11
3
July
445
457
BOULTER, M. C. 1968. A species of compressed lycopod sporophyll from the upper Coal Measures of Somerset. Palaeontology, 11, 3, 445–457.
M. C. Boulter Compression fossils of a new species of Lycopod sporophyll, Lepidostrobophyllum alatum, are interpreted in terms of their compression history. Three superficially different types of fossil are assigned to the same species as a result of this interpretation. These, it is suggested, are determined by the original orientation of the sporophylls in the sediment prior to compression; either upright, inverted, or lateral. The species has an alated pedicel, and the evolutionary significance of this is discussed. The Palaeontological Association (Free Access)