. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 44 Bulletin Museum of Comparative Zoology, Vol. 146, No. 1 fragosa is much more dorsoventrally ex- panded than in A. calva, with the antero- posterior length extending almost to the anterior edge of the preoperculum. Infra- orbital 4 of A. fragosa and A. scutata is more concave at the dorsal edge, and much more convex ventrally. The pit-line marks extend further ventrad than is indicated in the reconstruction by Estes (1964). Branchiocranium. In A. fragosa, the supramaxilla is relatively shorter than in A. iiintaensis
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 44 Bulletin Museum of Comparative Zoology, Vol. 146, No. 1 fragosa is much more dorsoventrally ex- panded than in A. calva, with the antero- posterior length extending almost to the anterior edge of the preoperculum. Infra- orbital 4 of A. fragosa and A. scutata is more concave at the dorsal edge, and much more convex ventrally. The pit-line marks extend further ventrad than is indicated in the reconstruction by Estes (1964). Branchiocranium. In A. fragosa, the supramaxilla is relatively shorter than in A. iiintaensis, A. scutata, and A. calva, with a greater curve in the maxillo-supramaxil- lary suture. The dorsoposterior corner in A. fragosa tends to be angular, as in A. scutata, whereas in A. calva and A. uintaen- sis it is more rounded. The supramaxilla is deeper and more truncated at the anterior end than in other species of Ainia. There is a dorsal shelf adjacent to the lingual border of the alveolar ridge which widens the anterodorsal surface of the den- A. fragosa A. uintaensis A. scutata A. calva. A. fragosa. 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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