What really happened to the dinosaurs?

Front of T-shirt reads:  Dinosaurs did,t read.  Now they are extinct.  Coincidence?

White lettering printed on bright heathered green shirt. 

Back of shirt shows The ConundrumLogo(The Conundrum, St. Francisville, Louisiana )

Shirts are printed on Gildan SoftStyle Ring Spun shirts .  65% Polyester , 35% Cotton.