SOURCE: At the Earth's Core by Edgar Rice Burroughs (All-Story Weekly, April 4-25, 1914)

DESCRIPTION:"Dian told me they were tandorazes, or tandors of the sea, and that the other, and more fearsome reptiles, which occasionally rose from the deep to do battle with them, were azdyryths, or sea-dyryths--Perry called them Ichthyosaurs. They resembled a whale with the head of an alligator." (At the Earth's Core by Edgar Rice Burroughs)

NOTES: The "sea sloth" is the Ichthyosaurus of the seas of Pellucidar.

HISTORY: Burroughs features many saurians of the depths.