Worm Burrows

(Bioturbation)

Photographed by Michael P. Klimetz

Eocambrian

Owl Creek Mountains

WYOMING

Burrows

[Perpendicular to Bedding Plane]

Burrow

[Along Bedding Plane]

Drag (?) Mark

Photographed by Michael P. Klimetz

Passaic Formation

Triassic/Norian

Lyndhurst

NEW JERSEY