Journals
Paleontological Journal Pleiades Publishing (Springer)
Paleontological Research The Palaeontological Society of Japan
PalZ Springer
Papers in Palaeontology The Palaeontological Association
Philosophical Transactions of the Royal Society of London, Series B – Biological Sciences Royal Society
Phytotaxa Magnolia Press, Auckland, New Zealand
Plant Systematics and Evolution Springer Science+Business Media
PLoS ONE Public Library of Science, San Francisco, California, USA
Preslia Czech Botanical Society
Proceedings and transactions of the Royal Society of Canada Royal Society of Canada, Ottawa, Canada
Proceedings and transactions of the Royal Society of Canada, Ser. 2 Royal Society of Canada, Ottawa, Canada
Proceedings of the Linnean Society of New South Wales Linnean Society of New South Wales
Proceedings of the Royal Physical Society of Edinburgh Royal Physical Society of Edinburgh, Edinburgh
Proceedings of the Royal Society of London Royal Society (Great Britain), London
Proceedings of the Royal Society of London. Series B. Biological Sciences Royal Society, London
Proceedings Transactions Royal Society of Canada Royal Society of Canada
Professional Papers of Stratigraphy and Palaeontology Geological Publishing House, Beijing, China
Professional Papers, United States Geological Survey U.S. Geological Survey, Washington, D.C.
Publicación Electrónica de la Asociación Paleontológica Argentina Asociación Paleontológica Argentina, Buenos Aires
Publication, Geological Survey of Queensland Geological Survey of Queensland, Brisbane