Ancient crocodiles are the subject of this episode from Paleoworld, the paleontology series that ran on The Learning Channel from 1994 to 1997 across fifty episodes. Each installment runs about twenty-four minutes and pairs fossil evidence with reconstructions of extinct animals, and this one turns that format toward the crocodile lineage, tracing how the group's ancestors differed from the reptiles alive in rivers and estuaries today. The episode comes from the show's second or third season, aired in 1995 or 1996, when Paleoworld was covering ground few television series had attempted at that scale. Without a narrator on screen, the show relies on paleontologists' fieldwork and specimen analysis to carry the science, a format that held up across the full run. Details on which specific crocodile species or fossil sites this episode covers are not available beyond the broad subject line.