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Published in Torreya, in 1925, in volume 25, issue 1, pages 15-16
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Published in Palaeontology, in 1959, in volume 1, issue 4, pages 292-297
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Published in Palaeontology, in 1961, in volume 4, issue 1, pages 71-81
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Published in Journal of Raptor Research, in 1995, in volume 29, issue 2, pages 110-116
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Published in Palaeontology, in 1986, in volume 29, issue 4, pages 743-786
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Published in Palaeontology, in 1959, in volume 2, issue 1, pages 143-149
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Published in Palaeontology, in 1988, in volume 31, issue 3, pages 621-649
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Early Ordovician trilobites from Dali, west Yunnan, China, and their palaeogeographical significance
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Published in The Great Basin Naturalist, in 1986, in volume 46, issue 1, pages 117-122
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Published in Palaeontology, in 1998, in volume 41, issue 4, pages 693-735
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Published in Nemouria, in 1970, in volume 1, pages 1-14
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Published in The Wilson Bulletin, in 1951, in volume 63, issue 1, pages 59-60
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Published in The Wilson Bulletin, in 1999, in volume 111, issue 1, pages 61-69
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Published in The Auk, in 1898, in volume 15, pages 284-285
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Published in Botanical Gazette, in 1915, in volume 60, issue 1, pages 55-65
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Published in The Wilson Bulletin, in 1943, in volume 55, issue 3, pages 164-177
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Published in Palaeontology, in 1982, in volume 25, issue 4, pages 897-903
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Published in Biol Bull, in 1963, in volume 124, pages 163-169
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Published in Palaeontology, in 1965, in volume 8, issue 1, pages 82-106
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Published in Western Australian Naturalist, in 1964, in volume 9, issue 4, pages 90-91
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Published in The Wilson Bulletin, in 1949, in volume 61, issue 1, pages 52-54
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Published in The Wilson Bulletin, in 1949, in volume 61, issue 2, pages 117-119
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Published in Bulletin of The British Ornithologists' Club, in 2003, in volume 123, issue 4, pages 239-250
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Published in Biol Bull, in 1965, in volume 128, pages 67-76
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Published in Journal of The Washington Academy of Sciences, in 1925, in volume 15, pages 136-137
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Published in American Fern Journal, in 1995, in volume 85, pages 89-94
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Published in American Fern Journal, in 2006, in volume 96, pages 54-61
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Published in Palaeontology, in 1998, in volume 41, issue 6, pages 1183-1194
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