linguicauda
Linguicauda is a genus of extinct ray-finned fish that lived during the Late Jurassic epoch. Fossils of Linguicauda have been found in what is now Europe, particularly in Germany. This ancient fish is known for its distinctive elongated body and a caudal fin that tapers to a whip-like end, a feature that gives it its name, derived from Latin words for "tongue" and "tail."
The skeletal structure of Linguicauda indicates it was a predatory fish, likely inhabiting shallow marine environments.