| Reference Type | Journal (article/letter/editorial) |
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| Title | Studies in Avonian Brachiopoda: I. The Genera Brachythyris and Martinia |
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| Journal | Geological Magazine |
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| Authors | Neville George, T. | Author |
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| Year | 1927 (March) | Volume | 64 |
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| Issue | 3 |
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| Publisher | Cambridge University Press (CUP) |
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| DOI | doi:10.1017/s0016756800103073 |
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| Generate Citation Formats |
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| Mindat Ref. ID | 245306 | Long-form Identifier | mindat:1:5:245306:8 |
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| GUID | 0 |
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| Full Reference | Neville George, T. (1927) Studies in Avonian Brachiopoda: I. The Genera Brachythyris and Martinia. Geological Magazine, 64 (3) 106-119 doi:10.1017/s0016756800103073 |
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| Plain Text | Neville George, T. (1927) Studies in Avonian Brachiopoda: I. The Genera Brachythyris and Martinia. Geological Magazine, 64 (3) 106-119 doi:10.1017/s0016756800103073 |
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| In | (1927, March) Geological Magazine Vol. 64 (3) Cambridge University Press (CUP) |
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| Abstract/Notes | In 1844 M'Coy subdivided the genus Spirifer Sowerby into five groups, two of which, Brachythyris and Martinia, were characterized by “the presence of a hinge-line shorter than the width of the shell”. Brachythyris included forms “in which … the longitudinally-ribbed surface of Spirifera is united with the short hinge line of Martinia”. The latter included “the smooth spirifers”. M'Coy's subdivisions, however, have not been much used. More recently Mr. S. S. Buckman2 has shown that the smooth forms grouped by M'Coy and others in Martinia are the catagenetic members of several spiriferid stocks. Buckman considered that Martinia and Brachythyris were distinct from the other spirifers in their shape and in their lack of dental plates. |
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