Suppose a scientist found a new fossil that indicated it was a primitive mammal. Relative dating techniques place the age of this fossil at a much earlier time than mammals were thought to exist. What effect will this finding have on understanding of the history of life?
a. The split between mammals and nonmammals in the tree of life needs to be shifted
b. A new branch needs to be added to the tree of life
c. An existing branch on the tree of life needs to be removed
d. Other fossils need to be sure that the ages assigned to them are not in error
5 answers
A or B.
I think a
does anybody have the answers to the whole thing?
answers anybody?
@justtryingtopass
nope.
nope.
1 answer