Walking with Monsters

Narrator:
[as a Brontoscorpio chases the Cephalaspis] Cephalaspis suddenly changes her path. She's picking up bad vibrations–something Brontoscorpio can't detect. [a huge Eurypterid suddenly emerges from the seabed, seizing the Brontoscorpio and ripping it apart] Pterygotus is the titan of sea scorpions... the largest arthropod to have ever lived. More than three meters long, she's the size of a crocodile. She's turned the tables on Brontoscorpio. He'll make a good meal for her young.