The placoderms were a diverse group of ancient armoured fishes and it’s widely believed that they are ancestral to virtually all vertebrates alive today, including humans. Placoderms dominated aquatic ...

Jaws are crucial to the evolutionary success of many animals, yet their origins have long been shrouded in mystery. Now a new discovery is shedding light on how the jaws of ancient fishes are related ...

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. They were the first back-boned creatures to evolve ...

A pregnant fossil fish at the Natural History Museum in London has shed light on the possible origin of sex, according to a new study. Dating from the Upper Devonian period 365 million years ago, the ...

A recent analysis of placoderm fossils — an early jawed vertebrate — shows that the animal kingdom’s first genital organ was a “clasper” that evolved from an extra set of legs, and that the first ...

Sex is an ancient tradition. It’s older than today’s continents, older than dinosaurs, older than trees, dating back to a time when vertebrate life thrived in the seas but had not yet ventured onto ...

(Reuters) - Scientists in Australia have unearthed beautifully preserved fossilized hearts and other internal organs of ancient armored fish in a discovery that provides insight into the evolution of ...

The placoderms were a diverse group of ancient armoured fishes and it’s widely believed that they are ancestral to virtually all vertebrates alive today, including humans. Placoderms dominated aquatic ...

Editor's Note: This article first appeared at The Conversation. 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 ...