Where: Colorado (39.5° N, 108.0° W: paleocoordinates 43.3° N, 94.5° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Green River Formation, Bridgerian (50.3 - 46.2 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: lacustrine - large; lithified mudstone
Size class: macrofossils
Preservation: adpression
Reposited in the USNM
Primary reference: C. S. Chaboo and M. S. Engel. 2009. Eocene tortoise beetles from the Green River Formation in Colorado, U.S.A. (Coleoptera: Chrysomelidae: Cassidinae). Systematic Entomology 34:202-209 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 138990: authorized by Matthew Clapham, entered by Matthew Clapham on 06.02.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Insecta | |
Gyaclavator kohlsi n. gen. n. sp.
| |
Denaeaspis chelonopsis n. gen. n. sp.
|