USNM Loc. 11157. Gazelle region (Silurian of the United States)

Also known as Cymbidium Community, Payton Ranch Limestone, Siskiyou Co., California

Where: California (41.5° N, 122.5° W: paleocoordinates 6.6° S, 66.8° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Payton Ranch Limestone Formation, Ludlow (427.4 - 423.0 Ma)

• Basal part of the Payton Range Limestone.

Environment/lithology: open shallow subtidal; grainstone

• "Geographic and stratigraphic relations to other level bottom communities indicate a BA 3 position. A relatively rough water environment is likely."

•SEP environmental call based on scanty given info.

• "Occurs as either articulated or disarticulated specimens in a fine-grained to fine, sand-sized matrix. Crossbeds and prominent ripples are absent as is thinly layered or laminated bedding."

Size class: macrofossils

Reposited in the USNM

• Text gives abundances of brachiopods.

Primary reference: A. J. Boucot. 1999. Some Wenlockian-Geddinian, chiefly brachiopod dominated communities of North America. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 549-591 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 24803: authorized by Michael Foote, entered by Michael Foote on 20.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Pentamerida - Subrianidae
Conchidium sp., Cymbidium sp.
Conchidium sp. Oehlert 1887
Cymbidium sp. Kirk 1926
 Atrypida - Septatrypidae
? Atrypoidea sp.
? Atrypoidea sp. Mitchell and Dun 1920
 Orthida - Hesperorthidae
Dolerorthis sp.
Dolerorthis sp. Schuchert and Cooper 1931
genus name in quotes
Trilobita
  -
Trilobita indet.
Trilobita indet. Walch 1771 trilobite
Anthozoa
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral