Three truths
- Timed
- Began about 2.2 billion years ago · the last 52% of life's story
- Named
- ≈1.7 million named living species · 99% of all named
- Weighed
- At least ≈464 Gt C · 84% or more of all life's carbon
- Part of Archaea (≈7 Gt C), not measured separately.
- Some members are not measured (no figure in Bar-On et al. 2018).
Archaea
Heimdall and complex-cell line
Living · roughly 1.7 million described species
The date or placement of this group is still debated.
A full profile for this group has not been written yet. Its place in the tree and its dates are shown below.
- Branched off
- About 2.7 billion years ago (approximate)
- Parent lineage
- Asgard archaea
Child lineages
Classification
Sources
- TimeTree: the timescale of life · TimeTree
- Open Tree of Life · Open Tree of Life
- Tree of Life Web Project · Tree of Life Web Project