. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Prob. 770 part of head, with glabellar furrows ; 14, entire head, some fur rows; 15, enlarged twice^ tail of small individual; 17, ditto showing internal surface and doublure ; 20, profile view of 15 plate 23, fig. 30, nearly entire trilobite; 31, tail of a very large specimen. The head is covered with low pimples (tubercles) each ring of the chest and body is covered with granules, some times as if in two rows. Whole trilobites are rarely found and their cru
. A dictionary of the fossils of Pennsylvania and neighboring states named in the reports and catalogues of the survey ... Paleontology. Prob. 770 part of head, with glabellar furrows ; 14, entire head, some fur rows; 15, enlarged twice^ tail of small individual; 17, ditto showing internal surface and doublure ; 20, profile view of 15 plate 23, fig. 30, nearly entire trilobite; 31, tail of a very large specimen. The head is covered with low pimples (tubercles) each ring of the chest and body is covered with granules, some times as if in two rows. Whole trilobites are rarely found and their crusts were so thin and tender that they were easily torn away; the movable cheeks also parted from the head after death, so that only one perfect specimen was found by Hall in several hundreds collected. The species scarcely varies at all, and is quite distinguishable from P, curmmarginatus which looks like it. It has been collected at a great many places in New York from the Hamilton shales^ and lully lime- stone leds, VIII c^ d. — In Pennsylvania, Perry Co., one col- lected by Clay pole, at Burnett's mills (spec. 5-67) from Hamil- ton upper shales, VIIIc; and six others at Slipping Rocks, west of Mexico P. O. (spec. ,-55).—From Marcellus limestone^ VIII a.—Possibly spec. 12584 (151-3) found one mile northeast of Bridgeport, in Marcelhts. Villa ? c, f. Proetus parviusculus, Hall, Pamphl. 1866, Cincin. group, /5 20th and 24th reports N. Y. State cabinet. Pal. Ohio, Vol. 2,1875, page 109, plate 4, fig. 18, enlarged four lengths, type speci- \i men; surface smooth or very finely gran- « ulose; unlike all other American species .1 of trilobite; differs from the the Bohe- mian P, sGulptus^ Barrande, by having one more thoracic seg- ment, 10 (P. So, has 9); differs strongly from Meek's P. spur- locU, Pal. Ohio, I, p. 161, pi. 14, fig. 12. /// 5. Proetus planimarg^inatus. Meek. Proc. Acad. J^at Sci.,. VIHa. Please note that these images are extracted from scanned page im
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