We humans use the euphemism for sex that “we like to get a leg over” but the first jawed vertebrates – the placoderms – they liked to get a leg in.
.
The First Vertebrate Sexual Organs Evolved as an Extra Pair of Legs
We humans use the euphemism for sex that “we like to get a leg over” but the first jawed vertebrates – the placoderms – they liked to get a leg in.
There are currently 1 users browsing this thread. (0 members and 1 guests)
Posting Permissions
Quote