SHUMARD—GEOLOGY OF N. MEXICO. 289 
hands of a Paleontologist for examination and description. 
We will, therefore, at present, merely enumerate some of the 
Df which havé been found most characteristic of the 
ee been found to range from the 
to the base of the Se pe bi intra ea Pitcheri 
), Exogyra arietina (Rem.), J erana Micro 
p) J Janira quatricotata | (Sowerby), and 
er 
be oe the upper of the drpinny. 2 we find most cde? 
the following, = ok as far as our observations extend, they are 
to it: Ceratites Maanonctes is (Roem. sp.), 
fecal tot: a (Shum.), pF seston gawk 3 - 
. (Gu vertebroides ? oe sp.), Watica 
ha) tumida iy )s my oe ata (Sham), Mo- 
erana (Rem.), > (Roem Ostrea 
Gp ima Winctas - ae 
2° an hve O Gita.) 
the most i are 
if acta g a 
rtinus ort. uf. 
vespe hg % epeat ee | 
leviuscula (Rem.), 
ecten 
