pressions of Zamites leaves, he considers as sufficient to 1 
On the Age of the Sandstones of the Newark Group. 357 
Arr. XXVIL—On the Relations of the Fossil Fishes of the Sand- 
stone of Connecticut and other Atlantic States to the Liassic and 
Oolitic Periods; by W. C. REDFIELD. 
Read before the American Association at Albany, Aug. 28, 1856. 
reliable fossils for determining the age of the formation. The de- 
terminative value of these fossils is perhaps enhanced, also, by 
the small vertical range to which some of the species, and at least 
one of the genera, are probably limited. But these fishes, although 
numerous as well as characteristic, do not appear to have been 
referred to, in any manner, by the above named writers. 
Attention is invited, therefore, to a descriptive account of one 
genus or group of these fishes, which was read to the New York 
Lyceum of Natural History, in Dec. 1836, by Mr. John H. Red- 
field, and is found in vol. iv of the “Annals” of that Society. It 
Pro B 
of Science, vol. xliii, p. 175, (1842). Also, in Proceedings of the Boston Society 
of Natural History, vol. v, p. 14, (1854).—E. Hitchcock, Jr M.D. in Am. Jour. of 
2 5 $ . 7 * ye 
ogers first assigns to the coal rocks of Eastern Virginia a ap = near the 
i isco 
bottom of the Oolite formation of Europe; while from some fossils “ vered in 
is T division o New Red Sandstone of Virginia,” he expects be able 
confidently to ann e f be rresponding to the — 
Rarope;'—doubtlees in the extensions of the Hew Jemey. Reuine “es ‘ewark 
group. ropose the latter designation as a convenien e for thes rocks, 
those of the | seer valley, with which they are thoroughly identified by ou" 
es and other fossils, and I would include also, the contemporary sandstones 0 
irginia and N. Carolina. 
At a later period, (1854) Prof. Rogers recognizes the eral equivalency of the 
eastern and riddle belts o Virginie a and the eastern or Fos River coal belt a ae 
arolina: all of which in his view ought to be placed in the Ju series, no 
arti above its base. i the more a rope the pecans “oad 
i i i i j id coprolites im 
osidonize, and Sprit, in Pennsylvania, with sauroi Weatiy, vi one ratio, 
the disconnected tracts of this belt, in N. Carolina and Virginia and the pro'on 
area of the soinlicd a Red Sandstone of Maryland, Pennsylvania and New Jer 
Sey; and that they are of Jurassic date, but little anterior to the coal rocks 0 
Eastern Vir 
D. Roy i ndary to this grou 
rof. H. D. Rogers (1889) proposed the name of middle secondary 
(for convenience Se eae it from the Appalachian oe on a ge 
, and from the green sand deposits on the © —Third Report on : 
eris, discovered in the sandstone 
near the middle of the series in 
Kees 
Mr. Hitchcock describes a new species of Clat. 
of the Connecticut valley. This fossil fern, 
Massachusetts, he refers to the li period. 
