terminal phalanges, [26];

number of joints, [27];

adhesive discs, [27];

variability in numbers, [563];

digits of Eryops, [286];

of Crocodiles, [441];

of Plesiosauri, [475];

of Geckos, [505]

Dimetrodon, [308]

Dimorphodon macronyx, [486]