III.—A Revision of some Carboniferous Corals
| Autor: | R. G. Carruthers |
|---|---|
| Rok vydání: | 1908 |
| Předmět: | |
| Zdroj: | Geological Magazine. 5:63-74 |
| ISSN: | 1469-5081 0016-7568 |
| DOI: | 10.1017/s0016756800112889 |
| Popis: | Corallum conical and, as a rule, gently curved, though often straight; a short broad outline is not uncommon. The epitheca has well-marked longitudinal ribbing, sometimes obscured by fine annular striations in the neighbourhood of the calyx; slight constrictions of growth may occur, but there is never an interrution in the continuity of the epitheca. Good figures are given both by Milne-Edwards & Haime and by de Koninck. |
| Databáze: | OpenAIRE |
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