Also known as Pteraichnus holotype, Stokes Locality
Where: Apache County, Arizona (36.9° N, 109.1° W: paleocoordinates 33.0° N, 56.2° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Salt Wash Member (Morrison Formation), Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)
• Originally identified as Morrison Formation; later (Lockley et al. 1995) suggested to be more likely from the Summerville Formation. Lockley & Mickelson (1997) noted that Pteraichnus is normally known from levels below the Morrison, but that the original stratigraphic interpretation (of lowermost Salt Wash Member, Morrison) may be correct for the type locality only.
• bed-level stratigraphic resolution
Environment/lithology: levee; medium-grained, brown, gray sandstone and mudstone
Size class: macrofossils
Preservation: trace
Collected by W. L. Stokes in 1952
Collection methods: quarrying, surface (in situ),
• University of Utah collections
Primary reference: W. L. Stokes. 1957. Pterodactyl tracks from the Morrison Formation. Journal of Paleontology 31:952-954 [R. Butler/R. Butler]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 94678: authorized by Richard Butler, entered by Richard Butler on 09.03.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Pteraichnus saltwashensis n. gen. n. sp.
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