. Bulletin of the Buffalo Society of Natural Sciences. Natural history -- New York (State); Natural history. Fig. 161. Actinopteria boydi. Left and right valves (from Hall I. Found in the Pleurodictyum beds, and the Calcareous bed above: also in the shales below the Nautilus bed, in Avery's Creek and on the Lake Shore ( rare I. Genus LEIOPTERIA. Hall [Ety. : Leios, smooth ; pteria, <v genus.] (1884 : Pal. N. Vol. Pt. I., p. xiii.) Shell resembling Actinopteria in form, with a large wing, the extremity of which is produced. Kays absent. The liga- mental area is external, and marked b
. Bulletin of the Buffalo Society of Natural Sciences. Natural history -- New York (State); Natural history. Fig. 161. Actinopteria boydi. Left and right valves (from Hall I. Found in the Pleurodictyum beds, and the Calcareous bed above: also in the shales below the Nautilus bed, in Avery's Creek and on the Lake Shore ( rare I. Genus LEIOPTERIA. Hall [Ety. : Leios, smooth ; pteria, <v genus.] (1884 : Pal. N. Vol. Pt. I., p. xiii.) Shell resembling Actinopteria in form, with a large wing, the extremity of which is produced. Kays absent. The liga- mental area is external, and marked by fine, parallel, longi- tudinal stria-. Lateral teeth one or two. oblique, slender. Cavity of the beak partially separated from the anterior end by a short partition or 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 Buffalo Society of Natural Sciences. Buffalo, N. Y. : The Society
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