ammonites
Clubiona arcana Scudder 1890 (spider)

Arachnida - Araneae - Drassidae

Full reference: S. H. Scudder. 1890. The Tertiary Insects of North America. Report of the United States Geological Survey of the Territories XIII:1-734

Belongs to Clubiona according to S. H. Scudder 1890

Sister taxon: Clubiona latebrosa

Type specimen: 2831, an exoskeleton. Its type locality is Florissant (USGS collection), which is in an Eocene lacustrine - large shale/volcaniclastic in the Florissant Formation of Colorado.

Ecology: