Chap. XII.] 
CAKBONIFEKOUS FOSSILS. 
299 
phalopoda, such as Ceratites, Ammonites, &c, in which the air-chambers are 
minutely foliated at their edges. 
The true characters of the very numerous genera and species of fossils which 
occur in this group must be studied in other works; but in support of the 
opinion that the Corals of the lower division often lived on the spot where they 
are found, a woodcut is here given of a gigantic specimen of Lithostrotion flori- 
forme *, Sil. Syst., the lower parts of which are rooted in the shale,/, whilst the 
Fossils (78). Coral of the Mountain-Limestone. 
Lithostrotion floriforme, Fleming, in its natural position in the rock. 
upper portion is imbedded in a limestone, e, with a mass of red concretions, 
d, d. This Coral, when in its native bed, appeared, therefore, to be precisely 
in its original position, and conveyed to me the impression that it had remained 
Fossils (79). Some Fossils of the Carboniferous Limestone. 
1. Brachymetopus Ouralicus, de Vern. 2. Phillipsia pustulata, Schloth. (Ph. gem- 
mulifera, Phill.). 3. Spirifer striatus (?), Martin. 4. Productus giganteus, Sow. 5. 
Pleurorhynchus aliformis, Sow. 6. Goniatites crenistria, Phillips. 
undisturbed beneath the sea, whilst fine red sand at one time, and mud with 
calcareous matter at another, were deposited around it. The small figure to the 
* My friend Mr. Lonsdale, who, as before wards, he, Mr. Lonsdale, having first defined and 
stated, described all the Corals in the 'Silurian limited the genus Lithostrotion. See ' Eussia and 
System/ does not admit the generic word ~Lons- the Ural Mountains,' vol. i. p. 602, 1845 ; and 
dalia, as applied to this form by M. Milne-Ed- Annals of Nat. Hist., Nov. 1851. 
