Checklist for Infraclass Palaeoptera Crampton, 1915 (Ancient winged insects) and region Chelsea (Roosevelt County, Montana, USA)
List of families for Chelsea (Roosevelt County Montana) 4 Families width 5 Species
Genera for Chelsea (Roosevelt County Montana) 4 Genera with 5 Species
Species list for Chelsea (Roosevelt County Montana) 5 Species
Subnodes of Palaeoptera with occurrences in Chelsea (Roosevelt County Montana)
Links, sources and further information Palaeoptera at itis.gov
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