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On Phenotypic Expression, Morphogenetic Pattern and Synangium Evolution in PsilotumI.—On a “Fern” Synangium, from the Lower Coal Measures of Shore, LancashireI.—On a “Fern” Synangium, from the Lower Coal Measures of Shore, LancashireIs Thuringia a gymnosperm synangium or a coprolite? Zeitschrift fur Geologische WissenschaftenThe Morphology and Relationships of Rhodea, Telangium, Telangiopsis, and HeterangiumStudies on the taxonomy of the Myxobacterales II. Polyangium and the demise of the SorangiaceaeStudies on the taxonomy of the Myxobacterales II. Polyangium and the demise of the Sorangiaceae1Paleozoic seed fern pollen organsFERAXOTHECA GEN. N., A LYGINOPTERID POLLEN ORGAN FROM THE PENNSYLVANIAN OF NORTH AMERICAThe New Zealand Species of Tmesipteris (Psilotaceae)
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