122) OC. A. White—Floral Types in the Laramie Group. 
them as identified by myself, cemnraye them with the type 
specimens or other authentic examples 
Unio sate Meek & Hayden. Viviparus peepee M. & H. 
Unio senectus White. Viviparus Leidy & H. 
Corinda mactriformis M.& Viviparus retus Se 
Thaumastus linneformis M. rs H. Viviparus Tleai | M. & H. 
Pitparee oaks M. & H. 
Professor EK. D. Cope, who has examined the vertebrate 
remains which I collected with the foregoing mollusca, recog- 
nizes the former as belonging mostly to the same species which 
he had previously obtained from that peony and he gives me 
_ the oe ee. determinations of them 
Di sstensiawee 0 specie 
OSAUTUS. wie species. 
Ghalontins: three s species. (Trionyx, Emys and Pereyra 
Ganoids, one species. (Clastes.) 
Mr. Lester F. Ward, who has charge of ae fossil plants of 
the U. 8. Geological "Survey, and who is making a special 
study of those of the Laramie Group, has given me a list of 35 
species which he has identified to his entire satisfaction with 
species heretofore published. The larger part of these are spe- 
cies which Dr. Newberry published, as before mentioned. 
From that list I select the uerien species named below for the 
purpose of illustrating the subject of this article: 
PARTIAL LIST OF hase PLANTS OBTAINED FROM THE LARAMIE STRATA 
THE YELLOWSTONE VALLEY.* 
Yellowstone valley. European. Other Laramie localities. 
Equisetum arcticum Heer. Miocene, Spitzbergen. 
Sequoia Langsdorffit Heer. " . Black Buttes, Sout’rn Wy. 
Phragmites Giningensis A. 
y Switzerland. s s 
Gymnogramma Haydenti Lesqx. Golden Colorado. 
ge ~— Heer. ‘ Switzerl’d & Green’ld. 
ericana Walt. 
“divin rae ; 
Corylus rostrata Ait. (liv- 
Platanus Guillelme Gépp. . Greenland. [den, Colorado. 
Magnolia tenuinervis Lesq’x. BI’k Buttes, Wy. and Gol- 
Eleodendron Helveticum 
eer. e Europe. 
eae Gandini — ce “ 
Juglans rugosa Lesq ‘Black Buttes, S. Wyom’g. 
Juglans biltnica sole * : : 
Trapa microphylla Lesq’x. Point of Rocks, 8. Wy. 
Three important facts are shown by this partial list of the 
fossil plants from the Laramie strata of the Yellowstone valley. 
* The other “eee of plants found associated with these are, as before stated, 
e types, but they are omitted from this list because, so far as 
lly classification, 
os of recognized Mioce 
nee the are are concerned, reference is made especia 
