Megalania was much more than a lizard With a gigantic stomach and gizzard With recurving teeth This varanid bequeathed Lacerations that sliced, diced, and scissored.
A synapsid with a diminutive head Was barely aware of itself getting fed With low-quality fodder It was a very slow plodder No wonder, by the Triassic, it was dead.
I am an ichnologist, someone who studies the traces and trace fossils left by life: tracks, trails, burrows, and other indirect signs of behavior. Modern and ancient traces alike interest me, as these lend insights on how behavior has changed through time (or not).