66
2 Systematic Descriptions
1–3 Show the typical circum-circular fold, evident in
microtome cross-section (see reconstructed specimen)
‘complete’ pollen, clear tetrad mark, nexine fold prominent
Occurrence: Lower Permian of Collie–Muja and Wilga Basins. In the Sakmarian
of Sue No. 1 bore in Perth Basin it reaches 20%, and drops to 6% in the Lower