— oology.  ». 125 
: county, Ala., and of St. Stephens on the Tombeckbee, contains Num- 
: mulites crustaloides and Pecten Poulsoni, (Morton,) two fossils which 
abound in the Vicksburg deposits, and this limestone is therefore 
is ably of the same age as the tertiary beds of Vicksburg. This Saris 
% tion marks a distinct era in the American tertiary system, intermediate 
to the Eocene and Miocene formations, but more nearly allied to the 
former, and perhaps it will be proper to class it as a subdivision of the 
i Eocene. ‘The following table will explain these subdivisions... 
Maryland, ag 
»- Miocene, Virginia, isd [About 50 recent species. 
me ’ 103 ieee species ; no} 
iailpbacan or |Natchez gu SE ent species ; and all] 
jnewer Eocene,| Vicksburg &e. fédhiatint t from those of 
gbsoer og : the van ditinion, 
oy Gp 2 Pata ataway, a a 
: "i der Bocene “ort Washington, Maryland, |200 extinct species. 
; (Claiborne, A abama, &c. 
The following genera of shells occur at Vicksburg. 
fs Bivatves. 
F Se ‘ g, ‘ 
} qty: = Fe aayttnay 
1% Qs “| | |Nacula, i 
be 1 1 | |Ostrea, 1 
ae : Panopea, sed 
1 ecten, 1 
6 2 Pectunculus, 1 
ee ae i inna, 1 
Do. 2 |  |Sanguinolaria, 1 
1 ) 3 |Tellina, 3 
6 3 2 (Venus, 2 
ik egy ke L _— es, | 
3 ee Phol 1 
a) Teeth 2 vaad by 
we few of these fossil shells have a striking resemblance to species 
from Dax, Grignon and Bordeaux, and I believe that the Vicksburg 
id tertiary will prove to have been ieee i in an era more nearly allied 
in age to that of the localities mentioned above, than to the Eocene of 
Paris or Lond don. . 
rs TT naeueuy : 
a 1. On ‘the ‘betas Remains of Alabama; by S. B. Bucxtev. 
(Cothinvnicated. }—Sincee it has been conclusively saved that the bones 
he Zeuglodon, which Mr. Koch exhibited in New York and else- 
where, under the name of Hydrarchos, belonged to different individu- 
5, some may be disposed to doubt that the skeleton of the Zeuglodon, 
lich I Tobtained in n Alabama, now in possession of Prof. Emmons, at 
ie, , N. Y., is of one individual animal. On this point I would make 
the following statements. 
4 
eA sa 
