Subject ASC0001hqg
The Quarterly journal of the Geological Society of London.
v.5 (1849), Page 355 (1849)
Smithsonian Libraries
BHL Page 35269005
Keywords
bark tree botanical fossil roots scars leaf Sigillaria alternans fossil quillwort bark and decorticated stem vertical section Sydney Main Coal - Island of Cape Breton Richard Brown Esq. upper surface of root areolae lower surface of root inner surface of bark minute scales Lepidodendron