Monday, 28 September 2015

A Map Showing the Location of Cylindrical and Conical Structures in Potsdam (Group) Sandstone of Ontario and New York

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The locations in New York State are mainly based on Field Trip Guidebooks issued at Annual Meetings of the New York Geological Associati...
Tuesday, 1 September 2015

Franklin B. Hough, M.D. (1822-1885), the First to Write on Cylindrical Structures in Potsdam Sandstone

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This blog posting is written to right an historical wrong.  The wrong or slight that needs to be corrected is the failure to acknowledge tha...
Thursday, 27 August 2015

Cylindrical Structures in Potsdam Group Sandstone in Eastern Ontario - Part 2

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My blog posting from January 29, 2014 provided an introduction to cylindrical structures found in Potsdam Group sandstone of Eastern Ontario...
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Tuesday, 18 August 2015

If there's something strange in your neighborhood, who you gonna call?

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  Those that watched movies in the mid-1980's or had kids who watched television in the late 1980's will instantly recognize the ti...
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Tuesday, 21 July 2015

Reports of the Trace Fossil Climactichnites found in Central Texas

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The title for this posting is based in part on a poster presentation at a recent Geological Society of America Conference:  the South-Centra...
Thursday, 16 July 2015

Burrows or Not Burrows - Part 2

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Below are photographs of three more specimens from the Potsdam Group sandstones. Specimen 6 -  Same sandstone as produced the Protichnite...
Tuesday, 30 June 2015

Burrows or Not Burrows?

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Adolf  Seilacher (1925 – 2014) was a German palaeontologist who made major contributions to the study of trace fossils.  He is credited with...