40 
LAKAMIE BASIN, WYOMING. 
The Legumen is apparently congeneric with Meek's Baroda wyomingensis. New col- 
lections are thus gradually increasing the number of forms common to the Ripley and 
Montana formations, although the specific differences between these two presumably 
contemporaneous faunas are still so numerous that we must assume either considerable 
climatic differences or partial isolation of the two areas of deposition. 
Fossil plants were obtained on the Laramie Plains at three other localities where the 
stratigraphic position is not so plainly evident as at the localities already mentioned. 
One of these is near Dunn's ranch on Laramie River, 6 miles east of Harpers, where the 
following species were collected: 
Myrica torreyi Lx. 
Quercus acrodon Lx. 
Ficus planicostata Lx. 
Celastrus n. 
Salix sp. 
Spathites sp 
sp- 
it is almost certain that this locality is very near the coal and plant bearing horizon 
already discussed, yet none of the plants are common to the two localities. 
Near the old stage road on the north fork of Dutton Creek, between Rock and Cooper 
creeks, there is a small coal bed that has been mined to some extent for local use. It 
is probably the one spoken of as the "Cooper Creek coal" in the reports cited. The 
shale overlying the coal and the still higher sandstone both contain fossil plants, among 
which the following, mostly from the shale, were recognized: 
Aspidium n. sp. 
Asplenium n. sp. 
Woodwardia n. sp. 
Brachyphyllum n. sp. 
Sequoia reichenbachi Gein. 
Trapa (?) microphylla Lx. 
Ficus sp. 
Castalia n. sp. 
Asimina eocenica Lx. 
Diospyros (?) ficoidea Lx. 
The evidence afforded by these plants, while somewhat conflicting, tends to place 
this horizon quite low down in the series, or approximately similar to the plant horizon 
at Harpers station. Two of the species (Brachyphyllum n. sp. and Sequoia reichenbachi) 
are found at JIarpers station and two others of the named species (Trapa (?) micro, 
phylla and Diospyrus (?) ficoidea) are found at Black Buttes and Point of Rocks. The 
latter species are also found in the Fort Union beds, but in the lower horizon. The 
other named species (Asimina eocenica), depending on a single example, has been 
found in the Denver beds at Golden, Colo., and at Carbon, Wyo. The unnamed species, 
as far as they have affinities, appear to approach more closely to those of the so-called 
true Laramie. 
The associated strata are not exposed in the immediate neighborhood, but about 
3 miles to the southwest, near the old stage road crossing Cooper Creek, beds that are 
certainly higher in position are very fossiliferous, yielding a characteristic Fox Hills 
fauna, as follows: 
Micrabacia americana M. and H. 
Ostrea sp. 
Anomia sp. 
Inoceramus cripsii var. barabini Morton. 
Inoceramus sagensis var. nebrascensis 
Owen. 
Avicuia linguseformis E. and S. 
Avicula nebrascana E. and S. 
Gervillia sp. 
Modiola galpiniana (E. and S.). 
Pectunctulus wyomingensis (Meek). 
Protocardia subquadrata (E. and S.). 
Syncyclonema rigida (H. and M.). 
Lucina subundata H. and M. 
Crassatellina sp. 
Tancredia americana M. and H 
Calhsta (Dosiniopsis) nebrascensis M. and 
H. 
Tellina scitula M. and H. 
Goniomya americana M. and H. 
Corbulamella gregaria M. and H. 
Martesia sp. 
Lunatia concinna (H. and M.). 
Capulus sp. 
Nautilus dekayi Morton. 
Baculites ovatus Say. 
Scaphites nodosus (Owen). 
