Berry: SPECIES REFERRED TO THINNFELDIA 445 
margin this species would fall in Nagetopsis Font., which is such 
a striking type in the Potomac flora, with fourteen species, so like 
the existing Nageia section of Podocarpus, that Fontaine hesitates 
in classing them as generically distinct. It curiously illustrates the 
mixed affinities of these ancient members of the Taxaceae. 
The genus Podocarpus isabundantly preserved in European strata, 
Schimper (Pal. Végét.) enumerating nine species ; Phyllocladus on 
the other hand has not yet been found, although Heer* describes 
some curious remains from the Cretaceous of Spitzbergen under 
the name of Phyllocladites rotundifolius, 
Passaic, N. J. 
* Heer, Fl. Foss. Arct. 3: 124. p/. 75. f. 17-27. 1874. 
