Presbyorniformipes Yang et al., 1995

DESCRIPTION: Tetradactyl palmated tracks. Digits II-IV proximally convergent. Digits II and IV inwardly curved. Digit I directed posteriorly. Average angle of divarication between digits II and IV of 100.7°.

BEHAVIOR(S): Repichnia

ENVIRONMENTAL SETTINGS: Continental lacustrine shorelines

POSSIBLE TRACEMAKERS: Attributed to a Presbyornis-like anseriform bird.

GEOLOGIC RANGE: Eocene

ADDITIONAL REFERENCES: Erickson, 1967 (Holotype)

REMARKS: Tracks only currently known from the Eocene Green River Formation. Yang et al. (1995) provided name and description without formal diagnosis when establishing this ichnogenera and its sole ichnospecies, P. feduccii. Often co-occur with dabble feeding traces.