Benbolt Formation, Washburn, Tennessee (Ordovician of the United States)

Where: Grainger County, Tennessee (36.3° N, 83.6° W: paleocoordinates 29.1° S, 63.8° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Benbolt Formation, Caradoc (458.4 - 449.5 Ma)

• Ashbyan

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified, peloidal, shelly/skeletal, gray, argillaceous packstone and lithified, calcareous mudstone

• Lithology based on field notes of S.M. Holland

Size class: macrofossils

Preservation: original calcite

Primary reference: R. S. Bassler. 1950. New genera of American Middle Ordovician "Cystoidea". Journal of the Washington Academy of Sciences 40(9):273-277 [S. Holland/S. Holland/S. Holland]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37905: authorized by Steven Holland, entered by Steven Holland on 27.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Eocrinoidea
  - Palaeocystitidae
Schuchertocystis radiata