58 
ni LLETIN OI" WISCONSIN NATLUAL HISTORY SOCIETY. VOL. 2. NO. 1. 
Stone is visible in the bed of the creek, dipping to the west. 
East of this point a few feet of the lower shales are seen, but they 
are mostly barren of fossils. • This paper, however, is not in- 
tended as a study of horizons ; but a list of the fossils collected 
will be given, with some notes on their geographical distribution 
and such other observations as may be suggested by a study of the 
specimens. 
One thing especially noticeable is the striking resemblance be- 
tween the Bethany and Thedford faunas. There is also a remark- 
able similarity in the manner in which the fossils are concen- 
trated in both places in the neighborhood of the encrinal limestone, 
either in the limestone layer itself or in the strata immediately con- 
tiguous to it. The shales at Thedford are of a different character 
from those at Bethany, being lighter in color and softer, quickly 
breaking down into a tenacious clay. The limestone is similar 
in the two localities and holds the same position between- great 
thicknesses of softer rocks. 
Among the fossils first described from Thedford, but common 
to both localities, are the following — twenty-nine species in all — 
some of which have not before, so far as the writer is aware, been 
reported from New York : 
Alveolites goldfiissi, Ascodictyon fnsiforme, A. stellatiim, 
Botryllopora socialis, Camarotoechia thcdfordensis, Cladopora 
Hschcri, C. rocmcri, Cornulites intenncditts, Favositcs claiisiis, F. 
placenta, Fistulipora Juironcnsis, F. siihtrigona, Hedcrella cana- 
densis, H. filiforniis, Heliophyllnni juz'ene, Hcicrotrypa barran- 
dci, H. rnoniliforniis, Lcptotrypa quadrangularis, Leiorhynchus 
laura, Monilopora antiqua, Pinacotrypa elegans, Spirorbis arko- 
nensis, Sfreblotrypa haniiltonensis, Striatopora Unnacana, Stro- 
mafopora niamniiUata, Stroniatoporella grannlata, Syringopora 
nohilis, Tacniopora exigua and Trachypora elegant ula. 
Nicholson's Stronintoporella miUiporoides might have been in- 
cluded in the foregoing list. But this species, having been identi- 
fied with 6^. incrustans, described by Hall and Whitfield from 
Iowa, the former name, being the later of the two, gives way to 
the other. Pinacotrypa elegans (Rominger) is plainly identical 
with P. scrriilata (Hall), and P. proporoides (Nicholson) is prob- 
ably the same as P. plana (Hall) , Hall's names being superseded by 
Rominger's and Nicholson's. Nicholson's Ortonia intermedia is 
also apparently identical with Grabau's Cornulites hamiltoniae and 
must stand in the place of the latter. The proper generic name, 
however, would seem to be Cornulites. Leiorhynchus laura (Bil- 
lings) is the same as L. multicosta Hall and has priority over 
the latter. 
