Three truths
- Timed
- Branched off about 500 million years ago · the last 12% of life's story
- Named
- ≈800 named living species · 0.05% of all named
- Weighed
- Part of All other animals (total minus the parts above) (≈0.13 Gt C), not measured separately.
Eukaryotes · animals
Octopuses and squid
Living · roughly 800 described species
A full profile for this group has not been written yet. Its place in the tree and its dates are shown below.
Octopuses and squid, with three hearts and blue blood.
- Branched off
- About 500 million years ago (approximate)
- Parent lineage
- Cephalopods
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