A possible onychophoran from the middle Pennsylvanian Mazon Creek beds of northern Illinois

I. Thompson, and D. S. Jones

1980

Article

Journal of Paleontology 54:588-596

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Taxonomy:

• Helenodora belongs to Onychophora - Thompson and Jones (1980)
• Helenodora inopinata belongs to Helenodora - Thompson and Jones (1980)