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(American Journal of Botany. 2000;87:752-753.)
© 2000 Botanical Society of America, Inc.

Petrofilaments in palynological preparations

Alan Graham3,2, Gordon D. Wood4, William C. Elsik5 and Robert C. Speed6

2 Department of Biological Sciences, Kent State University, Kent, Ohio 44242 USA; 4 23222 Willow Pond Place, Houston, Texas 77494 USA; 5 The MycoStrat Connection, P. O. Box 549, Snook, Texas 77878-0549 USA; 6 Department of Geological Sciences, Northwestern University, Evanston, Illinois 60608-2150 USA

Microscopic structures (petrofilaments) may develop during palynological laboratory processing procedures that are superficially similar to secondary wall thickenings and elaters. These filaments form from angular bodies that resemble fungal spores and resin bodies. The angular bodies are a type of hydrocarbon called asphaltene and extrude the filaments when compounds in the bodies react with solvents in the mounting medium. They may be misinterpreted as fossils and so are illustrated here for the first time in the published literature.

Key Words: artifact • microfossils • palynology • petrofilaments






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