Callospermarion ovules from the Early Permian of northern China: palaeofloristic and palaeogeographic significance of callistophytalean seed-ferns in the Cathaysian flora

The Institute of Evolutionary Science of Montpellier (ISEM – University of Montpellier, CNRS, IRD, EPHE, CIRAD, INRAP) has been focusing research on biodiversity origins and dynamics and the associated evolutionary mechanisms.