Micrococcus luteus is a Gram-positive, to Gram-variable, nonmotile, Coccus, saprotrophic bacterium that belongs to the family Micrococcaceae. It is urease and catalase positive.
Why is a mammoth more likely to fossilize than a caterpillar? A mammoth is more likely to fossilize than a caterpillar because a caterpillar has no hard tissue. Bones and cartilage are much more likely to fossilize. Edit
Some experts hold that mammoths were hunted to extinction beginning some 10,000 years ago by the species that was to become the planet's dominant predator -- humans. Others argue that climate change was more to blame, leaving a species adapted for frigid climes ill-equipped to cope with a warming world.