P Kenrick and M Fairon-Demaret (1991)
Archaeopteris roemeriana (Goeppert) sensu Stockmans,1948 from the Upper Famennian of Belgium: anatomy and leaf polymorphism
Bulletin de l'Institut royal des Sciences naturelles de Belgique,Sciences de la Terre, vol. 61 p. 179-195.
18127, 167, N, SYNDIN, FA, PALBOT
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