

(SMogial 3mk^ of \k Statt ai |[eto |orli. 



PALAEONTOLOGY: 



Vol. V. Part I. 



LAMELLIBRANCHIATA 



L_ 



CONTAINING DESCRIPTIONS AND FIGURES 



OF THE 

 OF THE 



UPPER HELDERBERG, HAMILTON AND CHEMUNG GROUPS. 



By JAMES HALL, 



STATE GEOLOGIST. 



ALBANY, N. Y.: 



CHARLES VAN BENTHUYSEN & SONS. 

 1884. 



