Amni. 



24 



Amnicola limosa. Say. Recent shell marl at Harmon- 

 burg, Crawford county, Pa. I. C. White's Report Q-t, p. 41. 

 Post-tertiary. 



Ampliigenia elongata {Pentamerits eloiigatiis) Vanuxem, 



page 132. fig. 31, 1. 

 Copied by Hall 

 on plate, fig. [04, 

 not common 

 western New 

 I York. VIII a. 

 fUpper Helder- 

 berg formation, 

 and Schoharie 

 grit. Variety, 

 undulata; Hall, vol. IV, 1867, vari- 

 ety sibbtrigonalis. See Meganteris 

 subtrigonalis. Hall, 10th Rt. of 

 Regents, 1857. Vanuxem says it is 

 diffused throughout the formation 

 and confined to it. Some specimens 

 are nearly five inches long. 



m 



Amphipeltis paradoxus, Salter. 

 ^_ . , ^ /' Geology, 1868, p. 523, fig. 180, 



bnplupdtis paradoxus. ^^-^ t//?/9 m. t i i ia 



^j\\\ ..^MiiF'^W^ crustacean, allied perhaps to tJ 





"szs 



Dawson's Acadian 



a 

 the 



modern Stomapods^ found in the 

 Devonian plant-beds of St. John, 

 N. B., with the little Lurypferus 

 pulicaris^ Sjnrorhis^ ct'c. — VIII 



AmpUexus ? cruGifor7nis. See Zaphrentis cruc. VIII a. 



Amplexus shnmardi ( Cyathophyllum shitmardi. M. Ed- 

 ^^ wards, Mon. des Polyp, foss. Niagara,) A. WinchelFs 

 P® GeoL Studies, 1886, page 204, fig. 114.— F///^ Niag- 

 ara limestone formation. The Niagara and Clinton 

 formations are mingled in Pennsylvania, but most of 

 ^^1^ the corals grew only in the Western waters. 



