250 million years ago the armour-plated Placoderm fish invented the act of sex as we know it. Hubba Hubba. Dive into the historical sack as we go in search of the origins of nature’s greatest-ever invention.Dallas’s guest on this episode is Australian palaeontologist John Long, author of The Dawn of the Deed.Produced by Freddy Chick. The senior producer is Charlotte Long.If you'd like to learn more, we have hundreds of history documentaries, ad-free podcasts and audiobooks at History Hit - subscribe to History Hit today!Download the History Hit app from the Google Play store.Download the History Hit app from the Apple Store. Hosted on Acast. See acast.com/privacy for more information.