[PLATE 4]

1 and 2. Vertebræ of Spondylerpeton spinatum Moodie. × 1.

3. Type specimen of Mazonerpeton costatum Moodie. × 1.

4. Type skeleton of Cephalerpeton ventriarmatum Moodie. × 0.9.

5 and 6. The halves of the nodule containing a practically complete skeleton of Amphibians grandiceps Cope. × 1.

Originals of above figures in the Yale University Museum.

Genus MAZONERPETON Moodie.

Moodie, Kans. Univ. Sci. Bull., vol. VI, No. 2, p. 336, 1912.