362, TT. A. Conrad on American Fossiliferous Strata. 
American seas of this age, for we know eighteen species, while 
there is but one recent on the coasts of the Middle States, and 
four on those of the Eastern. 
A singular cast in the Muschelkalk of Silesia is figured in 
ii, fig, 33. Dunker 
shorter outline than Dunker’s, and with only three tubercles. 
The latter has five or six equal tubercles, situated like the 
Raritan species on the lower submargin. I propose to name 
this Triassic genus Paleocypris; the American form P. trino- 
diferus and the European P. triassina, The former is dis- 
tinctly visible with a lens, 
n a small mass of ash colored clay taken from the lowest 
stratum, a few fern roots are well represented in pyrites, of 
an upright habit, and not creeping like the rhizomes of exist- 
‘ Imperfect specimens do not indicate the difference. ¥. 
Roemer has figured a fossil which he named Cyclopteris pel 
gure is correct, the nerves in which are not 
ranched. One : 
“mmons, Which is too imperfect in outline for comparison, but 
‘ae nerve character is similar. There are two European sp 
es described with peltate leaves, and both by the same name, 
J. peltata Géppert, of the Lias, having priority over Roemers 
-he former also differs trom the N' 
