New Findings Indicate that Mysterious Creature from 500 Million Years Ago Did Not Prey on Trilobites
Prehistoric underwater life forms in the ocean shortly after the Cambrian explosion Gettys The Cambrian period, which occurred from 541 to 485 million years ago, marked the evolution of the first animals with hard protective parts, such as trilobites. These marine arthropods had mineralized shells that covered their entire bodies, often adorned with spikes. However, …