Tetrapods of the Pennsylvanian nodules from Mazon Creek, Illinois

Abstract

These fossils are extremely rare, but exquisitely preserved. They indicate a coal-swamp environment, with a definite but unlocated connection with Europe. Descr. the amphibians Amphibamus grandiceps, (=Mazonerpeton, Miobatrachus), known from 5 specimens, all immature, and referred to the Dissorhophidae; Micrerpeton caudatum (=Eumicrerpeton). which may be a young Amphibamus and in any case cannot be placed as to family; Erierpeton branchialis, an indeterminate labyrinthodont; Spondylerpeton spinatum; Sauropleura sp.; Phlegethontia mazonensis; the reptile Cephalerpeton ventriarmatum; the indeterminate material descr. as Mazonerpeton and Erpetobrachium. The "amphibian" Amphibamus thoracatus is a plant.