<5>H 
/o 5 
M 7 N 2 * 
a ^ (Mopal SwrUeg of % State of gteto jgorft. 
p** 
r PALEONTOLOGY: 
Yol. Y. Part I. 
LAMELLIBRANCH I AT A 
II. 
TIEIXIT AAHSTZD ELITES. 
CONTAINING DESCRIPTIONS AND FIGURES 
OP THE 
DIMYA_R,IAk_ 
OF THE 
UPPER HELDERBERG, HAMILTON, PORTAGE AND CHEMUNG GROUPS. 
By JAMES HALL, 
STATE GEOLOGIST. 
' 
<t> % 
\ Y-'lf ■ 
<r>. 
J-J-u 
R%- 
: - 
ALBANY, N. Y.: 
CHARLES VAN BENTHUYSEN & SONS; 
1885. 
SST 
