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
No definite reason has been attributed to the demise of the mammoths, though several factors, such as climate change, the arrival of humans and even meteorological events, are being studied and linked with the extinction of the large herbivorous mammals.