Section 1/Locality 11202 (Triassic of the United States)

Where: Nye County, Nevada (38.9° N, 117.6° W: paleocoordinates 10.4° N, 46.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Luning Formation, Carnian (237.0 - 228.0 Ma)

• The Luning Formation is a remnant of a tectonically dismembered Lower Mesozoic carbonate platform complex exposed in scattered ranges throughout west-central Nevada. It rests unconformably upon different, often unamed, Late Paleozoic and Triassic units in each outcrop, but is regoinally overlain by the Upper Triassic through Lower Jurassic Gabbs and Sunrise Formations.

• group of beds-level stratigraphic resolution

Environment/lithology: basinal (); lithified, silty wackestone and lithified, silty packstone

• The lowest, clastic member consists of 250m of chert pebble conglomerates, silty sandstones, and argillites. Except for rare fragments of petrified wood, these sediments are without fossils. The shaly limestone and calcareous shale members, each 200m thick, overlie the clastic unit. These are formed of interbedded silty and shaly limestones, limey shales, mudstones, and claystones, and contain a rich fossil component. The upper most carbonate member is a 400m thick sequence of comparatively silt- and clay-free limestones and secondary dolomites. This unit is also characterized by an abundance of fossils. The upper, fossi-bearing members of the Luning Formation are the focus of this report.

Size class: macrofossils

Reposited in the UCMP

Collection methods: bulk,

Primary reference: J. A. Hogler. 1992. Community structure, paleoecology, and depositional environments within the Upper Triassic Luning Formation of Nevada. [D. Bottjer/N. Bonuso/N. Bonuso]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 32527: authorized by David Bottjer, entered by Nicole Bonuso on 08.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
  -
Bivalvia conc
 Nuculanida - Nuculanidae
cf. Nuculana sp.
cf. Nuculana sp. Link 1807 pointed nut clam
 Cardiida - Cardiidae
Septocardia sp.
Septocardia sp. Hall 1877 cockle
Gastropoda
  -
Gastropoda "a"
Gastropoda "a" Cuvier 1795 snail
"Snail a"