Ignotornis Mehl, 1931


JUNIOR SYNONYM(S): N/A

DESCRIPTION: Semipalmated, tetradactyl tracks with a prominent hallux (digit I) that is about ⅓ the length of the total track. Hallux is postero-medially directed. The space between digits III–IV is more anteriorly directed than the space between digits II–III. Digits III–IV have a more developed webbing than digits II–III. The average angle of divarication is between 105 to 125 degrees. Stride length is short and the tracks have an inward rotation of about 15 degrees. Length of track with hallux is about 5.5 cm and the width is about 4 cm.

BEHAVIOR(S): Repichnia

ENVIRONMENTAL SETTINGS: Water-margin environments.

POSSIBLE TRACEMAKERS: Shorebirds

GEOLOGIC RANGE: Cretaceous

ADDITIONAL REFERENCES: Emended in Kim et al., 2012. See also Fiorillo et al., 2010; Lockley et al., 1992