Berman et al. 2010
brought us a new trematopid amphibian, Fedexia striegeli (Figs. 1-3; CM 76867; late Carboniferous; 300 mya; est. .6m long). Not quite matching the Berman et al. study, the large reptile tree (LRT, 1326 taxa) nests Fedexia at the base of the clade including Tambachia and Ecolsonia. This appear to be due to taxon exclusion
initially mistook the exposed teeth for a fern frond. The naris is elongated, covering a majority of the lateral rostrum. The orbit appears to be taller than wide, but when calipers are placed on it, the horizontal and vertical are identical. A small notch appears between the ventral premaxilla and maxilla. The lateral premaxillary teeth are enlarged to fangs.
like Ecolsonia and Tambachia (Fig. 3) are similar in size and overall morphology.
Berman DS, Henrici AC, Brezinski DK and Kollar AD 2010. A new trematopid amphibian (Temnospondyli: Dissorophoidea) from the Upper Pennsylvanian of western Pennsylvania: earliest record of terrestrial vertebrates responding to a warmer, drier climate PDF. Annals of Carnegie Museum. 78 (4): 289–318. doi:10.2992/007.078.0401