Subject ASC000105a
The Quarterly journal of the Geological Society of London.
v.59 (1903), Page 227 (1903)
Smithsonian Libraries
BHL Page 41497188
Keywords
fronds fossil Jurassic Indian European Williamsonia pecten Morris frond pinnate type-specimen Ptilophyllum cutchense Cycad fossils indian plant spines plant fossil Geology microscopic view pinnae Morris's type specimen