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Polychaete Worm From The Pennsylvanian
OTHER INVERTEBRATES
Stock Number XIOI20

Name:   Didontogaster cordylina
Age:  Pennsylvanian
Formation:  Carbondale Formation (Francis Creek Shale)
Location:  Braidwood, Illinois
Size:  Concretion is 1.4 inches across
This specimen is not for sale
Click here for similar specimens that are for sale

Here is an unusual fossil. This is a Polychaete Worm from the Pennsylvanian of Illinois. This location has been closed to collecting for a number of years. Worms are not commonly preserved as fossils due to the absence of hard parts. There are only a few places in the world where fossil worms are found. This fossil is well preserved in a siderite concretion. Both halves of the concretion are intact so both part and counterpart of the fossil are present. The light-colored worm contrasts wonderfully with the darker concretionary matrix. This is a great example of a fossil Polychaete Worm from the Pennsylvanian.