D1966 CO. Meiklejohn mud-mound (Ordovician of the United States)

Also known as USGS D 1966 CO. Reef 2366

Where: Nye County, Nevada (36.9° N, 116.7° W: paleocoordinates 6.0° S, 83.9° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Paralenorthis-Orthidiella brachiopod zone, Antelope Valley Formation (Pogonip Group), Rangerian (470.0 - 470.3 Ma)

• Lower Antelope Valley Limestone, 50 ft above the base of the mud-mound, 118 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 classes: macrofossils, mesofossils

Preservation: original aragonite, original calcite, replaced with silica

Reposited in the USGS, USNM

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 80059: authorized by Wolfgang Kiessling, entered by Uta Merkel on 02.04.2008, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Cheiruridae
Kawina wilsoni Ross 1972 trilobite
 Proetida - Telephinidae
Carolinites cf. killaryensis Stubblefield 1950 trilobite
 Proetida - Dimeropygidae
? Dimeropyge sp. Opik 1937 trilobite
 Proetida - Bathyuridae
Bathyurellus "sp. 3" Billings 1865 trilobite
 Corynexochida - Illaenidae
Illaenus sp. Dalman 1827 trilobite
Ostracoda indet. Latreille 1802 ostracod
Gastropoda indet. Cuvier 1795 snail
 Euomphalina - Raphistomatidae
Ceratopea cf. lemonei2 Flower 1968 snail
 Murchisoniina - Lophospiridae
Lophospira perangulata2 Hall 1847 snail
 Conocardiida - Eopteriidae
Eopteria cf. richardsoni1 Billings 1865
pl. 24 f. 10
 Orthotetida - Triplesiidae
? Onychoplecia sp. Cooper 1956
 Orthida -
Orthida indet. Schuchert and Cooper 1932
 Pentamerida - Camerellidae
 Pentamerida - Tetralobulidae
Cuparius sp. Ross 1971