| Term | Definition |
| Intial Decay | 0-3 days. Flesh flies and blowflies land on body. Eggs are laid. |
| Putrefaction | 4-10 days. Bodies bloated. Gasses are given off by digestive bacteria. Cadaverine, putricine, and methane attract more insects. |
| Black Putrefaction | 10-20 days. Bodies collapse and quiver with maggot mass. Flesh is being consumed by second generation flesh flies. Skin turns black. Body fluids leak out. |
| Butyric Fermentation | 20-50 days. Bodies reduced to bones and ligaments. Beetles appear. Distinctive "toe cheese" odor given off. |
| Dry Decay | 50-365 days. Bones and hair remain. Hair is consumed by mites. |