Mazon Creek Fossil Fauna
Sea Cucumbers, Brachiopods, and Acorn Worms
Sea Cucumbers
Achistrum sp.
Achistrum sp., Milwaukee Public Museum collection - MPM P359210.1
Achistrum sp., MPM P25878.2
Multiple specimens of Achistrum sp., J. Wittry collection, Figure 170.1 The Mazon Creek Fossil Fauna 2012
R.Rock collection
The Field Museum collection
A.Young collection - Pit 11, Braidwood, IL
Brachiopods
Lingula sp.
Lingula sp., A.Young collection - Pit 11, Braidwood, Illinois, Figure 119.3 The Mazon Creek Fossil Fauna 2012
Acorn Worms
Mazoglossus ramsdelli
Mazoglossus ramsdelli, Milwaukee Public Museum collection - MPM P359880.1
The Field Museum collection
Mazoglossus ramsdelli, The Chicago Academy of Sciences collection