Aspects of Permian palaeobotany and palynology. XI. On the recognition of true peltasperms in the Upper Permian of Western and Central Europe and a reclassification of species formerly included in Peltaspermum Harris

Vegetation history across the Permian–Triassic boundary in Pakistan (Amb section, Salt Range)

“…Townrow, 1960;Meyen and Migdissova, 1969;Bose and Srivastava, 1972;Anderson and Anderson, 1989;Poort and Kerp, 1990;Retallack, 2002;Zhang et al, 2012). With the subsidiary cells being similarly or even less cutinised than the surrounding regular epidermal cells, the present material is similar to Lepidopteris species reported from the Lower Triassic of India (e.g.…”

Callipterid peltasperms of the Dunkard Group, Central Appalachian Basin

“…Reproductive organs revealed that one of the resulting genera, Autunia, is a peltasperm (Kerp, 1988). Other callipterids also appear to be peltasperms (e.g., Naugolnykh and Kerp, 1996;Poort and Kerp, 1990) and it can be assumed that this is true for most if not all callipterids. Peltasperms are related to, and possibly descended from, the callistophytalean pteridosperms (Crane, 1985;Hilton and Bateman, 2006).…”

Plant Fossils from the Pennsylvanian–Permian Transition in Western Pangea, Abo Pass, New Mexico

“…The tearing of the lamina in some of the specimens (as seen in the left-hand specimen in Figure 8f) also indicates a thin pinnule lamina. In keeping with this assignment, a small, fragmentary specimen with similarities to Peltaspermum sp., the reproductive organ of various types of callipterids, a subgroup of the peltasperms (Kerp and Haubold, 1988;Poort and Kerp, 1990), was identified in the collection (Figure 8g). …”