Book excerpt: Tony the trilobite and his friends, Becky the brachiopod and Bryan the bryozoan, live in an ancient ocean that covers what will one day be the Chickasaw Nation. When a hungry cephalopod named Seth shows up, Tony and his friends find themselves in trilobite trouble! This fun and educational introduction to the Paleozoic era and fossils includes a glossary of scientific terms, Chickasaw language vocabulary words, and a downloadable version of the "Trilobite Song," written and performed by the author.