The first Marine Reptiles

Over 300 million years ago shortly after evolving to leave the sea the fossil record already contains creatures that have adapted aquatic features and returned to the water. These creatures were ancient reptiles called mesosaurs and they are a contender for one of the first animals to return to water after leaving it. Despite being incredibly ancient they left many fossils so quite a lot is known about them and they lead very unusual lives in an unusual place. To support me on Patreon (thank you): https://www.patreon.com/MothLightMedia To donate to my PayPal (thank you): https://www.paypal.me/mothlightmedia To buy merchandise: teespring.com/en-GB/stores/moth-light... Email: [email protected] If I have used artwork that belongs to you but have neglected to credit it this will just be because I was unable to find one. If this has happened please contact me and I will add a credit. Some Art work has been altered for the purposes of bettering them for video format; these alterations were done independent from the artists who created the original work, so they are not responsible for any inaccuracies that could have occurred with the changes being made. Sources: https://www.researchgate.net/publication/345379905_The_birth_and_demise_of_the_vast_epicontinental_Permian_Irati-_Whitehill_sea_Evidence_from_organic_geochemistry_geochronology_and_paleogeography https://www.researchgate.net/publication/394454650_Osteological_profile_of_new_Mesosauridae_from_the_Irati_Formation_Parana_Basin https://www.researchgate.net/figure/Webbing-impression-preserved-on-mesosaur-specimens-A-hindlimb-of-Stereosternum-SMNK_fig4_340974239 https://www.researchgate.net/publication/387416191_The_Largest_Mesosaurs_Ever_Known_Evidence_from_Scanty_Records https://www.researchgate.net/publication/357940800_Pygocephalomorpha https://www.sciencedirect.com/science/article/abs/pii/S0031018220305514