Home > News Updated 23 October 2014 How sex was invented Scientists have unveiled how the first sex on earth happened, and it wasn't pretty. 25 Placoderm from Shutterstock ~ Once upon a time there was a daddy placoderm and a mummy placoderm, and they liked each other a lot. So, one day, these two placoderms stood next to one another and had sex, and it was the first time sex as we (tangentially) know it had happened on planet Earth. Few similarities to human sexThis is what scientists announced this week following a detailed analysis of fossils discovered in as geographically unaffiliated destinations as Scotland, China and Estonia, said the paper which was published in Nature. The animals in questions lived not in the sea, but in lakes, and existed around 380 million years ago. Mankind earliest ancestor was believed to have lived only 1.8 million years ago.The logistics of the coupling bore very few similarities to human sex. Firstly, the animals did not face each other or approach "doggy style" from the read. Instead, the animals floated side by side "as if they were square dancing."As for genitals, they were to be found at the bottom end of the organism, where the feet would be on a human. The male had a pair of claspers, long, rigid, L-shaped appendages. The female had genital plates which formed a small area on her backside.These genital plates were described in the paper as being like a cheese grater. This rough texture would cause the male claspers to get locked in place and allow the transfer of sperm to commence.Read: Nutrition improves sperm quality Strangely, over time fish seem to have lost the ability to have sex this way, with eggs being fertilised inside the body of the female. Modern fish release eggs and sperm into the water where they are then fertilised, outside of the body. Why this happened remains a mystery to scientists, reports Vox. Read more:The rampant sex lives of animals Well-fed sperm are happy sperm New animal literally sexes itself to death Image: Placoderm from Shutterstock Harry Phillips NEXT ON HEALTH24X You won’t believe what happens at this bizarre health camp 2017-08-19 07:47 More: News advertisement Read Health24’s Comments Policy Comment on this story 25 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news Medical You won’t believe what happens at this bizarre health camp News Boy, 13, who had heart transplant dies on 1st day of school Medical 7 habits to protect you against the flu Medical HIV patient finally gets life-saving ARVs Lifestyle Ritual murders, rape and domestic violence rampant in this community Medical SEE: Eating snot is good for your child From our sponsors Johannesburg conference to tackle digital transformation in healthcare WIN a R2000 voucher. Great skin is just a click away! How erectile dysfunction can affect relationships Coital incontinence: the ‘oops’ women are too afraid to talk about Live healthier Myths busted! » Breastfeeding may reduce pain from C-section Breastfeeding and work - how to make it work 9 breastfeeding myths busted Breastfeeding will help me lose my baby weight, right? Wrong! We bust nine myths about breastfeeding. Eat right. » How watching porn can cause erectile dysfunction 7 scientific ways to cure erectile dysfunction 7 foods that could relieve erectile dysfunction If you experience erectile dysfunction from time to time, you may be able to manage the problem without any medical help.