Where: Santa Cruz County, Arizona (31.7° N, 110.8° W: paleocoordinates 39.6° N, 83.9° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Fort Crittenden Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; red, calcareous mudstone
Size class: macrofossils
Collection methods: Matrix was removed with a pneumatic drill after periodic submergence in weak formic acid (7%, buffered with calcium phosphate)
Primary reference: M. D. D'Emic, J. A. Wilson, and R. Thompson. 2010. The end of the sauropod dinosaur hiatus in North America. Palaeogeography, Palaeoclimatology, Palaeoecology 297:486-490 [P. Mannion/P. Mannion/P. Mannion]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 138220: authorized by Philip Mannion, entered by Philip Mannion on 07.01.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Hadrosauridae indet. Cope 1869 hadrosaurid ASDM 482 & 552 (two posterior cervical vertebrae) and ASDM 485 (one partial middle dorsal vertebra)
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Gastropoda | |
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