1. The conifers Frenelopsis and Manica in the Cretaceous of Portugal;Alvin;Palaeontology,1977
2. Reconstruction of a Lower Cretaceous conifer;Alvin;Botanical Journal of the Linnean Society,1983
3. Anatomy and paleoecology of Pseudofrenelopsis and associated conifers in the English Wealden;Alvin;Palaeontology,1981
4. A Classopollis containing male cone associated with Pseudofrenelopsis;Alvin;Palaeontology,1978
5. A new coniferous male cone from the English Wealden and a discussion of pollination in the Cheirolepidiaceae;Alvin;Palaeontology,1994