pseudocentrous, [4], [78];

stereospondylous, defined, [79], [284];

temnospondylous, [13];

defined, [79], [284];

development of–in Urodela, [12], [13];

in Anura, [19];

of trunk of Salamandra, [14];

epichordal, [20];

sacral, of Anura, [22];

shifting forwards of sacral attachment of ilium, [23];