Cretaceous Floras of Canada. 955 
necting links between the different members, but giving a satisfac- 
tory basis for the knowledge of the succession of plants and for the 
determination of the ages of formations by their vegetable fossils. 
The successive series may be tabulated as follows, with references 
for details to the fuller table in my memoir of 1883:— 
SUCCESSIVE FLORAS AND SUB-FLORAS OF THE CRETACEOUS IN 
CANADA, 
(IN DESCENDING ORDER.) 
PERIODS. FLORAS AND SUB-FLORAS. REFERENCES. 
Upper Laramie and Por- Platanus beds of Souris River and Cal- 
: ary. Report Geol. Survey of Can- 
cupine Hill Series........... { cae for 1879, and present memoir, 
Danten:.. Middle Laramie or Wil- 
low Creek Series, 
Lemna and Pistia beds of bad lands of 
Lower Laramie or St, Ma. 49th Parallel, Red Deer River, etc. 
L| ry River Series... eg gane ee 49th Parallel 
an s memoir, 
f Fox Hill Series Marine. 
Fort Pierre Series.............. Marine. 
and Br ia beds of S. Sas- 
enem a Helly Hiver Series. (See gyen Belly River, ete., with 
4 Lignites. This memoir. 
Coal „Measures of Nanai-| f{ Memoir of 1883. Many Dicotyledons, 
L| mo, B.C., probably here.. Palms, ete. 
Dunvegan Series of Peace 1 reat of 1888, Many Dicotyledons, 
Obhonianian River, (See note)... Cycads, ete, 
: leaves, similar to 
Mill Creek Series of Rocky | { Disoty ledomous 
- MUN tA seeiis Kapir Group of the U. S. This 
Suskwa River and Queen 
Charlotte Island marion, aes Sree Pines, a few Dicotyledons. 
Neocomian & Intermediate Series of Report Geol. Survey. This memoir. 
Urgonian..... Rocky Mountains........... 
Kootanie Series of Rocky lE Aenere Pines and Ferns. This 
Li MOURtKIAED CU memoir. 
A E ot Aas SR Sg TG ety 
Norr.—Though the flora of the Belly River Series very closely resem- 
bles that of the Lower Laramie, showing that similar plants existed 
e 
strata, as is now believed on stratigraphical grounds, the flora must have 
been remarkably persistent. The Dunvegan series of Peace River prob- 
ably corresponds in time with the M Niobrara G farther South 
v 
