Abstract
The late Dr R. Kidston proposed the name Lyginorachis to include isolated petrified petioles which exhibited a structure so similar to the petioles of the well-known Lyginopteris (Lyginodendron) oldhamia (Binney) as strongly to suggest affinities with that plant.Two species of Lyginorachis are known, both from the Lower Carboniferous rocks of Britain. In 1923 Dr D. H. Scott gave an account of L. papilio from the Cementstone Group (Calciferous Sandstone Series) of Norham Bridge, Tweedside, and briefly referred to a second species, L. taitiana, from the Carboniferous Limestone Series. Kidston had passed on these sections to Dr Scott for description.
Published Version
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