We humans have long viewed ourselves as the pinnacle of evolution. People label other species as “primitive” or “ancient” and use terms like “higher” and “lower” animals. This anthropocentric ...
The morphology of gymnosperms the structure and evolution of primitive seed-plants [by] K. R. Sporne
Palaeozoic pteridospermales -- Glossopteridaceae and mesozoic pteridospermales -- Bennettitales (= Cycadeoideales) -- Pentoxylales -- Cycadales -- Cordaitles ...
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