CULPIX : MARINE AND OTHER FOSSILS. 
323 
In the table there is one marine band, with Aviculopecten 
(Pterinopecten), and it occurs not far below the Ackwwth rock. 
Posidonomya (Mem. Geol. Yorks. Coalfield, pp 468 and 753), 
w^hich is suggestive of another such band, is at a higher level, 
being immediately below the Houghton Common rock. At Brods- 
worth, where the Coal Measures w^ere entered about 270 feet 
above the Ackworth rock, and probably 200 feet at least below 
the level of the Houghton Common rock, four marine bands 
were proved, and to these may now be added a fifth one recently 
passed through at Bentley, near Doncaster. 
On the table Anthracomya PhiUipsi appears only above 
tlie level of the Houghton Common rock. At Brodsworth it 
was found in great numbers above, and immediately below, 
the Ackworth rock. It also probably occurred below the Shafton 
Coal in association wdth Anthracomya cf. minima, and again, 
probably, as low dow^n'as the Abdy or Winter Coal in association 
with Spirorhis, Xaiadites modiolaris, Carhonicola aquilina, and 
Carhonicola prob. turgida. 
Summarily groupmg other particulars contained in the 
table, Carhonicola appears immediately below^ the Houghton 
Common rock, and above and below the Wath Wood seam. 
Carhonicola rohusta, C. aquilina, C. turgida, Anthracomya Wardi. 
Naiadites modiolaris, N. triangularis, and N . carinata are shown 
at the level of the Stanley Scale Coal ; and Carhonicola acuta 
and C. aquilina at the level of the Stanley Main Coal. Fish, 
mentioned in the Survey Memoir (pp. 468 and 753) in only one 
position above the Barnsley seam, and then merely as fish, 
appear below^ the Houghton Common rock. Coprohtes, which 
also probably indicate fish, are referred to (p. 791) as having 
been seen in the Stanley Shale. Mr. Edgar D. W^ellburn has 
recorded six species of fish from the level of the Yard Coal, three 
from the Stanley Scale, four from the Kent's Thick, eight from 
the Cannel above the Thick Barnsley bed, and 29 from the 
Barnsley seam. Plants are quoted in the Memoir, now and 
again with the names, but usually only as Stigmaria or Sigillaria, 
first at Conisborough Pottery, and then, in descending order, at 
various levels, including the W^oolley Edge rock. As found 
