Evolution at different scales: micro to macro :
What is macroevolution?
Macroevolution generally refers to evolution above the species level. So instead
of focusing on an individual beetle species, a macroevolutionary lens might require
that we zoom out on the tree of life, to assess the diversity of the entire beetle
clade and its position on the tree.
Macroevolution refers to evolution of groups larger than an individual species.
Macroevolution encompasses the grandest trends and transformations in evolution,
such as the origin of mammals and the radiation of flowering plants. Macroevolutionary
patterns are generally what we see when we look at the large-scale history of life.
The history of life, on a grand scale.
It is not necessarily easy to "see" macroevolutionary history; there are no firsthand
accounts to be read. Instead, we reconstruct the history of life using multiple lines
of evidence, including geology, fossils, and living organisms.