CULPIN : MARINE AND OTHER FOSSILS. 
325 
Of the four marine bands seen at Brodsworth, the to]i- 
most was in 32 feet of " blue bind," the base of which was 106 J 
feet below the Ackworth rock. The fossils, so far as could be 
ascertained, came from the higher part of the " bind." They 
included Lingula mytiloides, Pterinopecten papyraceus, Posidoniella 
loevis, Nuculana acuta, and Goniatites. There were also abundant 
fish fragments, including Megalichthys. This band is most 
likely the same as that mentioned in the Survey Memoir (p. 471), 
as having been noted in a cutting east of Swan Hill on the Swinton 
and Knottingley line, below the Brierley or Ackworth rock, 
showing, as is there said, "that incursions of the sea continued 
to occur even up to these comparatively late portions of the 
Coal Measure period." At Brodsworth in this bed there were 
also occasional traces of plants (Calamites sp. and Neuropteris 
heterophylla), which presented an attractively delicate appearance 
when the shales containing them were first opened, but quickly 
deteriorated on exposure. 
The next marine band proved to be the most important 
one of the series, and from its distinctive lithological and palae- 
ontological characters it should be a useful datum line for future 
borings and sinkings. It was about 15 feet thick, the base of 
it being 219 feet above the Melton Field Coal and 705 feet above 
the Barnsley Coal. At the top it consisted of blue shales with 
fucoid markings and with a soapy feel. Similar shales then 
followed which were crowded with Lingula mytiloides. Beneath 
these were greyish-blue hard shales, which in turn rested on 
an extremely hard, greyish-blue limestone " cank." The 
lower shales were very fossiliferous, and the limestone moderately 
so. The list includes three brachiopods (Chonetes Laguessiana 
mut. d, Lingula mytiloides, and Orbiculoidea nitida) ; ten lamelli- 
branchs {Aviculopecten sp. no v., described on p. 335 by Dr. Wheel- 
ton Hind as A. Culpini, Ctenodonta Icevirostrum, Myalina com- 
pressa, Nucula cequalis, Nuculana acuta, Pterinopecten papyraceus, 
Posidoniella sulcata, Pseudamusium fibrillosum, Scaldia sp. nov., 
described on p. 335-6 by Dr. Wheelton Hind as 8. carbonaria, 
and Syncyclonema carboniferum) ; one gasteropod {Euphemus 
sp.) ; six cephalopods {Dimorphoceras Gilbertsoni, Glyphioceras 
micronotum, G.reticulatum (?), Orthoceras asciculare, 0. Steinhaureri, 
