Question

oldest gymnosperm in world

Answer 1

In early classification schemes, the gymnosperms (Gymnospermae) were regarded as a "natural" group. There is conflicting evidence on the question of whether the living gymnosperms form a clade.

Answer 2

1-Encephalartos sclavoi cone, 30 cm log
2-Zamia integrifolia, a cycad native to Florida.
Examples of gymnosperm lifecycle.