Aspects of Permian palaeobotany and palynology. VIII. On the reclassification of the West- and central European species of the form-genus Callipteris brongniart 1849

A New Nonmammalian Eucynodont (Synapsida: Therapsida) from the Triassic of Northern Gansu Province, China, and its Biostratigraphic and Biogeographic Implications

“…However, increasing recent evidence has shown that traditional usage of the form genus Callipteris as an index fossil for the Permian is highly problematic. This situation is worsened with the discovery of the generic name Callipteris Brongniart, 1849, as a later homonym of Callipteris Bory 1804 (a genus of extant ferns; see Kerp and Haubold, 1988, for taxonomic history and comments). As a consequence of a major taxonomic revision, Callipteris zeilleri and Callipteris ivanoevia have been placed in a long list of species dubiae in Kerp and Haubold (1988).…”

Callipterid peltasperms of the Dunkard Group, Central Appalachian Basin

“…This genus was split into five genera when the generic name appeared to be illegitimate (Kerp and Haubold, 1988). Reproductive organs revealed that one of the resulting genera, Autunia, is a peltasperm (Kerp, 1988).…”

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

“…r. sChenkii (4.9%). Rhachiphyllum is a callipterid, a group of peltaspermous seed plants segregated from the genus Callipteris (Kerp and Haubold, 1988). Specimens assigned to this species are superficially quite like some of those attributed to Odontopteris (Mixoneura) schlotheimii in having sparse secondary venation and a somewhat odontopteroid aspect due to the entry of secondary veins into the lamina directly from the supporting rachis (Figure 8f).…”

“…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). …”