. Bulletin - United States National Museum. Science. 248 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. The Discoglossidae must be regarded as the most primitive family of the Anura, as it shows none of these peculiar modifications, and presents the greatest resemblance to the salamanders in its ribs and opisthocoel vertebrae, and to other primitive types in its split sternum. In the accompanying diagram these affinities are expressed, and a possible phylogeuy is indicated. That the latter will prove largely correct is shown by the x)resence of Discoglossidfe in the Miocene beds of Prussia, parti
. Bulletin - United States National Museum. Science. 248 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. The Discoglossidae must be regarded as the most primitive family of the Anura, as it shows none of these peculiar modifications, and presents the greatest resemblance to the salamanders in its ribs and opisthocoel vertebrae, and to other primitive types in its split sternum. In the accompanying diagram these affinities are expressed, and a possible phylogeuy is indicated. That the latter will prove largely correct is shown by the x)resence of Discoglossidfe in the Miocene beds of Prussia, particularly near Bonn. The paleontology of the Salientia is, however, very imperfectly known. Ranidse. Cystignathiclffi. Scapbiopidse. EugystomidjE. \ CeratobatracbidEe,.. Hylidte Pelodytida; Asteropiiry di d se. 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 United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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