. The Canadian naturalist and geologist. Natural history -- Periodicals. 344 The Laiorenciaii Formation. Silurian upwards througli all the formations, yet only two are living at the present day, of which R. psittacea is one. The race is on the decline, and will perhaps soon become extinct. It be- longs to the class Brachiopoda, so fully represented by the fossila of the lower Silurian rocks of Canada. At Beauport, where the specimen figured was procured, R. psittacea occurs plentifully at the base of the bed holding the SciMcava. Specimens may be procured there with both valves in connexion. L
. The Canadian naturalist and geologist. Natural history -- Periodicals. 344 The Laiorenciaii Formation. Silurian upwards througli all the formations, yet only two are living at the present day, of which R. psittacea is one. The race is on the decline, and will perhaps soon become extinct. It be- longs to the class Brachiopoda, so fully represented by the fossila of the lower Silurian rocks of Canada. At Beauport, where the specimen figured was procured, R. psittacea occurs plentifully at the base of the bed holding the SciMcava. Specimens may be procured there with both valves in connexion. Living in the seas of Newfoundland, Labrador, Greenland and Norway ; fossil in the drift of Ayrshire and Bramerton, Scotland, and at Beauport,. Canada. Rhynconella, from the Greek, rJiynJcos, a beak; psittacea^ from psittacus^ a parrot. The other living species is R. nigricans, found in the seas of New Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Society of Montreal. Montreal, Dawson
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