Fighting for mates may be a behavior that dates back over 400 million years.
Click here for original story, Unique trilobite trident could be the oldest evidence of male sexual combat
Source: Phys.org
Fighting for mates may be a behavior that dates back over 400 million years.
Click here for original story, Unique trilobite trident could be the oldest evidence of male sexual combat
Source: Phys.org