He touches on other biological explosions, including the Avalon explosion, the Triassic explosion, and the origin of flowering plants.
All orders and families of the angiosperms appear abruptly in the fossil record (the same for most lower systematic categories).
Darwin’s “abominable mystery” is not only very much alive and kicking, but it also suggests intelligent design.
This year a new article by Silvestro et al. (2021), “Fossil data support a pre-Cretaceous origin of flowering plants,” was published.
Darwinists had hoped that 150 years of paleontological research since Darwin would surely make this nagging problem go away.