1. Bellerophon is divided into two subgenera: Bellerophon (Bellerophon) and Bellerophon (Pharkidonotus)

2. The genus Chiton has been split into several subgenera as follows:

3. Subgenus Acnida differs from other subgenera since it includes only dioecious species (Mosyakin & Robertson 1996)

4. Cardiids have been the UHILLIINAEsubject of consider- able taxonomic work by both paleontologists and mala- cologists, and numerous subfamilies, genera, and subgenera have been erected

5. Pollen grains of 20 species of 5 subgenera in the genus Rhododendron L. were observed by scanning electron microscope(SEM). Most of them(16 species)were examined for the first time.

6. Most well-represented Cainozoic fern families, genera and subgenera show widespread Cainozoic ranges, typically with considerable range extensions over their living relatives, both onto other continents and north and south to higher paleolatitudes.