Name: Bivalvia; Pectinoida, Aviculopectinidae, Aviculopecten mazonensis
Geological Time: Pennsylvanian (~300 m.y.a.)
Size (25.4mm=1 inch): 20 mm long by 20 mm wide in a 32 mm by 30 mm and 35 mm by 30 mm nodule
Fossil Site: Pit 11, Francis Creek shale, Morris, Illinois (Mazon Creek)
Code: CB06
Price: $40.00 - sold
 Description:
The Mazon Creek deposits of the region near Braidwood, Illinois rival
the other famous Lagerstatten of the Burgess Shale, Solnhofen, and
Liaoning for the variety of detailed life preserved. Many exquisitely-preserved
specimens are found in the ironstone nodules that make up the deposits.
The majority of collecting areas are the spoil heaps of abandoned
coal mines, the most famous of which is Peabody Coal Pit 11. Pit 11
now serves as a cooling pond for the Braidwood nuclear power plant,
but with over 100 other localities, specimens still come to light.
The pectinoids are commonly referred to as scallops. This specimen,
coming from an old collection has that identification marked on the
outside of the specimen, along with an inventory number and collection
date. |
