
The sloth—slowest mammal on Earth
Secular biologists, who claim that the common ancestor of today’s two sloth
genera lived 35–40 million years ago, admit the evolutionary history of the two
living sloth groups is not well known. Interestingly, though, they believe that
despite the extensive similarities between the two genera, each is much more
closely related to some of the extinct ground-dwelling sloths than to the other
living sloth genus. They are forced to consider living sloths as stunning
examples of ‘parallel evolution’—repeat evolution of similar traits, by sheer
chance, in multiple lineages.
Podcast
17 Jun, 201911:23