. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. romer: labyrinthodontia 81 ICHTHYOSTEGA, ICHTHYOSTEGOPSIS (Figs. 15, 16) These genera are from beds in East Greenland which, as noted in the stratigraphic section, He close to the Devonian-Carboniferous boundary; they are thus the oldest forms which are to be included with certainty among the Amphibia. They were first reported by Save- Soderbergh in 1932; an account was given of the dermal elements of the skull roof and some data on the palate. Unfortunately he has been unable to publish a more comprehensive descripti
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. romer: labyrinthodontia 81 ICHTHYOSTEGA, ICHTHYOSTEGOPSIS (Figs. 15, 16) These genera are from beds in East Greenland which, as noted in the stratigraphic section, He close to the Devonian-Carboniferous boundary; they are thus the oldest forms which are to be included with certainty among the Amphibia. They were first reported by Save- Soderbergh in 1932; an account was given of the dermal elements of the skull roof and some data on the palate. Unfortunately he has been unable to publish a more comprehensive description, and we are thus in nearly complete ignorance of the structure of the lower jaw, braincase and postcranial skeleton. The skull roof was described in detail, using a nomenclature dis- cussed in an earlier section. It is obvious from the author's illustrations /''r\T,a '{'• /;'l P'l VT/ ,' / i' PC MI 7l)' V \ \ //''/V " V\ \ \ &>1 :; ^l4j pop. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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