Mazon Creek Fossil Fauna
Worm-like Animals
ribbon worms, roundworms, arrow worms, spoon worms, velvet worms, and fan worms
Archisymplectes rhoton - Schram 1973
Ribbon Worm
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Two specimens of Archisymplectes rhoton, Milwaukee Public Museum P359782 and P26065.1
Archisymplectes rhoton - R.Rock collection
Priapulites konecniorum - Schram, 1973
Penis Worm
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Priapulites konecniorum, MPM P359924.2 and P359924.1 (negative and positive halves).
Field Museum collection
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J.Wittry collection
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Paucijaculum samamithion - Schram, 1973
Arrow Worm
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Paucijaculum samamithion, in association with Essexella asherae, Braceville, IL - A.Young collection, Figure 167.1 The Mazon Creek Fossil Fauna 2012
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Pit 11, Braidwood, IL - A.Young collection
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Above right: an arrow worm attached to an Acanthotelson stimpsoni shrimp - J.Wittry collection, MC Fossil Fauna Figure 167.3
Caprinoscolex ellogimus - Jones and Thompson, 1977
Spoon Worm
Coprinoscolex ellogimus, Milwaukee Public Museum collection P25871.1
MPM P266091.2
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MPM P359823.1 (negative half)
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MPM P359823.2 (positive half)
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Coprinoscolex ellogimus, Pit 11, Braidwood, IL - A.Young collection, Figure 14.4 The Mazon Creek Fossil Fauna 2012.
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Coprinoscolex ellogimus, Pit 11, Braidwood, IL (coal mining tipple area) - A.Young collection
Pit 11, Braidwood, IL - A.Young collection,
Figure 14.3 The Mazon Creek Fossil Fauna 2012 (detail on right showing gut pellets) |
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Chicago Academy of Sciences collection
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J.Wittry collection
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Chicago Academy of Sciences collection (detail on right showing gut pellets)
Coprinoscolex ellogimus, showing digestive tract, Pit 11, Braidwood, IL - A.Young collection
Lobopodians
Ilyodes inopinata - Thompson and Jones, 1980
Velvet Worm
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Ilyodes inopinata, J.Wittry collection
Carbotubulus waloszeki - Haug et al., 2012
Phylum Incertae sedis
Microconchus carbonarius - Murchison, 1839
Once mistakenly thought to be a spiraling polychaete worm tube, now a poorly understood form. It is typically found attached to foliage and otherwise woody remains (sometimes mollusk shells).
A.Young collection, Figure 20.2, The Mazon Creek Fossil Fauna 2012.
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A.Young collection
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Left and above: Figure 20.2 (details)
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Microconchus carbonarius, Milwaukee Public Museum collection P25872
MPM P359891.1
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MPM P359891.2
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Microconchus carbonarius, Milwaukee Public Museum collection P30727.1
Chicago Academy of Sciences collection (detail on right)
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Microconchus carbonarius. on a Taeniophyllum latifolium thalloid, Milwaukee Public Museum collection P359202
Phylum Incertae sedis
Undescribed Genus and Species, Form A
Kielbasa Worm
This is the first of two forms of non-annelid worms originally assigned to Nemavermes mackeei, initially identified as a free-living, marine nematode (Schram, 1973).
The Field Museum collection
Undescribed Genus and Species, Form B
Pig-Pen Worm
This is the second of two forms of non-annelid worms originally assigned to Nemavermes mackeei (Schram, 1973).
J.Wittry collection, Figure 10.2 The Mazon Creek Fossil Fauna 2012 as Nemavermes mackeei.
Undescribed Genus and Species, Form C
Squiggly Worm
Above and below: undescribed non-annelid worm Form C, Mazon River, Morris, IL - A.Young collection
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Undescribed non-annelid worm Form C, showing annulations and gut line details, Mazon River, Morris, IL - A.Young collection
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