AR ae v 
FOSSILS. 
| Cretaceous Invertebrata and 
Tertiary Vertebrata 
. Dakota, Nebraska, and Wyom as 
described by Cope, Marsh, ade, poe stoke, 
| Placenticeras, Nautilus, Scaphites, 
| Baculites, Teredo, Turtles, Teeth 
and Skulls of the Titanotherium, 
| Oreodon, Mesohippus, Acerathe- 
rium, Hyracodon, Elotherium, Car- 
ffyracodon nebrascensis. A nivora, etc. 
Green River Fossil Fish; ‘fifty varieties Fossil Leaves of Dakota Group 
named by Lesquereux. Black Hills Minerais in large variety. Jndian Relics, 
both ancient and modern. Large stock of everything. Send for illustrated 
catalogue with prices. Wholesale and Retail. Colleges, large collectors, 
amateurs, museums, and dealers supplied. 
EW STILWELL. 
DEADWOOD, SOUTH DAKOTA. 
Mention AMERICAN NaTupaLst 
WANTED. = BAK aea of the 
Naturatist. November ’83, April 
and December ’8 5, October, November and 
December ’87, all or part of ’77. 
Twenty-five cents will be paid for the 
Index to Vol, XII, which was issued with the 
January number of Vol. XIII. 
Persons having any or all of these for 
sale will please write us, stating price at. 
which they hold them. 
FERRIS BROS., Publishers. 
