Mazon Creek Fossil Fauna
Arthropods
Higher Crustaceans - Class Malacostraca
Syncarids
Acanthotelson stimpsoni - Meek and Worthen, 1865
Acanthotelson stimpsoni, Milwaukee Public Museum collection P360793.1
Acanthotelson stimpsoni, MPM P360800.1
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MPM P25925.2
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Above and below left: Acanthotelson stimpsoni, Mazon River, Morris, IL - A.Young collection
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Acanthotelson stimpsoni in association with Paucijaculum samamithion, J.Wittry collection
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Acanthotelson stimpsoni, Mazon River, Morris, IL - A.Young collection (positive and negative halves)
Field Museum collection
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Acanthotelson stimpsoni, Mazon River, Morris, IL - M.Angkuw collection (positive and negative halves)
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Acanthotelson stimpsoni, Mazon River, Morris, IL - P.Anderson collection (positive and negative halves)
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Acanthotelson stimpsoni, Milwaukee Public Museum collection P359247.1 and P359247.2 (positive and negative halves)
Above and below: Acanthotelson stimpsoni - R.Rock collection
Detail of spiky telson and uropods - R.Rock collection
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Acanthotelson stimpsoni, Mazon River, Morris, IL - P.Anderson collection (positive and negative halves)
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Two specimens of Acanthotelson stimpsoni, 1.5 cm juvenile on left, Pit 11, Braidwood, IL - A.Young collection
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Chicago Academy of Sciences collection (positive and negative halves)
Acanthotelson stimpsoni, tumbled and smoothed by the Mazon River, Morris, IL - P. Anderson collection
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Two specimens of Acanthotelson stimpsoni, Chicago Academy of Sciences collection
Acanthotelson stimpsoni - R.Rock collection
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Left and above: Mazon River, Morris, IL - A.Young collection
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K.Robitschek collection
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Acanthotelson stimpsoni, Pit 2, Wilmington, IL - M.Angkuw collection
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Acanthotelson stimpsoni, Pit 11, Braidwood, IL - A.Jansen collection
Acanthotelson stimpsoni, Pit 2, Wilmington, IL - M.Angkuw collection
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Acanthotelson stimpsoni, Chicago Academy of Sciences collection
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R,Rock collection
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Acanthotelson stimpsoni - R.Rock collection
R.Rock collection
Palaeocaris typus - Meek and Worthen, 1865
Palaeocaris typus, Milwaukee Public Museum collection P360745.1
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Palaeocaris typus, Mazon River, Morris, IL - A.Young collection
Palaeocaris typus, Mazon River, Morris, IL - A.Young collection
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Palaeocaris typus, Mazon River, Morris, IL - A.Young collection (positive and negative halves)
Above and below: Palaeocaris typus, dorsal view, Mazon River, Morris, IL - A.Young collection
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Detail showing fan tail.
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Palaeocaris typus, Mazon River, Morris, IL - P.Kodat collection
Mazon River, Morris, IL - A.Young collection
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Chicago Academy of Sciences collection CHAS: Paleo: 4747,
Fig. 74.2, The Mazon Creek Fossil Fauna 2012 |
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Palaeocaris typus, dorsal view Pit 2, Wilmington, IL - A.Young collection (positive and negative halves)