Wikipedia
Euclastes
Euclastes is an extinct genus of sea turtle. It was first named by Edward Drinker Cope in 1867, and contains three species. E. hutchisoni, was named in 2003 but has since been reassigned to the genus Pacifichelys, while 'E. coahuilaensis' named in 2009 was reassigned as Mexichelys coahuilaensis in 2010