The authors close by quoting Carl Sagan’s famous adage that “extraordinary claims require extraordinary evidence.” Do they offer that kind of evidence?
I urge you to review this important series. Humbly place it at the feet of your favorite Darwinist, atheist, or theistic evolutionist.
If identified as an animal, it would “predate the Cambrian explosion of bilaterian animal phyla as a kind of ‘advance guard.’”
The claim that a spike in carbon isotope concentrations led to the explosion of biological diversity in the Cambrian doesn’t hold up, as if it would have helped, anyway.
Darwinists have to face the fact that a core prediction of their theory miserably failed an important empirical test.