Ripple Marks

Photographed by Michael P. Klimetz

Triassic/Norian

[212 mybp]

Passaic Formation

Lyndhurst

Bergen County

NEW JERSEY

Worm Burrow

Coprolite (?)

Photographed by Michael P. Klimetz

Upper Cambrian

Mount Simon Sandstone

Krukowski Quarry

Mosinee

Marathon County

WISCONSIN

Photograph Courtesy of the British Geological Survey

[Silurian]

Rhynie

UNITED KINGDOM

Photograph from Y. Tang et al., Geoscience Frontiers 3(5) (2012)

Asymmetric Ripple Marks

Late Triassic

Zhuwo Formation

CHINA

Photographed by Michael P. Klimetz

Triassic/Norian

[212 mybp]

Passaic Formation

Lyndhurst

Bergen County

NEW JERSEY

Photographed by Michael P. Klimetz

Triassic/Norian

[212 mybp]

Passaic Formation

Lyndhurst

Bergen County

NEW JERSEY

Photographed by Michael P. Klimetz

Asymmetric and Eroded/Truncated Ripple Marks

Early Permian

El Pueblo Tracksite

NEW MEXICO