I know there are many series like this, including ones with very similar names like Life on Earth but I think this may be my favorite of them all. I won't write individual reviews for each episode, which seems absurd, so this is for the series overall.
One unique thing about this series, which I liked, is the way they intersperse footage of modern-seeming species like cockroaches and sea turtles with ancient species, because the cockroaches and sea turtles shared the planet with pterosaurs and six-foot-long millipedes. That lends reality to the proceedings.
The series also details the cause and impact of several mass extinctions, not just the familiar one that knocked out the dinosaurs, with the exception of a few avian dinosaurs that went on to develop into birds.
Which makes me wonder, what if they'd died too? Would all the roles of birds, from condors to eagles to parrots to hummingbirds, be filled by a plethora of flying mammals that branched off from bats?
The overall message is that, it may be sad that we don't have trilobites or triceratops around now, but they left space for the species we do have, that otherwise would not have developed (like us).