Mazon Creek Fossil Fauna
Mollusks
Chitons, Gastropods, and Cephalopods
Chitons
Note: The image above left is of Stenoplax sp., a living Pacific chiton from the San Diego, California, area.
Glaphurochiton concinnus - Richardson, 1956
Above and below: Glaphurochiton concinnus - C.Davis collection
Glaphurochiton concinnus, showing radula - J.Wittry collection
R.Rock collection
Glaphurochiton concinnus - R.Rock collection (positve and negative halves)
Gastropods
Naticopsis sp. - McCoy, 1844
Naticopsis sp. - MIlwaukee Public Museum collection P26292.1 (detail below, showing growth lines)
Euphemites richardsoni - Schindel and Yochelson, 1979
Euphemites richardsoni, Chicago Academy of Sciences collection CHAS: Paleo: 2001.3.947.1,
Figure 102.3 The Mazon Creek Fossil Fauna 2012
Figure 102.3 The Mazon Creek Fossil Fauna 2012
Euphemites richardsoni - R.Rock collection (positive and negative halves)
Braceville, IL - A.Young collection
Above and below: Euphemites richardsoni, Braceville, IL - A.Young collection
Hypselentoma aff. perhumerosa - Schindel and Yochelson, 1979
Strobeus cf. primigenius - Conrad, 1835
Strobeus cf. primigenius on Essexella asherae, Chicago Academy of Sciences collection,
CHAS: Paleo: 2001.3.958.2, Figures 103.2 and 167.4 The Mazon Creek Fossil Fauna 2012
CHAS: Paleo: 2001.3.958.2, Figures 103.2 and 167.4 The Mazon Creek Fossil Fauna 2012
Above and below: Strobeus cf. primigenius on Essexella asherae - R.Rock collection (positive and negative halves)
Strobeus cf. primigenius on Essexela asherae, Pit 11, Braidwood, IL - A.Young collection
Straparollus (Euomphalus) sp. - Schindel and Yochelson, 1979
Straparollus (Euomphalus) sp., Pit 11, Braidwood, IL - A.Young collection (positive and negative halves)
Cephalopods
Wiedeyoceras sp.
Weideyoceras sp. discoidal cephalopods, Milwaukee Public Museum collection P28701 and P28702.2
Jeletzkya douglassae - Johnson and Richardson, 1968
Science magazine, February 2, 1968, showing Jeletzkya douglassae on front cover