D1968 CO. Meiklejohn mud-mound (Ordovician of the United States)

Also known as USGS D 1968 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, 168 ft above the base of the mud-mound, 236 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 80062: authorized by Wolfgang Kiessling, entered by Uta Merkel on 02.04.2008, edited by Melanie Hopkins

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Harpetida - Harpetidae
"Selenoharpes sp." = Scotoharpes
"Selenoharpes sp." = Scotoharpes Lamont 1948 trilobite
 Phacopida - Pliomeridae
Pliomerops sp., Ectenonotus sp.
Pliomerops sp. Raymond 1905 trilobite
Ectenonotus sp. Raymond 1920 trilobite
 Phacopida - Cheiruridae
Heliomera cf. albata, Xystocrania pyriformis n. sp., Kawina wilsoni
Heliomera cf. albata Whittington 1963 trilobite
Xystocrania pyriformis n. sp. Ross 1972 trilobite
Kawina wilsoni Ross 1972 trilobite
 Corynexochida - Illaenidae
Harpillaenus rossi n. sp., Illaenus "sp. B", Illaenus "sp. D", Illaenus "sp. E", ? Illaenus "sp. F", Illaenus cf. auriculatus
Harpillaenus rossi n. sp. Fortey and Droser 1999 trilobite
Illaenus "sp. B" Dalman 1827 trilobite
Illaenus "sp. D" Dalman 1827 trilobite
Illaenus "sp. E" Dalman 1827 trilobite
? Illaenus "sp. F" Dalman 1827 trilobite
Illaenus cf. auriculatus Ross and Barnes 1967 trilobite
 Proetida - Telephinidae
Carolinites sp.
Carolinites sp. Kobayashi 1940 trilobite
 Lichida - Lichidae
Apatolichas cf. jukesi
Apatolichas cf. jukesi Billings 1865 trilobite
 Trinucleida - Raphiophoridae
Endymionia cf. meeki
Endymionia cf. meeki Billings 1862 trilobite
 Asaphida - Nileidae
Nileus sp.
Nileus sp. Dalman 1827 trilobite
 Ptychopariida - Raymondinidae
Glaphurus sp.
Glaphurus sp. Raymond 1905 trilobite
Paragastropoda
 Mimospirida - Onychochilidae
? Helicotis sp.
? Helicotis sp. Koken and Perner 1925
 Mimospirida - Clisospiridae
cf. Clisospira sp.
cf. Clisospira sp. Billings 1865
Strophomenata
 Strophomenida - Plectambonitidae
Ingria cloudi
Ingria cloudi Ulrich and Cooper 1936
Rhynchonellata
 Orthida - Orthidae
"Orthambonites cf. minusculus" = Paralenorthis minusculus
"Orthambonites cf. minusculus" = Paralenorthis minusculus Phleger 1933
 Pentamerida - Camerellidae
Idiostrophia lenticularis n. sp., Idiostrophia valdari n. sp.
Idiostrophia valdari n. sp. Ross 1972