Three truths
- Timed
- Branched off about 2.6 billion years ago · the last 62% of life's story
- Named
- ≈4,000 named living species · 0.2% of all named
- Weighed
- Part of Bacteria (≈70 Gt C), not measured separately.
Bacteria · class
Gammaproteobacteria
Living · roughly 4,000 described species
A large class of bacteria that includes Escherichia coli, one of the most studied organisms in biology, as well as many disease-causing species.
Home of E. coli, one of the most studied living things.
Key characteristics
- Includes E. coli and Salmonella
- Many live in animal guts
- Widely used in research and biotechnology
- Branched off
- About 2.6 billion years ago (approximate)
- Parent lineage
- Pseudomonadota (Proteobacteria)
Classification
Sources
- Gammaproteobacteria (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