Description of erect Sigillariæ with conical Tap Roots, found in the Roof of the Sydney Main Coal, in the Island of Cape Breton

Abstract

In addition to the erect trees from the Sydney coal-measures described in the Journal of the Society, vol. i. p. 393 and vol. ii. p. 46, I have now the satisfaction of forwarding sketches and descriptions of two curious fossils from the roof of the main coal, calculated in my opinion to afford some interesting information concerning the habit and mode of growth of Sigillaria alternans ; and at the same time to clear up all doubts respecting the true nature of the “dome-shaped fossil,” figured and described in Lindley and Hutton's ‘Fossil Flora,’ vol. ii. pref. p. xiii.