I.—On the Occurrence of the Genus Ramipora (Toula) in the Caradoc Beds of the Neighbourhood of Corwen

• Published in: Geological Magazine
• Main Author: Etheridge, R.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 1879
• Subjects: Geology; Arctic
• Online Access: http://dx.doi.org/10.1017/s0016756800157267; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756800157267

To the recently published paper by my father, “Palæontology of the Coasts of the Arctic Lands visited by the late British Expedition,” etc., I contributed some notes on the Polyzoa obtained during the progress of the Expedition from the Palæozoic rocks of the regions visited. Amongst other forms I referred at some length to Dr. F. Toula's genus Ramipora , and pointed out its affinities to various genera of Palæ Polyzoa, and more particularly to Synocladia , King, in the following words:—“ It appears to differ from the first of these” (i.e. from Synocladia ) “in the absence of dichotomization of the stem and primary branches, so far as the remains of it are known to us; secondly, in the bilateral symmetry of the latter; thirdly, in the fact that the cells all open on the same plane on each side the median keel, whereas in Synocladia the stems and branches are divided longitudinally by several carinæ, between which the cell apertures occur. Again in Ramipora both aspects of the polyzoarium are carinate, but in Synocladia only one. Lastly, in Synocladia the dissepiments all appear to be regularly celluliferous, but in Ramipora this does not appear to hold good to the same extent.”