This is a lot of fossiliferous matrix rock from the Devonian period (approx. 359 to 419 million years ago). This material was recovered from the McCoy's Ferry locality, Mahantango Formation, Washington County, Maryland, This material has been known to contain trilobites, crinoids, brachiopods, and other fossils of the period. This lot shows numerous crinoid column impressions and may contain other fossils when properly prepared. The second photo shows a trilobite in the matrix (near the tip of the pen being used as a pointer).
Refer to the photos. The black centimeter cube is shown for scale and is not included. You are purchasing all of the material shown. Your purchase will include an ID label. There is approx. 360 grams of material.