Changes in terrestrial vegetation during the mid-Cretaceous and their link to climate and
environmental change are poorly understood. In this study, we use plant macrofossils and …

Bennettitales is an extinct group of seed plants with reproductive structures that are similar in
some respects to both Gnetales and angiosperms, but systematic relationships among the …

Quantitative palynology of the marginal marine and deltaic-fluvial Isachsen Formation of the
Sverdrup Basin, Canadian Arctic, provides insight into high latitude climate during much of …

Background Amber has been reported from the Early Cretaceous Crato Formation, as
isolated clasts or within plant tissues. Undescribed cones of uncertain gymnosperm affinity …

A considerable disparity of pollen characters in the modern Gnetales (including the
inaperturate and monosulcate germination types, the psilate, polyplicate and spinulose …

This paper describes the ginkgoaleans (Ginkgoites) and conifers (Palissya, Stachyotaxus,
Schizolepis) of the Rhaetian flora from Wüstenwelsberg, as well as a new species of the …

New experimental modeling of exine has been undertaken to verify general ideas on the
participation of self-assembly processes in sporoderm development. Our aim was to confirm …

The pollen morphology and ultrastructure of Cycas micholitzii, C. simplicipinna, Cycandra
profusa, Ceratozamia mexicana, and Ginkgo biloba are studied. Pollen germination is also …

A provisionary system of gnetophytes is proposed, including recently discovered Mesozoic
members. The following principal characters are used, in descending order of significance …

A new lignitised, slightly compressed pollen organ, Erdtmanitheca portucalensis, with
affinities to extinct Erdtmanithecales from the Early Cretaceous (Aptian–Albian) of Vale de …