Florissant (Twenhofel collection, University of Kansas) (Eocene of the United States)

Where: Colorado (38.9° N, 105.3° W: paleocoordinates 40.4° N, 97.0° W)

• coordinate based on nearby landmark

When: Chadronian (37.2 - 33.9 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, diatomaceous, tuffaceous shale

Size class: macrofossils

Preservation: adpression

Reposited in the YPM

• Repository: collection of W.H. Twenhofel of the University of Kansas (now apparently at YPM)

Primary reference: A. I. Petrunkevitch. 1922. Tertiary Spiders and Opilionids of North America. Connecticut Academy of Arts and Sciences 25:211-279 [D. Smith/A. Kinchloe/A. Kinchloe]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35058: authorized by Dena Smith, entered by April Kinchloe on 28.10.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

 Araneae - Araneidae
Tethneus twenhofeli n. sp. Petrunkevitch 1922 orb-weaving spider
YPM 25588