Revision of Botrychiopsis plantiana: a key species of the Gzhelian-Cisuralian in westernmost Gondwana.

FERNÁNDEZ, JOHANA ANTONELLA

AMEGHINIANA

ASOCIACION PALEONTOLOGICA ARGENTINA

Lugar: Buenos Aires; Año: 2021 vol. 58 p. 1 - 11

0002-7014

Botrychiopsis is an important biostratigraphic index taxon for Carboniferous?early Permian plant fossil successions of Gondwana. Its species have wide geographic distributions, restricted chronostratigraphic ranges, and are associated with diverse groups of plant associations.They have been described from sedimentary sequences of Australia, India, South Africa, Brazil, and Argentina. A whole-frond reconstruction of Botrychiopsis plantiana is presented based on a study of very well preserved specimens from the Gangamopteris flora (Ghzelian?Asselian) of the Bajo de Véliz Formation (Paganzo Basin, Argentina). The material consists of impressions of complete fronds andbasal fragments, which are rarely represented in the Gondwanan upper Paleozoic fossil record.