Mr. Parkinson’s Remarks on Fossils , Zsfc. 53 
Fossils of the Chalk with numerous Flints. 
Plagiostoma spinosa. 
Inoceramus Cuvieri . . in fragments. 
Terebratula carnea . . . Mineral Conchology, Tab. xv. fig. 5 & 6. 
semiglobosa Tab. xv. fig. 9. 
subundata Tab. xv. fig. 7. 
Echini Many of the common species of galeae, spatangi, and 
cidares, with some of the cucumerine, clavated, and 
slender muricated spines. 
Sponges Various species, in a silicified state, sessile, ramose, or 
umbellate, and some attached to a pedicle. Traces 
of sponge were also perceptible in the chalk. 
In this bed were also found various silicified fossils, allied to sponge, but 
apparently of a more complex structure. That peculiar asperity of surface, 
by which the presence of silicified sponges and alcyonia may be detected, 
was observable in many of the flints of this bed. On the surface of some of 
these flints, collected by Mr. Phillips^ ossiculae of asteriae, and of minute encri** 
nites, were observed.. 
Fossils of the bed of Organic remains with interspersed Flints .. 
Inocerami ........ Fragments of different species. 
Nautilus ........ Specific character not distinguishable.- 
Plagiostoma spinosa. 
Terebratula lacunosa. 
...... lyra .... Mineral Conchology. Tab. cxxxviii. fig. 2 , 
....... . umbonata New species. Length one inch; width somewhat less.. 
The larger valve produced one third of its length,, 
the produced part being sulcated, and marked with 
five alternate small ridges and depressions. The 
other part of the margin only slightly crenulated, 
and the rest of the shell plain, except on the upper 
part of each valve, where there is a circular uiiibo.- 
. As in the chalk with numerous flints. 
Echini . 
