Monomorphichnus Crimes, 1970

DESCRIPTION: Individual, straight to slightly sigmoidal striations that can be repeated laterally. Some striations may be bifid; preserved in convex hyporelief and concave epirelief.

BEHAVIOR(S): Repichnia (locomotion).

ENVIRONMENTAL SETTINGS: Shallow- to deep-marine, and continental fluvial and lacustrine settings.

POSSIBLE TRACEMAKERS: Arthropods (trilobites).

GEOLOGIC RANGE: Cambrian-recent.

ADDITIONAL REFERENCES: Häntzschel 1975, Crimes & others 1977, Fillion and Pickerill 1990, Hammersburg et al. 2018

REMARKS: Paleozoic and Mesozoic Monomorphichnus were likely produced by an arthropod trying to stabilize itself while caught in bottom-water currents. The morphology may appear similar to Dimorphichnus and small, reptilian swim traces made by the manus and/or pes.
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