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Stratigraphy and suggested phylogeny of Deflandrea vestita (Brideaux) comb.nov. and Deflandrea echinoidea Cookson and Eisnack
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Brideaux, W.W. (1971)
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Cookson, I.C. and Eisenack, A. (1960a)
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Cookson, I.C. and Eisenack, A. (1960a)
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Cookson, I.C. and Eisenack, A. (1960a)
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Brideaux, W.W. (1971)
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