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The Carboniferous System in Scotland Characterized by its Brachiopoda
Published online by Cambridge University Press: 17 March 2016
Extract
This family, which has been termed Orthidœ by some authors, comprises several genera and subgenera, of which Strophomena, Streptorhynchus, and Orthis alone have been found represented in Scottish Carboniferous strata.
The genus Orthis forms a well characterized group, especially specifically numerous and abundant in the Silurian and Devonian systems, is considerably reduced during the Carboniferous period to appear no longer (P) in subsequent stages. Two species alone have been hitherto discovered in the Carboniferous rocks of Scotland.
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References
page 101 note * Anomiœ striatœ of Ure, “History of Rutherglen and East Kilbride:” 1793. Pl. xiv., flgs. 13 and 14.
page 106 note ‡ These figures are by Mr. S. P. Woodward; more detailed representations will be formd in our plate.
page 106 note * For synonyms and more ample details on all that pertains to the species of Productus consult Prof. de Koninck;s excellent “ Monographic des Genres Productus et Chonetes.” Liège, 1817.
page 106 note † Mentioned by Ure in his “ History of Rutherglen and East Kilbride:” 1793. Page 316, in his Anomisæ Echinatæ.
page 108 note * There are other synonyms, but which cannot be here recorded. In my Monograph of British Carboniferons Brachiopoda full details will be found.
page 114 note * In 1793, David Ure gave us a very good description of this shell; he states that both valves are covered with small spines resembling hair, and so numarous that a largish example contains upwards of ten thousand; and that they lie so closely together that the surface of the shell is entirely concealed from view.