. Annual report. New York State Museum; Science; Science. 52 NEW YORK STATE MUSEUM Bothriolepis minor Leidy 1889 Bothriolepis minor /. .V. Xewberry. U. S. Geol. Sur. Monogr. 16: 112, pi. 20, fig. 6-8 1892 Bothriolepis minor E. D. Cope. Am. Philos. Soc. Proc. 30: 224 1899 Bothriolepis minor C. R. Eastman. N. Y. State Geol. 17th An. Rep't, p. 324, fig. 5 This species is readily distinguished from the preceding by its smaller size and very much finer ornamentation, the external surface being covered with fine, closely crowded, vermiculating ridges. Unfortunatel}^ it is known only by detache
. Annual report. New York State Museum; Science; Science. 52 NEW YORK STATE MUSEUM Bothriolepis minor Leidy 1889 Bothriolepis minor /. .V. Xewberry. U. S. Geol. Sur. Monogr. 16: 112, pi. 20, fig. 6-8 1892 Bothriolepis minor E. D. Cope. Am. Philos. Soc. Proc. 30: 224 1899 Bothriolepis minor C. R. Eastman. N. Y. State Geol. 17th An. Rep't, p. 324, fig. 5 This species is readily distinguished from the preceding by its smaller size and very much finer ornamentation, the external surface being covered with fine, closely crowded, vermiculating ridges. Unfortunatel}^ it is known only by detached plates, amongst which the head and appendages are excessively rare. The latter are of about the same relative proportions as in B. n i t i d a. Concerning the head shield it is stated by Cope that " one of the characters of the species is seen in the fact that the sensory grooves of the median occipital plate do not extend to the smooth articular border, but are separated from it by a band of sculpture. The pre- median plate is crossed by a groove which presents an Newberry. Antero-dorsome- abruot looD backwards at the ; dian plate with denuded ex- ' ^ ternai ornamentation. Cats- ^s Is couimonly the case \\\ thls class of remalus, kill sandstone; Delaware ^ ' county, ^-^f. antcro-dorsomcdian plate Is of more frequent occur- rence than any other, though seldom found entire. Its orientation may be easily determined by means of the V-shaped sensory canals which diverge from about the center of the plate, or, in case the superficial ornament is denuded, by means of the longitudinal keel which traverses the median line of the plate for about three fourths of its length. A specimen of this character is illustrated in the accompanying text figure. Formation and locality. Chemung group of Bradford county, Pennsyl- vania, and Catskill of Delaware count)'. New York. According to New- berry, a species similar to this, and perhaps identical with it, occurs in the De
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