72 
There is a rather stoat petiole and stout midvein giving off numerous 
ascending nearly straight parallel secondaries at acute angles. These 
are craspedodrome and give off distad one or more craspedodrome branches. 
The basal secondaries are subopposite and give off at acute angles 4 or 5 
subparallel, straight, craspedodrome laterals. 
Poorly preserved specimens of this species are common in the Allison 
formation. They show the general features of the genus Viburnum, a 
genus not uncommon in the later Upper Cretaceous and Tertiary, but are 
not precisely like any described forms and probably represent a new species, 
which must await the collection of more complete material for accurate 
identification and description. Among previously described fossil forms 
it is not unlike what Knowlton has called Phyllites walseriburgensis from 
the Vermejo formation of southeastern Colorado. 1 
Undeterminable Plant 
A single specimen from locality 7750 shows a cast of a straight, stout 
axis about 6 cms. long and about 7 mms. in diameter. This gives off two 
pairs of opposite branches at intervals of about 1 * 5 cms. The branches 
are round, about 5 mms. in diameter, and curve upward. 
The specimen is a cast without any trace of carbonaceous residue, and 
is of a type that the older students of fossil plants frequently described and 
referred to some nominal genus of fucoids. The nature of the material is 
entirely problematical. 
1 Knowlton j F. H.: U.S. Geol. Surv., Prof. Paper 101, p. 282, PI. 51 (1918). 
