After an asteroid slammed into Earth 66 million years ago, now called the Cretaceous-Paleogene (K-Pg) extinction, fish in the fossil record went dark for about 10,000,000 years.
After an asteroid slammed into Earth 66 million years ago, now called the Cretaceous-Paleogene (K-Pg) extinction, fish in the fossil record went dark for about 10,000,000 years.