. Carnegie Institution of Washington publication. 54+ FOSSIL TURTLES OF NORTH AMERICA. are 3 mm. or less in diameter. On the outer ends of these costals the pits are even smaller, and are arranged more or less in rows across the costals. On the nuchal the pits are small and shallow. To this species is referred the specimen represented by fig. 702. It was collected by the American Museum expedition into the Bridger deposits in 1903. The more exact locality is the eastern part of Grizzly Buttes, Wyoming. The number of the specimen is 5910. Only small portions of the carapace are missing. The med
. Carnegie Institution of Washington publication. 54+ FOSSIL TURTLES OF NORTH AMERICA. are 3 mm. or less in diameter. On the outer ends of these costals the pits are even smaller, and are arranged more or less in rows across the costals. On the nuchal the pits are small and shallow. To this species is referred the specimen represented by fig. 702. It was collected by the American Museum expedition into the Bridger deposits in 1903. The more exact locality is the eastern part of Grizzly Buttes, Wyoming. The number of the specimen is 5910. Only small portions of the carapace are missing. The median region of the nuchal is gone, and the second and third neurals. There are 8 pairs of costal plates, but the eighth pair is vestigial and might therefore be missing in other individuals ol the same species. The total length of the carapace is 286 mm., the width almost exactly the same. Originally the upper surface may have been about as convex as the carapace of Platypcltis ferox, of Florida. There is no preneural. The length of the first neural is 50 mm.; its width anteriorly, 31 mm., posteriorly, 16 mm. The fourth neural is 29 mm. long, 18 mm. wide. The fifth is 25 mm. long, 14 mm. wide. The sixth neural is pointed behind, 17 mm. long and of about the same width. It permitted the costals of the sixth pair to meet in the midline behind it. It is uncertain whether or not there was a small seventh neural. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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