisons difficult. In 25 April
Qiang
In...
The earliest known mammals — dated at about 110 million years (Myr) — have been identified previously from small numbers of fossil teeth, making behavioral and anatomical comparisons difficult. In 25 April
Qiang
In...