Also known as Riggs Hill, Fruita, Holt's Quarry 1, Holt's Quarry 2, CO-46, CO-47
Where: Mesa County, Colorado (39.1° N, 108.6° W: paleocoordinates 35.1° N, 55.3° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Brushy Basin Member (Morrison Formation), Kimmeridgian to Kimmeridgian (157.3 - 145.0 Ma)
• 116 ft below top of member (48 ft above Riggs Quarry 13)
• bed-level stratigraphic resolution
Environment/lithology: "channel"; sandstone and mudstone
Size class: macrofossils
Collected by Holt & Hansen in 1937
Collection methods: quarrying, surface (float), surface (in situ),
Primary reference: E. L. Holt. 1940. The dinosaurs of the Grand River Valley. Journal of the Colorado-Wyoming Academy of Science 2(6):28-29 [M. Carrano/M. Carrano]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 56684: authorized by Matthew Carrano, entered by Matthew Carrano on 22.11.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
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Stegosaurus sp. Marsh 1877 ornithischian 31 caudal vertebrae, 4 spines, 2 plates, 1 femur, several ribs
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