. Carnegie Institution of Washington publication. D E RMATEMYDIIX-!-:. 259 ma' er>d of the first and third left cos- tals, parts or wholes of the second, c. p. 1, c. p. -i, c. p. c, costal plates: n. 1, , n. 4, neural hones. . , .. . __. . r r 3 third, fourth, and fifth right costals, and portions of other costals whose positions can not be determined. The first neural has a length of about 57 mm.; its width is 45 mm.; its thickness, 8 mm. The third and the fourth have each a median length of 60 mm. and a maximum width of 37 mm. Each is excavated in front for the preceding neural. Each
. Carnegie Institution of Washington publication. D E RMATEMYDIIX-!-:. 259 ma' er>d of the first and third left cos- tals, parts or wholes of the second, c. p. 1, c. p. -i, c. p. c, costal plates: n. 1, , n. 4, neural hones. . , .. . __. . r r 3 third, fourth, and fifth right costals, and portions of other costals whose positions can not be determined. The first neural has a length of about 57 mm.; its width is 45 mm.; its thickness, 8 mm. The third and the fourth have each a median length of 60 mm. and a maximum width of 37 mm. Each is excavated in front for the preceding neural. Each has a thickness, where it joined the costal, of 10 mm. The first costal is 80 mm. wide; the second, 56 mm.; the third 59 mm.; the fourth, 55 mm. On the lower side of the first there is the base of a strong rib- head, and in front of this a rough articulation for the first rib. The rib-heads of the other costals are very feebly developt. The sulci between the horny scutes are moderately distinct. The second vertebral had a length close to 105 mm. and a width about equal to the length. The first vertebral must have been considerably wider than the second. The third vertebral appears to have had a length of 115 mm. and a width close to 95 mm. As in Z. striatula, the marginal scutes extend high up on the distal ends of the costal bones, as may be seen from the figure. They pursue an irregular 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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