Three truths
- Timed
- Branched off about 250 million years ago · the last 6.0% of life's story
- Named
- ≈27 named living species · 0.002% of all named
- Weighed
- Part of All other animals (total minus the parts above) (≈0.13 Gt C), not measured separately.
Eukaryotes · animals
Crocodiles and alligators
Living · roughly 27 described species
A full profile for this group has not been written yet. Its place in the tree and its dates are shown below.
Crocodiles are closer relatives of birds than of lizards.
- Branched off
- About 250 million years ago (approximate)
- Parent lineage
- Archosaurs
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
- › Amniotes
- › Reptiles and birds
- › Archosaurs
- › Crocodiles and alligators
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