788 SYSTEMATIC PALEONTOLOGY 



Described originally from the Koine beds (Urgonian) of Greenland by 

 Professor Heer, this author soon afterward recorded it from the Upper 

 Cretaceous Atane beds of that country. It has been recorded by Nathorst 

 from the Neocomian of Mexico and it is present in the Kootenai forma- 

 tion of Montana. It is a member of the Shasta flora of the Pacific Coast 

 (Horse town beds), and is probably represented in the Fuson formation 

 of eastern Wyoming by what Professor Fontaine calls Sequoia gracilis. 

 In the Upper Cretaceous, remains in every way identical with these Lower 

 Cretaceous occurrences are present in the Magothy formation at Gay 

 Head, Marthas Vineyard, and in Maryland, as well as in the Tuscaloosa 

 formation of Alabama. A similar occurrence is that in the Emscherian of 

 Italy recorded by Bozzi (op. cit.). After much comparison and study the 

 writer is unable to formulate good characters for the separation of the 

 later from the earlier Cretaceous forms that have been referred to this 

 species. 



The Upper Cretaceous forms resemble greatly some of the homotaxial 

 remains referred by Heer and others to Sequoia subulata Heer and to 

 Sequoia fastigiata (Sternb.) Heer. They are, however, different from the 

 types of both these species, and it seems probable that the later identi- 

 fications include diverse species under these names. The fragments 

 figured in 1876 by Lesquereux from the Dakota group as S. fastigiata are 

 also quite similar to the eastern remains referred to Sequoia ambigua. 



Occurrence. MAGOTHY FORMATION. Round Bay, Anne Arundel 

 County. 



Collection. Maryland Geological Survey. 



SEQUOIA REICHENBACHI (Geinitz) Heer 1 



Araucarites reichenbachi Geinitz, 1842, Charakteristik d. Schichten u. 



Petrefacten sachs.-bohm. Kreide, Heft iii, p. 98, pi. xxiv, fig. 4. 

 Cryptomeria primwva Corda, 1846, in Reuss, Versteinerungen bohm. Krei- 



def., Ab. ii, p. 89, pi. xlviii, figs. 1-11. 



1 Three citations, involving a change in the specific name of this well-known 

 form, are here omitted as being too uncertain: Conites familiaris Sternberg, 

 Bergeria minuta Presl, and Sedites ? rabenhorstii Geinitz. A complete sy- 

 nonymy of this species has been given in the writer's account of the Lower 

 Cretaceous flora of Maryland. After giving the earlier names, only Upper 

 Cretaceous citations are given in the present connection. 



