722 SCIENTIFIC RECORD FOR 1885. 



Dawson, J. W. (Sir). — A Jurasso-Cretaceous Flora in the Rocky Mount- 

 ains. Science, vol. v, No. 125, pp. 531, 532. June, 1885. Cambridge. 

 Notes the discovery of this fauna l)y Dr. G. M. Dawson, in the Eocky 

 Mountains, on the branches of the Old Man River, Martin Creek, Coal 

 Creek, and one other locality far to the northwest on the Suskwa River. 

 Sir William proposes for the beds containing it the name of Kootanie 

 group. They can be traced for a distance of 140 miles north and south 

 in the troughs of the ijalseozoic formations of the mountains. The plants 

 found are conifers, cycads, and ferns, the cycads being especially 

 abundant. Some are identical with species described by Heer from 

 the Jurassic of Siberia, while others occur in the Lower Cretaceous of 

 Greenland. No dicotyledonous leaves have been found in these beds. 



Dawson, J. W. (Sir). — The Cretaceous Floras of Canada. Nature, vol. 



XXXIII, lip. 32-34. 1885. London and New York. 



From the advance sheets of a memoir to appear in the Transactions 

 of the Royal Society of Canada. The author first discusses the geologi- 

 cal relations of the floras, and gives, on page 33, a table showing the 

 '' successive floras and subfloras of the Cretaceous in Canada (in de- 

 scending order "). This table ranges from the Upper Laramie or Porcu- 

 pine Hill series, containing the Platanus beds of Souris River, Calgary, 

 down to the Neocomien (?) Kootanie series of the Rocky Mountains, con- 

 taining cycads, pines, and ferns. The author then dicussesthe physical 

 conditions and climate indicated by the Cretaceous floras. 



Dawson, J. W. (Sir). — Sir William Dawson on the Mesozoic Floras of 

 the Rocky Mountain Region of Canada. Amer. Nat., vol. xix, pp. 

 G99, 700. July, 1885. Philadelphia. 



An abstract of a paper read before the Royal Society of Canada, May, 

 1885. The paper refers more particularly to a remarkable Jurasso-Cre- 

 taceous flora recently discovered by Dr. G. M. Dawson in the Rocky 

 Mountains, and to intermediate groups of plants between this and the 

 Middle Cretaceous, serving to extend greatly our knowledge of the 

 Lower Cretaceous flora, and to render more complete the series of plants 

 between this and the Laramie. {See Dawson, Sir William.) 



Dawson, J. W. (Sir). — On the Mesozoic Floras of the Rocky Mountain 

 Region of Canada. Trans. Boy. Soc. Canada (vol. iii), section iv, 

 1885, pp. 1-22, pis. i-iv. 1885. Montreal. 



Considers the flora of the Laramie group to be that of the newest 

 Cretaceous. Describes a new flora of Jurasso-Cretaceous age found by 

 Dr. G. M. Dawson, which undoubtedly represents the flora of the lowest 

 Cretaceous, which has not hitherto been recognized in Western America, 

 and proposes to name it the Kootanie series. The following new forms 

 are described : Dicksonia sp., Asplenium Martinianum, Zamites Montana, 

 Z., sp., Sphenosamites sp., Salisburia (Gingko) nana, Taonurus incertus ; 

 from the intermediate series, StercuUa vetustulaj from the Mill Creek 



