Heimdallia
Encyclopedia
Heimdallia is an ichnogenus comprising a strange planar trace that does not have a circular cross-section; its maker may have been fed upon by Beaconella
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The trace was probably made by a small crustacean.
Beaconella
Beaconella is an ichnogenus comprising a wide trace thought to be constructed by a burrowing arthropod ploughing through the sediment for food, leaving a mound of piled sediment at the end of each trace....
.
The trace was probably made by a small crustacean.