STRATIGRAPHIC POSITION OF JUDITH RIVER FORMATION 549 
exactly like those near Crawford’s ranch on Fish Creek, which, 
there the same as here, dip beneath badlands exposures of Belly 
River beds, having a total thickness of about 180 feet. The Belly 
River beds, here, closely resemble those seen in the Fish Creek sec- 
tion and, like them, pass conformably beneath the soft dark shales 
of the Pierre, all dipping gently toward the southeast. The Belly 
River beds contain fossil wood in abundance near the base of the 
outcrops, and a few feet higher in the section the plants were col- 
lected which were described by Dr. Knowlton‘ and said to exhibit 
an undoubted relationship with the flora of the Dakota group and 
very little affinity with that of the Laramie or Fort Union as they 
would if from the true Judith River beds. There can be no doubt 
as to the Belly River age of these beds. They contain the usual 
fresh-water shells and the overlying beds contain a characteristic 
Pierre fauna referred by Dr. Stanton to the Bearpaw. The beds 
between the top of these Fort Pierre shales and the Fort Union 
horizon, from which a typical Fort Union flora was obtained and 
which Dr. Stanton says? ‘“‘should, from their stratigraphic position, 
contain the equivalent of the Fox Hills and the Laramie as well as 
the Livingston formation,’ are of Lower Fort Union age—that is, 
are referable to the Lance formation. These (Lance) beds rest 
immediately upon the Pierre without any Fox Hills or Livingston 
beds between them, and as for the Laramie, no beds referable to 
this formation have yet been found in this region. A careful 
search was made for Fox Hills fossils, but not a trace could be found 
of them nor of anything referable to the Livingston, so, as at 
Forsyth, which was the last place visited by us, the Lance formation 
is in immediate superposition on the shales of the Fort Pierre. 
t Bull. U.S. Geol. Surv. No. 257, 1905, pp. 120-55. 
2 Tbid., p. 58. 
