527 



Orthis 



hinge views of common specimen. — Widely distributed in the 

 Coal measures from Indiana to|Nebraska and also in the Car- 

 boniferous of the Rocky Mt& . XIIL — In Pennsylvania, in the 

 Black Fossiliferous limestone of the Barren measures (250' 

 beneath the Pittsburgh Coal) in Fayette Co. K 3,309; L, 

 35.— X/F. 

 Orthis pectinella, Conrad. Ann. Et.^N. Y. 1840. BlacJcriver 



and 

 Tren- 

 ton. 

 Geol. 

 '02 Can- 

 ada, 

 1863, page 165, figs. 147 a, J, c— 

 Rogers, page 818, fig. 602. (Con- 

 rad, Ann. Rept. N. Y. — Owen, 

 Wise, pi. 2 B, fig. 11, Prairie du 

 Chien. II c,— 00, p. 231, Speci- 

 mens in the Cabinet, 206-3 (very 

 poor) from Martin's Creek quar- 

 ries, Northampton Co., Pa. C. E. 

 Hall found colonies of this shell in the Delaware river quarries at 

 Howell's Cotton Mill, and in the lower beds of the Churchville 

 quarry, which underlie the encrinal beds. D3, p. 162. Trenton^ 

 lie. Ewing reports (doubtfully) an Orthis pectenalinea (per- 

 haps 0. pectinella) from the Trenton in Centre Co. T4, p. 424. — 

 II c. — 210-44 a (good specimen of this species, or its variety 

 (9^^^Z^5.^), 210-70 (two very good specimens, one quite large), 

 210-134 (good specimen), 210-140 (one or two very good), all 

 in Fellows' 1876 Collections at Bellefonte, Centre Co., Pa. from 

 Trenton limestone.. II c. - \ 



Orthis penelope. Hall. 13th An. Rt. l^^O^ Hamilton. — In 



Yiiic. ^i^i^tew 1 ^ifc^ ■ 2 P e n n s y 1 V a nl a , 



Huntingdon C o . 

 Oneida township^ 

 along Murray's 

 Krun, in Middle 

 Hamilton leds., T3, 

 p. 261.— In Perry 

 Co., Barnett's mill, 



Ow. O.p. 



