Background: The origin of angiosperms has been under debate since the time of Darwin. While there has been much speculation in past decades about pre-Cretaceous angiosperms, including Archaefructus, these reports are controversial. The earliest reliable fossil record of angiosperms remains restricted to the Cretaceous, even though recent molecular phylogenetic studies suggest an origin for angiosperms much earlier than the current fossil record.

The paper deals with the plant remains collected from the Late Triassic sediments in the eastern part of Sichuan Basin, China. These remains include Lobatannularia kaixianensis sp. nov., L. hechuanensis sp. nov., Pseudoctenis hechuanensis sp. nov., Ctenis kasixianensis sp. nov., Lobatannularia chaundianensis (Wang) comb. Nov. and Acthephyllum kaixianensis gen. et sp. nov.

The paper deals with the external form and the epidermal structures of Nilssoniopteris huolinhensis Duan et Chen. collected from the Early Cretaceous of the eastern part of Inner Mongolia. Rich Bennettitalean plants in the assemblage suggest the existence of warm and humid subtropical climate during the Early Cretaceous in the eastern pan of Inner Mongolia.