R Dreesen (1976)
Interspecific morphological relations within the "Quadrantinodosa-stock" (Branson & Mehl,1934) - (Marginifera-zone,Upper Devonian)
Annales de la Société géologique de Belgique, vol. 99 p. 511-529.
15998, 158, 177, 173, 135, 147, 148, Lg, N, Ht, SYNDIN, SYNVE, FENTHEU, FA, PALMIC
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