BERRY : SPECIES REFERRED TO THINNFELDIA 441 
are very variable, ranging from nearly simple to almost pinnately 
parted, some with but the slightest indication of the pronounced 
crenations of others. 
Subsequently discovered remains from Kansas are considerably 
larger than Lesquereux’s type specimen, as are also a number of 
the Greenland specimens. Some of the Raritan forms have a 
somewhat different aspect, being long and narrow; sometimes the 
margins are entire, oftener they are undulate or toothed. New- 
berry, who examined some hundreds of leaves, so abundant are 
they in the Raritan clays, says ‘‘the aspect which they present is 
not quite that of any known ferns” and he places them among 
“‘Coniferae of Uncertain Affinities.” Were the linear form and 
toothed margins constant features these leaves might be con- 
sidered specifically distinct, but the specimens show every gradation 
to forms undistinguishable from those of this species from other 
localities. P?. zz, f. 76, Fl. Amboy Clays is very similar in all 
respects to Podocarpus Nageia R. Br. from the existing flora of 
Japan, but there is no resemblance to any other species of Podo- 
carpus that I have seen. 
An additional locality that may be noted for this species is in 
the Matawan formation near Cliffwood, N. J. 
All these leaves have the aspect of Phyllocladus, easily seen 
but scarcely definable, and except for their large size are strictly 
comparable, the leaves of P/yllocladus showing the same varia- 
bility of outline as do the fossil leaves. 
Protophyllocladus lanceolatus (Knowlton) 
Thinufeldia lanceolata Knowlton, Bull. U. S. Geol. Surv. 105: 
49. pl. 5. f. 5. 1893. 
This species, which occurs in Montana in beds of Laramie age, 
is related to the preceding, but is larger, with pointed apex, and 
according to Knowlton, with entire margin, although his very 
perfect figure shows slight and wide crenations. He considers it 
to be closely allied to the existing genus Poedocarpus, pointing 
out its resemblance to Podocarpus macrophylla Don, a southeastern 
Asiatic species, Podocarpus Rumphii Bl. and Podocarpus leptostachya 
_ BL, East Indian and Malayan species, and Podocarpus salicifola 
Kl. & Karst., a tropical American species. Specimens of the ~ 
