At the present day the Chelonia alone include oceanic, fresh-water, and terrestrial forms.

Turtles and tortoises belong to the order known as Chelonia.

The turtle-group (Chelonia) makes its appearance in the Triassic and thrives in the Jurassic.

Or to turn to the higher Vertebrata-inwhat sense are the Liassic Chelonia inferior to those which now exist?

CHELONIA.-Anorder of Reptiles including the Turtles, Tortoises, etc.