A new hypothesis about the origin of isoetalean lycopsids was proposed based on
palynological data. The occurrence of three apical papillae on the proximal surfaces of …

Documenting the morphology and ultrastructure of spores from known Silurian‐Devonian
plants clarifies organization and probable affinities of dispersed spores and contributes to …

In situ microspores and megaspores from two reference cones of Pleuromeia sternbergii
have been investigated. Their morphological and ultrastructural features are compared with …

Thousands of dispersed megaspores of the Valvisisporites auritus-type, some isolated
megasporangia still containing them and dispersed microspores of the Endosporites …

Lepidostrobus xinjiangensis sp. nov. is described from Upper Devonian rocks of the eastern
Junggar Basin, Xinjiang, north-west China. It provides new insights into the reproductive …

Heterosporous lycopsids with monosporangiate strobili are highly diverse in the
Carboniferous, but their early evolution is poorly understood. The Late Devonian …

A new heterosporous and ligulate lycopsid, Yuguangia ordinata gen. et sp. nov., is
described from the Haikou Formation (late Givetian) of Yunnan Province, southwestern …

The evolution of the isoetalean lycopsids spans much of the history of vascular plants, from
Late,(or possibly Middle), Devonian to the current day genus Isoetes. The best known fossil …

Changxingia longifolia gen. et sp. nov. is described from the Upper Devonian Wutong
Formation, Changxing County, northern Zhejiang Province, China. It possesses …

Microspores extracted from isolated sporophylls assigned to Lepacyclotes (syn. Annalepis)
zeilleri from the Ladinian (Middle Triassic) of northeastern France are described and studied …