. The Batrachia of North America. Amphibians. Sliould«;r (.'iriUcs of Fig. o of the iircilcroiis type (Scaphinpiis holbroKki). Fig. b. Itana tern, poraria, tadpole with Imildiiig Imibw. Fig. c, do., adult, liviiiistfinial type *. '' and c from Parker. As primitive Hatrachia are toothed, it is evident thar the toothless condition of the Bufunida' and sonic other families is due to retar- dation or degeneracy. The arciferous sternum is, ou the other hand, a primitive condition, since it i)revails in the Frodela, and also in the 8tegocephali and Kachitomi of the (Jarbonifoious Age,
. The Batrachia of North America. Amphibians. Sliould«;r (.'iriUcs of Fig. o of the iircilcroiis type (Scaphinpiis holbroKki). Fig. b. Itana tern, poraria, tadpole with Imildiiig Imibw. Fig. c, do., adult, liviiiistfinial type *. '' and c from Parker. As primitive Hatrachia are toothed, it is evident thar the toothless condition of the Bufunida' and sonic other families is due to retar- dation or degeneracy. The arciferous sternum is, ou the other hand, a primitive condition, since it i)revails in the Frodela, and also in the 8tegocephali and Kachitomi of the (Jarbonifoious Age, in the latter associated with median sternal elements. The roofing in of the Eustachian tubes seen in the Aglossa is also a character superadded to the primitive condition, as the loss of tongue is a case of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cope, E. D. (Edward Drinker), 1840-1897. Ashton, Maryland : Eric Lundberg
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Keywords: ., bookauthorcopeededwarddr, bookcentury1900, booksubjectamphibians
