Rapid Oxygen Changes Fueled an Explosion in Ancient Animal Diversity | Portside

For more than a billion years after animal life arose, it stagnated in simplicity; sponges represented the height of complexity. Then around 541 million years ago, the pace of life’s transformation abruptly accelerated. This period, known as the Cambrian explosion, roughly bracketed the appearance of nearly all major animal groups alive today.

Source: Rapid Oxygen Changes Fueled an Explosion in Ancient Animal Diversity | Portside