Q&A: Animals in Extra Large In general, the large size of some prehistoric animals in comparison to their modern counterparts had to do with evolutionary opportunity. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Trilobites: Something’s Brewing in the Lab: Beer Without HopsHow to work for NASA: THIS is your chance to help the space agencyOumuamua breakthrough: Where is the alien asteroid from? Scientists discover SHOCK originWORLD WAR 3 is COMING: Biblical analyst David Meade says ‘insane’ nuclear conflict loomsScientists FINALLY work out where cigar-shaped alien asteroid Oumuamua came fromSudan, the Last Male Northern White Rhino, Dies in Kenya