122 
THE TERTIARY GEOLOGY OP’ THE 
or Otirtli/ti pliinicosiu, lla^'e not yet been discovered in this State. AVhile, therefore, 
from ])jdeontolo"ical evidence alone it would be impossible to indicate with precision 
the horizon which the New Jersey deposits hold relatively to the other Eocene deposits 
of the Atlantic and Gulf borders of the United States, yet from the presence of a 
numb(‘r of organic forms which would appear to be indicative rather of an older than 
of a newer period, the absence of distinctively Upper Eocene species, and the circum- 
stance? that the beds in question occupy a position directly in line with the similarly 
placed older Tertiary deposits of Maryland and Virginia, whose age has been more 
definitely fixed (Thanetian ?), it may safely be premised that the horizon is near the 
base of the entire Eocene series. 
Miocene. — Whatever may be the exact nature or age of some of the superficial 
deposits, as the “ glass sands,” occupying that portion of the State lying between the 
Eocene line and the coast, there can be little or no doubt existing as to the direct 
continuity throughout that portion of the State of the strata that have in Maryland 
and \'irginia been designated the Miocene. Beds referable to this period have been 
identified in numerous areas throughout the region, and have in various localities been 
described as lying unconformably upon the Eocene, i. e., withli less pronounced dip 
toward the .sea. The fossils hitherto discovered in the deposits of this period are 
conqinratively few in number, and have been obtained in principal part, from the 
southern sections of the State, from the marl exposures in Salem and Cumberland 
(Shiloh) Counties. 
Among the forms that have been identified with species occurring in other Miocene 
localities are : — 
■Ostrat I7r^m/ca (including 0. Mauri- 
t'ennift). 
Vetien Ilitmjihrei/sii. 
y MytUm ivjhtm. j 
? AMtarte exaUxta (A. TJiomaaii). j 
AnUirte iimhila/a (A. dia(am). j 
Other species, apparently confined to the 
Oetrea jfercmaaa. 
Plicatula rteiisata. 
Carrfitamerd acnleaia. 
Mysia pari/ is. 
Venus Ducate/lii. 
Venus p/ena. 
MercenarUi cancei/afa, Gabb. 
Tel/ina Shilohensis, 
Throcia myreformis. 
Crassatella melina. 
Carditamera arata. 
Yoldia limabda. 
Corhula elevata. 
Natica cdtenoides. 
State, are : — 
Anatina alia. 
Saxicava (?) parilis. 
Fascio/aria ( Tur/nnella ?) Mnoilii. 
F idgur scalariform is. 
Turriteda cequistriata. 
Tarritedla CumberJandiana. 
Turritella secta. 
Fissurella Gris(omi.* 
• Specimens of most of the 
Natural Sciences. 
species enumerated in the above lists 
are in the possession of the Academy of 
