End-Permian mutagenesis

End-Permian Isoetalean spore tetrads
Plant diversity through geologic time
End-Permian fungal remains
End-Permian mutagenesis
Ecological success Early Triassic isoetaleans

Fig. 1. Occurrences of lycopsid microspore tetrads in P-Tr transition sequences (paleogeography after Scotese's Paleomap Project).