Professor Gordon Baird points out the "grotesque" concretion layer on a strat column while standing directly in front of it. This is unit "h" from the NYSGA 2006 field trip B3 guide book, stop 3. Going up the statigraphic column, this unit is followed by the North Evans Limestone, a resistant layer of the Genundawa Limestone and then the West River Shale. This section is on an unnamed tributary of Cayuga Creek.