West Union Canyon (Triassic of the United States)

Where: Nye County, Nevada (38.9° N, 117.6° W: paleocoordinates 15.5° N, 53.7° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Klamathites macrolobatus ammonoid zone, Luning Formation, Lacian (221.5 - 215.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, nodular, silty limestone

• "These sediments appear to represent an early transgressive episode in a now dismembered, shallow marine basin of at least Late Triassic (Karnian) through Early Jurassic (Toarcian) age (Oldow, 1981)."
• "part of a sequence of nodular and wavy bedded, discontinuously cross-stratified, organic-rich, silty and shaly limestones"; "The Luning Formation in the Shoshone Mountains consists of basal chert pebble conglomerates and sandstones, overlain by a series of highly organic carbonate-rich shales and silty limestones, and capped by comparatively pure limestone and dolomite."

Size classes: macrofossils, mesofossils, microfossils

Collected by M. Wheat, C. L. Camp in the 1950s

Primary reference: J. A. Hogler and R. A. Hanger. 1989. A new condrophorine (Hydrozoa, Velellidae) from the Upper Triassic of Nevada. Journal of Paleontology 63(2):249-251 [M. Carrano/H. Street]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 102368: authorized by Matthew Carrano, entered by Hallie Street on 14.01.2011, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Ichthyosauria - Shastasauridae
Shonisaurus mulleri n. sp., Shonisaurus popularis, Shonisaurus silberlingi n. sp.
Shonisaurus mulleri n. sp. Camp 1976 ichthyosaur
UNLV FZVE-5 (holotype), "associated pubis, ischia, ilium, femur, tibia, and other paddle elements, with ribs and fragments"; UNLV FZVE-6, humerus
Shonisaurus popularis Camp 1976 ichthyosaur
Shonisaurus silberlingi n. sp. Camp 1976 ichthyosaur
UNLV FZVE-7 (holotype), "humerus, radius, ulnare, and large neural spine"
Hydrozoa
 Siphonophorida - Velellidae
Plectodiscus berlinensis n. sp.
Plectodiscus berlinensis n. sp. Hogler and Hanger 1989
UCMP 38211