On account of their higher organization, they are easily distinguished from both Monocotyledons and Gymnosperms; and they present features which clearly differentiate them amongst themselves.
"The Old Riddle and the Newest Answer"
John Gerard
Gymnosperms, appearance of, 219 Haeckel, Prof.
"The Old Riddle and the Newest Answer"
John Gerard
But we now learn that there is no incompatibility in the co-existence of a vegetation like that of the present globe, and some of the most remarkable forms of the extinct reptiles of the age of Gymnosperms.
"The Student's Elements of Geology"
Sir Charles Lyell