Pteroidichthys

Pteroidichthys is an extinct genus of prehistoric bony fish that lived during the Middle Devonian period (approximately 385 to 375 million years ago). These fish were characterized by their unique body shape and distinctive fin structure, which distinguish them from other Devonian fish. The genus is known from fossil remains found in the Hunsrück Slate of Germany.

Common Names

Pteroidichthys does not have any commonly used vernacular names. It is primarily referred to by its scientific name.

Characteristics

Pteroidichthys exhibited a number of distinctive features:

  • Flattened Body: Their bodies were flattened dorsoventrally, meaning they were thin from top to bottom. This shape may have allowed them to live in a benthic (bottom-dwelling) environment.
  • Large Pectoral Fins: Pteroidichthys possessed large, wing-like pectoral fins. These fins were likely used for maneuvering and possibly for gliding through the water.
  • Small Dorsal Fin: A small dorsal fin was present on their back.
  • Absence of Pelvic Fins: Pteroidichthys lacked pelvic fins.
  • Small Mouth: They had a relatively small mouth, likely suited for feeding on small invertebrates.

Environment

Pteroidichthys fossils have been discovered in the Hunsrück Slate, a famous Lagerstätte (fossil deposit) in Germany. This suggests that they inhabited shallow, marine environments.

References

Fossil Museum
Wikipedia: Hunsrück Slate