500 million-year-old fossils show how extinct organisms attacked their prey

Most fossils preserve the physical remains of organisms and their structure; however, geologists and paleobiologists recently found fossils that show the behaviors of predators preserved as traces in ancient sediments. Thus, fossils from southeast Missouri are helping scientists unlock clues about the behaviors of these predators and their interactions with their prey. Evidence shows that these ancient organisms were behaviorally sophisticated, tailoring their attacks for effectiveness.
Paleontology News — ScienceDaily