373 



Macro. 



1« MAOROCHEILUS PRIM I GENIUS. 



Trans. St. Louis Acad. Sci., 1858, p. 202.) Collett's Indiana 

 1883, plate 34, figs. 1, 2, natural size^ large specimen from 

 Iowa. — Upper Coal Measures^ X V? 



Macrocheilus primigenius. Conrad. See fig. 3 in last 



wood cut above, 

 from CoUett's In- 

 diana Report of 

 1883, plate 34. 

 ( Sty lifer primi- 

 genia)^ Conrad, 

 Trans. Geol. Soc- 

 Pa.Vol. plate 1,12, 

 fig. 2. Macro- 

 cheilus inhahilies 

 ,^A MACRoc«T?;:t;rpmMiecNius Morton). — Co a I 

 measures ; somewhat common shell from Ohio to Iowa. Col- 

 lett.— Recognized by Heilprin in the collection of fossils from 

 the carboniferous Mill Creek limestone bed (1000' above the 

 conglomerate), near Wilkesbarre, Pa., in the possession of the 

 Wyoming Hist. Society. See Geol. Sur. Pa., An. Rt. 1885, 

 pages 446, 457.— Found by J. J. Stevenson in the Coal Meas- 

 ures of Western Pa. and W. Va. (KKK, p. 310); in the DecJcer 

 Cr, shale (under Mah. SS,) at Morgantown. (L, p. 37.) Also in 

 the Crinoidal limestone. (JT/F), 250' beneath Pittsburgh coal. 

 Fayette Co. (L, p. 75), and on the Conemaugh (114 p. 78). 

 It occurs in Ferriferous limestone^ Beaver Co. (Q, p. 62); Law- 

 rence Co. (QQ, p. 47, 106) ; Mercer Co. (Q3, p. 25) ; northern 

 Butler (V, p. 146).— X//7, XIV. 



Macrocheilus suboostatus ? Owen. Geol. Wis., Iowa and 



Minn. 1852, pi. 2, fig. 9, 

 a cast bearing a strong 

 likeness to D'Orbigny's 

 species (Verneuirs^i^(?- 

 cinum Schlotheimii) in 

 European Devonian 

 but Owen's is from L. 

 Sil. magnesian lime, of 

 Iowa. II G. 



Mac. 



