Where: Hampden County, Massachusetts (42.1° N, 72.6° W: paleocoordinates 23.8° N, 18.6° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Portland Formation (Agawam Group), Hettangian to Hettangian (201.3 - 190.8 Ma)
• also called "Portland beds", Longmeadow Sandstone
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; red sandstone
Size class: macrofossils
Collected by W. Smith in 1855; reposited in the YPM
Collection methods: salvage, mechanical,
• discovered during blasting operations by William Smith, given by General Whitney to Edward Hitchcock for study in October 1855
Primary reference: E. Hitchcock. 1855. Shark remains from the Coal Formation of Illinois, and bones and tracks from the Connecticut River Sandstone. The American Journal of Science and Arts, series 2 20(60):416-417 [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 47199: authorized by Matthew Carrano, entered by Matthew Carrano on 18.02.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
"Megadactylus polyzelus n. gen. n. sp." = Anchisaurus polyzelus
"Megadactylus polyzelus n. gen. n. sp." = Anchisaurus polyzelus Hitchcock 1865 sauropodomorph AM 41/109
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