D1992 CO. Meiklejohn mud-mound (Ordovician of the United States)

Also known as USGS D 1992 CO; Reef 2366

Where: Nye County, Nevada (36.9° N, 116.7° W: paleocoordinates 6.4° S, 82.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Orthidiella brachiopod zone, Antelope Valley Formation (Pogonip Group), Whiterockian (470.0 - 457.3 Ma)

• Lower Antelope Valley Limestone, lower 20 ft of the mud-mound, 88 ft above base of the formation, Orthidiella Zone, Early Whiterockian

• bed-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

• 80 m thick and 300 m wide mud-mound in an outer ramp setting in relatively deep and cold water. Core of the mound with zebra limestone bands and stromatactis structures.

Size class: macrofossils

Reposited in the USGS

Primary reference: R. J. Ross, Jr. 1972. Fossils from the Ordovician bioherm at Meiklejohn Peak, Nevada. United States Geological Survey Professional Paper 685 [S. Finnegan/S. Finnegan/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80055: authorized by Wolfgang Kiessling, entered by Uta Merkel on 02.04.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Deuteropoda
  -
Ostracoda indet.
Ostracoda indet. Latreille 1802 ostracod
Trilobita
 Phacopida - Cheiruridae
? Kawina sp.
? Kawina sp. Barton 1916 trilobite
 Asaphida - Nileidae
? Nileus sp.
? Nileus sp. Dalman 1827 trilobite
Rhynchonellata
 Orthida - Orthidiellidae
? Orthidiella sp.
? Orthidiella sp. Ulrich and Cooper 1936
 Pentamerida - Camerellidae
Idiostrophia sp.
Idiostrophia sp. Ulrich and Cooper 1936