UCMP loc. D-5679, Bare Mountain (Ordovician of the United States)

Also known as Orthidiella community

Where: Nye County, Nevada (36.9° N, 116.7° W: paleocoordinates 6.5° S, 81.8° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Orthidiella brachiopod zone, Antelope Valley Formation (Pogonip Group), Darriwilian (467.3 - 458.4 Ma)

• D5678 is 103.1 m stratigraphically above the base of the formation. D5679 is 19 m stratigraphically above D5678. D5680 is 7.6 m stratigraphically above D5679.

•

•"lower to mid Middle Ord. (Whiterlockian= Llanvirn). A widespread community; found in Great Basin as well as Canada"

•

Environment/lithology: shallow subtidal; lime mudstone

• "lime mud and silt (silty ls and nodular ls) thin-bedded, laminated sltst and silty ls. shallow subtidal (BA2) miogeocline (stable)."

Size classes: macrofossils, mesofossils

Primary reference: W. B. N. Berry, D. A. Lawson, and E. S. Yancey. 1979. Species diversity patterns in some middle Ordovician communities from California-Nevada. Palaeogeography, Palaeoclimatology, Palaeoecology 26:99-116 [M. Uhen/J. Ju/J. Ju]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 226922: authorized by Jonathan Marcot, entered by Jonathan Marcot on 09.08.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

• "Berry, Lawson and Yancey 1979. Ross 1967 Prof Paper 523D"
Show authors, comments, and common names
Trilobita
 Asaphida - Nileidae
Nileus sp.
Nileus sp. Dalman 1827 trilobite
 Phacopida - Pliomeridae
Pseudomera sp., Ectenonotus sp.
Pseudomera sp. Holliday 1942 trilobite
Ectenonotus sp. Raymond 1920 trilobite
Rhynchonellata
 Orthida - Anomalorthidae
Anomalorthis sp.
Anomalorthis sp. Ulrich and Cooper 1936
 Orthida - Orthidiellidae
Orthidiella longwelli
Orthidiella longwelli Ulrich and Cooper 1938
 Orthida - Orthidae
"Orthambonites eucharis" = Sivorthis eucharis
"Orthambonites eucharis" = Sivorthis eucharis Ulrich and Cooper 1938
Strophomenata
 Strophomenida - Plectambonitidae
Ingria cloudi
Ingria cloudi Ulrich and Cooper 1936
 Parablastoidea - Blastocystidae
Blastoidocrinus sp.
Blastoidocrinus sp. Billings 1859
Hexactinellida
 Lyssacinosa - Stiodermatidae
Hyalostelia sp.
Hyalostelia sp. glass sponge
Demospongiae
 Lithistida - Anthaspidellidae
Calycocoelia sp.
Calycocoelia sp. Bassler 1927 demosponge
 Tetractinellida - Archaeoscyphidae
Nevadocoelia sp.
Nevadocoelia sp. Bassler 1927 demosponge