26o The American Geologist. October, 1904. 
The two species Rlicunnus and the four species of Ster- 
ctilia all point to the relation of the Cliftwood flora to those of 
higher horizons. 
In the genus Nchnnho we have a small leaved species at 
Cliffwood which Hollick considers as probably identical with 
his Nehimho larainicnsis from the Laramie formation. 
Further than this, if we were to eliminate from our discus- 
sion Raritan forms of rare occurrence in the !M'atawan, and 
evidently waning- type, such as Tricalycites. papyraceous and 
ProtophyUocIodus siihintcgrifoJius, each represented by but a 
single specimen, the differences between the two floras would 
be greatly emphasized. » 
The Cliflfwood clays also contain many representatives of 
distinctly later types — thus Viburnuin has two positively iden- 
tified species, the genus being unrepresented in earlier strata.* 
Similar evidence is furnished by representatives of the genera 
Arisacuia, Ficus, Baiiksia, Laiinis, Magnolia, Myrsine, Sapin- 
dus, etc. 
The botanical evidence is capable of much fuller amplifi- 
cation than I have thought necessary to give it in the foregoing 
notes, and I have no hesitation in saying that the Cliffwood 
flora is not only perfectly distinct from the Raritan flora, but 
that the old types in the latter are' replaced by more modern, 
types in the former, and clearly point to the greater age of 
the Raritan flora. If subsequent facts should prove the in- 
timate stratigraphic connection of these beds with the 
Raritan the flora would nevertheless prove that this horizon 
(at Cliflfwood) is a biological, if not a stratigraphic unit. 
* A species from the Raritan referred to the genus by Kewbcrry is obviously 
not a Viburnum. 
