27 mars 490000000 av. J.-C. - Crinoid
Description:
-a fossil called Echmatocrinus, from the famous Burgess Shale fossil site in British Columbia may be the earliest crinoid.Source:
https://samnoblemuseum.ou.edu/wp-content/uploads/2017/08/mod-Crinoid.jpg
http://www.kgs.ku.edu/Extension/fossils/crinoid.html
Ajouté au bande de temps:
Date:
27 mars 490000000 av. J.-C.
Maintenaint
~ Il y a 5883516 ans