Ctenacanthus
Home › Paleontology › Ctenacanthus By Jason R. Abdale on October 27, 2026 • ( 0 ) Ctenacanthus, meaning “comb spine”, was a prehistoric proto-shark which lived from the late Devonian Period to the early Permian Period 370-270 million years ago. Skeleton of Dracopristis hoffmanorum, a relative of Ctenacanthus…