Also known as Segisaurus type, UCMP V338, Camp
Where: Coconino County, Arizona (36.8° N, 110.5° W: paleocoordinates 23.9° N, 48.3° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Navajo Sandstone Formation (Glen Canyon Group), Pliensbachian to Pliensbachian (190.8 - 174.1 Ma)
• fossil found 500 feet above the base of the Navajo Sandstone, measured from the top of the underlying Wingate Sandstone, "and 100 feet below its upper level as exposed on the plateau of Skeleton (Zilh-nez') Mesa"
•
•Navajo Sandstone forms uppermost part of Glen Canyon Group, and is Early Jurassic, but probably not older than Pliensbachian (Irmis 2005. A review of the vertebrate fauna of the Lower Jurassic Navajo Sandstone in Arizona. Mesa Southwest Museum Bulletin 11:55–71)
• bed-level stratigraphic resolution
Environment/lithology: dune; lithified, hematitic, red, yellow, calcareous sandstone and poorly lithified, red shale
Size class: macrofossils
Collected by R. H. Thomas & M. Littlesalt in 1933; reposited in the UCMP
Collection methods: quarrying, mechanical,
• Collected during the 1933 Rainbow Bridge-Monument Valley Expedition, led by A. Hall, VanderHoof & Camp. Discovered by student Robert H. Thomas and Navajo Max Littlesalt.
Primary reference: Anonymous. 1933. Bones of a bird-like dinosaur. Science 78 (supp.)(2033):6-7 [M. Carrano/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 25306: authorized by Matthew Carrano, entered by Matthew Carrano on 07.09.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Segisaurus halli n. gen. n. sp.
Segisaurus halli n. gen. n. sp. Camp 1936 coelophysoid |