[PENHALLOwW] CRETACEOUS AND TERTIARY PLANTS OF CANADA 47 
20 m., and 54 deg. 30 m., Mr. Tyrrell has divided the formation into 
(1) the Edmonton — an estuarine series referable to the Cretaceous — 
and (2) the Paskapoo — referable to the Eocene Tertiary, a fresh water 
series of sediments characterized by fresh water mollusca, etc. 
The evidence collected by Mr. Tyrrell seems to point to the fact 
that the Tertiary Epoch was ushered in with the commencement of the 
Paskapoo series which stands as the representative of the European 
Eocene. During this time a great thickness of sandstones and shales 
was laid down without any break or unconformity. This series also 
is held to include Dr. Dawson’s Porcupine Hills and Willow Creek 
series, together with all but the lowest 700-900 feet of the St. Mary 
River series. The Paskapoo series embraces the region of the Red 
Deer and Blind Man Rivers. “The bed consists of more or less hard, 
light grey or yellowish, brownish weathering sandstone, usually thick 
bedded, but often showing false bedding; also of light bluish-grey and 
olive sandy shales, often interstratified with bands of hard, lamellar, 
ferruginous sandstone, and sometimes with bands of concretionary blue 
limestone. The whole series as shown by its invertebrate fauna, is 
of fresh water origin.”1 The plants derived from the explorations of 
1885-86 were determined by Sir William Dawson and published without 
illustrations. Combining the earlier list as given by Tyrrell,’ with 
the later list published in the following year by Sir William Dawson,’ 
and omitting duplications, the recognized species were as follows: — 
Onoclea sensibilis, Newby. 
Sequoia langsdorfii (Bret.), Heer. 
7 nordenskioldii, Heer. 
couttsiæ, Heer. 
Podocarpites tyrrellii, Dn. 
Taxodium occidentale, Newby. 
Platanus nobilis, Newby. 
Corylus macquarrii (Forbes), Heer. 
Quercus sp. 
Populus acerifolia, Newby. 
ns artica, Heer. 
ss richardsoni, Heer. 
genetrix, Newby. 
os nervosa (?), Newby. 
Salix laramiana, Dn. 
Ficus sp. 
Carya antiquorum, Newby. 
Nelumbium saskatchuense, Dn. 
Trapa borealis, Heer. 
Viburnum saskatchuense, Dn. 
asperum, Newby. 
Catalpa crassifolia, Newby. 
Sapindus sp. 
“6 
1 Rept. Geol. Surv. Can., N. Ser., II. (1886), 135 E. 
2 Ibid, 136 E. 
3 Trans. R. Soc. Can:, V. (1887), iv., 35. 
