1. Lower and Middle Devonian spores of North and Central Vestspitsbergen;Allen;Palaeontology,1965
2. Spores and land-plant evolution;Chaloner;Rev. Palaeobot. Palynol.,1967
3. Miospore assemblages from the Devonian Sherkin Formation of South-West County Cork, Republic of Ireland;Clayton;Pollen Spores,1974
4. Revision of the miospore genera Perotrilites Erdtm. ex. Couper, 1953, and Diaphanospora Balme et Hassel 1962;Evans;Bull. Bur. Min. Resour. Geol. Geophys. Aust.,1970