They're All Extinct

     "Finally! The pandemic is over" squawked one tyrannosaurus. "Too bad they're all extinct."
    "Too bad you're not a female." thought the other grimly.
     "The water level has risen. We are now on an island."
     "Houston, we have a problem." replied the other, assessing the chances of killing his colleague. "Btw. People don't exist yet."
     "Don't whine. Turtle?" the first one clenched his paw into a fist.
     "Turtles also don't exist either."
     "They do. Palaeontologists from the future discovered their shells and bones next to ours."
     "Will you guys stop babbling?" said the giant turtle on whose back they stood.