Ribbon - like in form , Isopodichnus traces were likely formed by the activity of an isopod crustacean foraging within the preserved sediment .
Isopodichnus is an ichnogenus of trace fossil .
Ribbon - like in form , ichnogenus traces were likely formed by the activity of an isopod crustacean foraging within the preserved sediment .
Isopodichnus is an ichnogenus of trace fossil .