Three truths
- Timed
- Began about 350 million years ago · the last 8.3% of life's story
- Named
- ≈37,000 named living species · 2.1% of all named
- Weighed
- At least ≈0.17 Gt C · 0.03% or more of all life's carbon
- Part of All other animals (total minus the parts above) (≈0.13 Gt C), not measured separately.
Eukaryotes · animals
Four-limbed vertebrates
Living · roughly 37,000 described species
A full profile for this group has not been written yet. Its place in the tree and its dates are shown below.
Fish with sturdy fins took the first steps onto land.
- Branched off
- About 420 million years ago (approximate)
- Parent lineage
- Lobe-finned vertebrates
Child lineages
Classification
- First common ancestor (LUCA)
- › Archaea
- › Asgard archaea
- › Heimdall and complex-cell line
- › Complex cells (eukaryotes)
- › Amorphea
- › Opisthokonts
- › Holozoa
- › Animals
- › Parahoxozoa
- › Bilaterians
- › Deuterostomes
- › Chordates
- › Vertebrates
- › Jawed vertebrates
- › Bony vertebrates
- › Lobe-finned vertebrates
- › Four-limbed vertebrates
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