How does cladistics us understand phylogeny

1.       Cladistics is the study of organism classifications based on the shared characteristics of most recent common ancestors, this study assumed that the member of an organism groups shared common history and are closely related, while Phylogeny is the study of organisms’ developments and evolutions. It shows the evolution history of an organism and the traits and characteristics of each groups.
That’s why Cladistics gives information about the group of organisms’ common history that makes phylogeny determine the history of a certain organism.

Starting near the Oregon/Nevada/Idaho juncture 16 million years ago, a line of rhyolite magma centers—supervolcanoes—formed across what is now the Snake River Plain of southern Idaho. Yellowstone National Park today lies directly over the hotspot.

Those parts of the surrounding states of Montana, Idaho, and Wyoming that are closest to Yellowstone would be affected by pyroclastic flows, while other places in the United States would be impacted by falling ash (the amount of ash would decrease with distance from the eruption site).