Definition:
Classification of living forms according to shared characteristics.
A summary of the different kinds of proposed classification schemes is summarized in the table below.
| Linnaeus
1735[1] |
Haeckel
1866[29] |
Chatton | Copeland | Whittaker
1969[22] |
Woese et al. | Woese et al.
1990[35] |
Cavalier-Smith | Cavalier-Smith |
|---|---|---|---|---|---|---|---|---|
| 2 kingdoms | 3 kingdoms | 2 empires | 4 kingdoms | 5 kingdoms | 6 kingdoms | 3 domains | 8 kingdoms | 6 kingdoms |
| (not treated) | Protista | Prokaryota | Monera | Monera | Eubacteria | Bacteria | Eubacteria | Bacteria |
| Archaebacteria | Archaea | Archaebacteria | ||||||
| Eukaryota | Protista | Protista | Protista | Eucarya | Archezoa | Protozoa | ||
| Protozoa | ||||||||
| Chromista | Chromista | |||||||
| Vegetabilia | Plantae | Plantae | Plantae | Plantae | Plantae | Plantae | ||
| Fungi | Fungi | Fungi | Fungi | |||||
| Animalia | Animalia | Animalia | Animalia | Animalia | Animalia | Animalia |
Another way of classifying life:
