David Sligar found a large number of crinoid stems on the surface of the shale which included a few "log jam" fragments. These are groups of stems all oriented in the same direction and usually indicates the presence of a layer consisting entirely of these "log jams." Field Trip Chair Dan Cooper proceeded to show David how to dig out this layer using a hammer, a tire iron and a hand trowel.
Here are some pictures showing how this is done.
Only a few crinoid cups (calyx) were found, but amazing quantities of crinoid
stems were uncovered. Here are a few pictures of the layer that was exposed.
The Dry Dredgers and individual contributors reserve the rights to all information, images, and content presented here. Permission to reproduce in any fashion, must be requested in writing to firstname.lastname@example.org .