The geological time scale indicates the order of eras is cenozoic as the most recent; the middle era is the mesozoic, with dinosaurs as the major group; and the earliest era is the paleozoic. consider a hillside of rock that surfaces in your backyard that is identified as dating back to the mesozoic era. what is possible?

Fossils were mainly deposited when your backyard was sediment, so many layers might be missing, but any layer from earlier Mesozoic through Paleozoic might be found.

Explanation:

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.