Gyrodus was a deep-bodied pycnodont fish that lived during the Jurassic period, around 150 million years ago. Its remains have been found across Europe, including famous fossil beds in Germany and England, where it swam in warm, shallow seas. Gyrodus is instantly recognizable by its tall, disk-shaped body and large, fan-like fins, which made it an agile swimmer among the reefs and coral gardens. Its mouth was lined with flat, crushing teeth perfectly suited for cracking open the shells of clams, snails, and sea urchins. Though small, Gyrodus was a successful survivor: pycnodont fishes like it thrived for over 150 million years, outlasting many of the giants of their time. Fossils of Gyrodus are prized for their detail, sometimes preserving the delicate scales and fin rays that reveal how these ancient fish lived.
