Turseodus is an extinct genus of ray-finned fish found in Late Triassic freshwater sediments of the United States.

[5] The lachrymal bone of Turseodus forms part of the oral margin, an unusual condition known otherwise only from the Early to Middle Triassic Pteronisculus.

Based on this synapomorphy and other similarities, a close relationship between Turseodus and Pteronisculus is hypothesized.

[6] However, a close evolutionary relationship between these genera has not yet been tested by cladistic analyses.

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