Humphreys clay pit, Port Barnett (Carboniferous of the United States)

Where: Pennsylvania (41.2° N, 79.1° W: paleocoordinates 8.1° S, 18.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pottsville Formation, Moscovian (315.2 - 307.0 Ma)

• Brookville clay horizon 10-15'above Homewood shales (Desmoinesian)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithified siliciclastic sediments

• Appalachian foreland basin

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
 Blattodea - Archimylacridae
? Atimoblatta flexuosa n. sp. Cockerell 1918 cockroach
USNM 64348
 Blattodea - Mylacridae
? Phthinomylacris pauper n. sp., Brachymylacris bassleri n. sp., Ptilomylacris medialis n. gen. n. sp., "Stenomylacris sp." = Dictyomylacris
? Phthinomylacris pauper n. sp. Cockerell 1918 cockroach
USNM 64347
Brachymylacris bassleri n. sp. Cockerell 1918 cockroach
USNM 64345
Ptilomylacris medialis n. gen. n. sp. Cockerell 1918 cockroach
USNM 64346
"Stenomylacris sp." = Dictyomylacris Brongniart 1894 cockroach
 Dicondylia - Cobaloblattidae
Cobaloblatta simulans n. gen. n. sp.
Cobaloblatta simulans n. gen. n. sp. Cockerell 1918 winged insect
USNM 64344
 Dicondylia - Phoberoblattidae
Phoberoblatta reticulata n. sp. Cockerell 1918 winged insect
USNM 64343