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Project Noah Nature School
Trace fossils (a.k.a. ichnofossils) of what is most likely worm tracks. Trace fossils (also called ichnofossils or lebenspuren) are the evidence of animal's activity. The rock measure ~35 mm (1.4 in) wide, ~34.75 mm (1.36 in) long and ~3.8 (.15 in) thick. The long track fossil measures ~23 mm (.93 in) long and ~2 mm (.08 in wide). The shorter track fossil measures ~13 mm (.52 in) long and ~2 mm (.07 in) wideThis fossil dates to the Devonian Period (416-359.2 million years ago). I believe the rock is Chagrin shale.
Rocky brook (stream) bed. Gully Brook, Willoughby, Ohio, USA.
The extreme close up pictures were taken with a Digital Blue QX5 USB microscope at 10x power.
Spotted on Aug 11, 2012
Submitted on Sep 26, 2012
1 Comment
Added Measurements to the description.