Lign. 87, Corals from the Dudley Limestone.
(Sil. Syst.)
| Fig. | 1.— | Cyathophyllum turbinatum: an oblique longitudinal section, showing at a the transverse lamellæ, or cells, of the internal structure. |
| 2.— | The same species. | |
| 3.— | Cyathophyllum dianthus: a Specimen, with four young germs arising from the disc below. | |
| 4.— | The same species, with four adult cells. |
These corals are also prevalent in South Devonshire, and many of the elegant marbles of Babbicombe are figured by the sections of these polyparia.[243]
Cyathophyllum turbinatum, Pict. Atlas, pl. xxxvi.
——————- fungites, ibid. pl. xxxviii.
Associated with the Cyathophylla in the Silurian rocks, are certain corals that attain considerable magnitude, and which are principally distinguishable by their internal structure. Such are Cystiphyllum, constructed of bladder-like cells, and Strombodes, composed of spirally contorted lamellæ, or plates (Sil. Syst. pl. 16(bis), fig. 4). Other hemispherical masses, presenting on the surface concentric wrinkles, with very minute pores, are common at Dudley, and belong to the genus Stromatopora.
