Yersin Hills, Fillmore Formation, Millard County (Ordovician of the United States)

Also known as Reef 2968

Where: Utah (38.9° N, 113.3° W: paleocoordinates 7.6° S, 82.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Presbynileus ibexensis trilobite zone, Calathium calcisiltite Member (Fillmore Formation), Floian (477.7 - 470.0 Ma)

• uppermost member of Fillmore Formation; trilobite zone I (Presbynileus ibexensis)

•Original age call was mid-late Ibexian.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified grainstone

Size class: macrofossils

Primary reference: S. B. Church. 1991. A new Lower Ordovician species of Calathium, and skeletal structure of western Utah calathids. Journal of Paleontology 65(4):602-610 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61729: authorized by Wolfgang Kiessling, entered by Uta Merkel on 26.06.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Hormogoneae
 Oscillatoriales - Girvanellaceae
Girvanella sp. Nicholson and Etheridge 1878
Radiocyatha
  - Soanitidae
Calathium yersini n. sp. Church 1991