Muller Canyon (Triassic of the United States)

Where: Pershing County, Nevada (40.0° N, 117.6° W: paleocoordinates 10.5° N, 41.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Gymnotoceras rotelliformis ammonoid zone, Fossil Hill Member (Favret Formation), Illyrian (247.2 - 242.0 Ma)

• "Basal Gymnotoceras rotelliformis is approximately the tethyan Paraceratities trinodotus zone" [Illyrian; Anisian]

Environment/lithology: marginal marine; lithified, brown, calcareous mudstone

Size class: macrofossils

Preservation: concretion

Reposited in the FMNH

Collection methods: quarrying, surface (in situ)

Primary reference: P. M. Sander, O. C. Rieppel, and H. Bucher. 1997. A new pistosaurid (Reptilia: Sauropterygia) from the Middle Triassic of Nevada and its implications for the origin of the plesiosaurs. Journal of Vertebrate Paleontology 17(3):526-533 [M. Carrano/H. Street]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 98011: authorized by Matthew Carrano, entered by Hallie Street on 15.09.2010, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ichthyosauria - Mixosauridae
"Mixosaurus callawayi n. sp." = Phalarodon callawayi
"Mixosaurus callawayi n. sp." = Phalarodon callawayi Schmitz et al. 2004 ichthyosaur
CMC VP 7275 (holotype), FMNH PR 1804
 Sauropterygia -
Augustasaurus hagdorni n. gen. n. sp.
Augustasaurus hagdorni n. gen. n. sp. Sander et al. 1997 diapsid
FMNH PR 1974, anterior half of skeleton including skull