Where: Pennsylvania (41.2° N, 79.1° W: paleocoordinates 7.6° S, 17.0° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Pottsville Formation, Westphalian D (309.8 - 307.5 Ma)
• Brookville clay horizon 10-15' above Homewood shales (Desmoinesian), correlated with the Upper Mercer Coal.
• group of beds-level stratigraphic resolution
Environment/lithology: terrestrial; lithified siliciclastic sediments
Size class: macrofossils
Preservation: mold/impression, adpression
Collected by Harvey Bassler in 1916; reposited in the USNM
Primary reference: T. D. A. Cockerell. 1918. New species of North American fossil beetles, cockroaches, and tsetse flies. Proceedings of the United States National Museum 54:301-311 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 140162: authorized by Matthew Clapham, entered by Matthew Clapham on 04.03.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
| Insecta | |
"? Phthinomylacris pauper n. sp." = Discoblatta pauper
| |
Cobaloblatta simulans n. gen. n. sp.
| |
"Phoberoblatta reticulata n. sp." = Phylomylacris reticulata
| |
Ptilomylacris medialis n. gen. n. sp., "Stenomylacris sp." = Dictyomylacris, Brachymylacris bassleri n. sp.
"Stenomylacris sp." = Dictyomylacris Brongniart 1894 cockroach | |
"? Atimoblatta flexuosa n. sp." = Plagioblatta flexuosa
| |