Florissant (Stump Hill) (Eocene of the United States)

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

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Florissant Formation, Chadronian (37.2 - 33.9 Ma)

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

• "shales"

Size class: mesofossils

Preservation: adpression

Collected by Claude W. Hibbard in 1948; reposited in the UMMP

• Associated with the catalogued specimens received from The University

•of Michigan, were three unnumbered specimens not mentioned in the list

•that accompanied the shipment. Possibly also collected by Hibbard and University of Michigan graduate students.

Primary reference: F. M. Hull. 1960. A new genus and four new species of fossil Diptera from Montana and Colorado. Contributions from the Museum of Paleontology, University of Michigan 15(11):269-279 [C. Labandeira/C. Labandeira/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 132748: authorized by Matthew Clapham, entered by Matthew Clapham on 25.08.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Diptera - Syrphidae
Syrphus petrographicus n. sp. Hull 1960 hover fly
UMMP 35457
Syrphus willistoni Cockerell 1909 hover fly
UMMP 35458