Maryland Geological Survey 119 



principal contributors have been Dawson/ Newberry/ and Fontaine.' 

 More recently Dr. Knowlton * has published an account of some interest- 

 ing additions to this flora. The combined list after eliminating part of 

 the synonyms is as follows: 



Abietites longifoUus (Font.) Berry 



Acrostichopteris fimbriata Knowlton 



Adiantum montanense Knowlton 



Angiopteridium canmorense Dawson 



Anomozamites acutiloba Heer ? 



Anomosamites sp., Dawson 



AnthoUthes horridus Dawson 



Asplenium Dicksonianum Heer (^ Onychiopsis Oospperti f) 



Asplenium martinianum Dawson 



Baiera brevifolia Newberry 



Baiera longifolia (Pomel) Heer = Baiera cretosa Schenk 



Baieropsis sp., Dawson = Acrostichopteris ? 



GarpoUthus virginiensis Fontaine 



Carpolithus sp., Dawson 



Cephalotaxopsis sp., Dawson 



Ghiropteris spatulata Newberry 



Chiropteris Williamsii Newberry 



GladophleMs angustifoUa Newberry 



CladophleMs Browniana (Dunk.) Seward 



GladophleMs constricta Fontaine 



GladophleMs Fisheri Knowlton 



GladophleMs distans Fontaine 



GladophleMs virginiensis Fontaine 



GladophleMs virginiensis montanensis Fontaine 



GladophleMs heterophylla Fontaine 



^ Dawson, On the Mesozoic Floras of tbe Rocky Mountain region of Canada, 

 Trans. Roy. Soc. Can., vol. iii, sec. iv, 1885, pp. 1-22, pi. i-iv. Dawson, Creta- 

 ceous Floras of the Northwest Territories of Canada, Amer. Nat., vol. xxii, 

 1888, pp. 953-959. Dawson, Correlation of Early Cretaceous Floras in Canada 

 and the United States, Trans. Roy. Soc. Can., vol. x, sec. iv, 1892, pp. 79-93. 



^Newberry, School of Mines Quarterly, vol. viii, 1887, p. 329. Newberry, 

 Flora of the Great Falls Coal Field, Montana, Amer. Journ. Sci. (iii), vol. xli, 

 1891, pp. 191-201, pi. xiv. 



^Fontaine, Description of Some Fossil Plants from the Great Falls Coal 

 Field of Montana, Proc. U. S. Natl. Mus., vol. xv, 1892, pp. 487-495, pi. Ixxxii- 

 Ixxxiv. Fontaine, in Ward, Mon. U. S. Geol. Surv., vol. xlviii, 1906, pp. 284- 

 315, pi. Ixxi-lxxiii. 



* Knowlton, Description of a Collection of Kootanie Plants from the Great 

 Falls Coal Field of Montana, Smith. Misc. Coll. (quarterly issue), vol. 1, pt. 1, 

 1907, pp. 105-128, pi. xi-xiv. 



