Order the following events, giving the approximate dates in millions of years ago.

Question

a) first land plant
b) flower
c) alternation of generations
d) vascular tissue
e) cuticle
f) first green plant
g) vessels
h) seeds

So I think first land plants were 470 mya, first green plants were 700 mya, vessels were 260 mya... but that's all i know. Please help!