Three truths
- Timed
- Began about 300 million years ago · the last 7.1% of life's story
- Named
- ≈1,100 named living species · 0.06% of all named
- Weighed
- Part of Plants (mostly land plants) (≈450 Gt C), not measured separately.
Eukaryotes · plants and algae · group
Gymnosperms
Gymnospermae
Living · roughly 1,100 described species
Seed plants whose seeds are not enclosed in a fruit, including conifers, cycads, ginkgo and gnetophytes.
Key characteristics
- Seeds exposed, often on cones
- Mostly woody trees and shrubs
- Includes the tallest and some of the oldest trees alive
- Branched off
- About 330 million years ago (approximate)
- Parent lineage
- Seed plants
Child lineages
Classification
Sources
- Gymnosperm (Wikipedia) · Wikipedia
- TimeTree: the timescale of life · TimeTree
- Open Tree of Life · Open Tree of Life
- Tree of Life Web Project · Tree of Life Web Project