1 882.] Tertiary Flora of the Western Territories. 103 



plants, the relation to the flora of the Dakota group is shown by- 

 only one identical species, a fern, which is also found at Atane 

 and Moletin, while analogy is marked by two species of Myrica 

 and a Proteoides. 



Moletin, in eighteen species described of its flora, has one fern, 

 four conifers, one monocotyledonous and twelve angiospermous 

 plants, these, therefore, constituting two-thirds of the flora. 



Though the number is small, the flora is related to that of the 

 Dakota group by identity of one fern, one conifer, both also 

 recognized at Atane, and of two dicotyledonous species. This 

 is a remarkably close relationship indeed, more intimate than that 

 between the Quedlinburg and Moletin floras, and it is positive, 

 for the species indicating it, Gleichoiia fcurriana, Finns quensledti, 

 Aralia formosa and Magnolia speciosa, all described by Heer, are 

 of easily identifiable characters. 



The quader-sandstone of the Hartz is, by its numerous species 

 of Credneria, related to the no less numerous representatives of 

 the genus Protophyllum of the Dakota group. 



In the Monde des Plantes, by Saporta, the author, who has had 

 opportunity to compare specimens of plants of the Cenomanian of 

 Bohemia with those of the more common and characteristic spe- 

 cies of the Dakota group, remarks, p. 202, that the flora of this 

 group presents, if not identical species with those of Bohemia and 

 Moravia, at least a number of equivalent forms. 



Mr. Feistmantel says, in a note to Professor Heer, 1 that the 

 lower division of the Cretaceous of Bohemia (Perutzer-Schichten) 

 is Cenomanian. After naming a number of plants found in the 

 sandstone of this formation, he adds that the beds of shale, partly 

 between, partly above the sandstone, contain remains of plants, 

 ferns, conifers and a mass of dicotyledonous leaves and fresh- 

 water shells. Of the forty-nine species determined by him, nine 

 are also at Moletin, seven at Niedershoena, while three ferns and 

 conifers are present in the Lower Cretaceous of Groenland, and 

 four in the Upper, that of Atane. Of the same plants the Da- 

 kota group has five, positively identified: Gleichenia kurriana, 

 Pinns quenstedti, Sequoia Rcichenbaclii, Magnolia speciosa and 

 Aralia formosa. A sixth might be added, Sequoia fas tigiata, but 

 its identification is less definite. And still with the flora of Nieder- 

 shoena, that of the American Cretaceous is related by one identi- 



