Where: Berks County, Pennsylvania (40.3° N, 75.7° W: paleocoordinates 14.8° N, 20.6° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Passaic Formation (Chatham Group), Norian (228.0 - 208.5 Ma)
• two footprint-bearing beds
• group of beds-level stratigraphic resolution
Environment/lithology: lacustrine; siltstone and sandstone
Size class: macrofossils
Preservation: mold/impression, trace
Collected by S. Silvestri
Collection methods: surface (in situ),
Primary reference: P. E. Olsen. 1989. Stop 5.3: Douglasville footprint quarries. In P. E. Olsen, R. W. Schlische, & P. J. W. Gore (eds.), Tectonic, Depositional, and Paleoecological History of Early Mesozoic Rift Basins, Eastern North America. Gulf, North Carolina, USA to Parrsboro, Nova Scotia, Canada. July 20–30, 1989. International Geological Congress Field Trip T-351 79-80 [M. Carrano/M. Carrano]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 84111: authorized by Matthew Carrano, entered by Matthew Carrano on 17.09.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Grallator sp., "Atreipus milfordensis" = Grallator tuberosus
Grallator sp. Hitchcock 1858 theropod
"Atreipus milfordensis" = Grallator tuberosus Hitchcock 1836 theropod | |
Gwyneddichnium sp. Bock 1952 archosaur | |
Batrachopus sp. Hitchcock 1845 aetosaur | |
Brachychirotherium sp. Beurlen 1950 archosaur | |
Rhynchosauroides sp. Maidwell 1911 squamates |