The Fort Union Formation. — Weed. 207 
"Almost all the species in the list were originally obtained 
near Fort Union on the Missouri river. Vixnparus trochi- 
formis came from 10 miles below Fort Union. It has also been 
found at the base of the Wasatch Eocene at several localities 
in central Utah. Gonio/)asis tenuicarinata has the same dis- 
tribution and also occurs in the Laramie on Crow creek, 
northern Colorado. The types of Canipeloma multiUneota 
came from Fort Union beds at Fort Clark, Dakota. It has 
been found on Heart river, Dakota, and in the Laramie of 
Crow creek, Colorado. The original locality of Vnio prima'- 
vus is south of Cow island, upper Missouri river, Montana. 
Unio danff was described from the Judith River beds at the 
mouth of the Judith river. Two of the species pass iip into 
the Tertiary." 
Vertebrate remains have not been found in the Fort Union 
beds of the Crazy mountains, only a single rolled and water- 
worn fragment having been seen. This fragment of bone was 
turned over to Mr. F. A. Lucas and by him shown to Prof. E. 
I). Cope. Mr. Lucas reports as follows: "Professor Cope says 
the sandstone is Laramie and the bone is part of the humer- 
us of a dinosaur." 
The plant remains of these beds are abundant in certain 
localities, though but small collections have been made from 
three places, viz., (1) north slopes of Fairview peak, the most 
southern summit of the mountains; (2) from the foothills on 
Sweet Grass creek; (3) from the foot slopes near Big Timber 
creek. These collections have been examined by Prof. F. H. 
Knowlton, who reports that the species are in general of F'ort 
Union types, that is, belong to, or most closely resemble, the 
flora of the beds at the mouth of the Yellowstone. 
Of the specimens from Big Timber creek he says : * "A 
small collection of fossil plants obtained at the foot of the 
Crazy mountains on Big Timber creek. Park county. Mon- 
tana. The collection numbers nine specimens which 1 have 
been able to identify as follows: A single sijecimen each of 
Sequoia /an(/sdorJii Heer and Poj>uti(.s (jenatrix Newberr}^ and 
four specimens of Ulniiis .s/»ecio.sa? Newberry, with fragments 
of a Plafunna (possibly F. nobi/is). a J'/irayntites^ und Ulniiis 
sp^ 
*Bull. 105, U. S. G. S., p. 63. 
