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Evolution of Stingrays

Like sharks sting rays don't really have bones and instead have a skeleton made out of cartilage. This means there bodies don't fossilize very well and are usually lost to time. Despite this there is a lot that their genetics, close relatives and the few scant complete fossils can tell us about how they evolved. To support me on Patreon (thank you):   / 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://onlinelibrary.wiley.com/doi/f... https://onlinelibrary.wiley.com/doi/p... https://www.mdpi.com/2226-4310/3/3/20... https://hal-insu.archives-ouvertes.fr... https://www.britannica.com/animal/fis... https://www.pnas.org/content/112/52/1...