Evolution Diary

A retrovirus related to HIV became stably integrated into the genome of several lemurs around 4.2 million years ago, according to research led by Dr. (…)

A giant fossil sea monster found in the Arctic had a bite that would have been able to crush a 4×4 car, according to its discoverers. (…)

This four-million-year-old fossil has taken some of the bite out of the great white shark’s supposedly menacing ancestry, a new study finds. (…)

A giant head and gill-covered body make this newly reconstructed creature (pictured) “one of most bizarre fossil creatures that there is,” one scientist said. (…)

Illustration courtesy Li-Da Xing
A newfound dinosaur fossil with feathers suggests that plumage may have begun to appear with the rise of all dinosaurs more than 200 million years ago. (…)