C-13 (Ordovician of the United States)

Also known as SF 287

Where: Millard County, Utah (38.9° N, 113.4° W: paleocoordinates 6.9° S, 84.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: G-1 trilobite zone, Fillmore Limestone Formation, Tulean (485.4 - 471.8 Ma)

• Ibexian; Tulean

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified siltstone

• carbonate ramp, above wave base
• grey; calcareous; abundant intraformational conglomerates

Size class: macrofossils

Preservation: replaced with silica

Collected by L.F. Hintze

Collection methods: bulk,

Primary reference: L.F. Hintze. 1951. Lower Ordovician detailed stratigraphic sections for western Utah. Utah Geological and Mineralogical Survey Bulletin 39:99 p. [A. Miller/A. Miller]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 104072: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011, edited by Melanie Hopkins

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Aulacopleurida - Hystricuridae
Parahystricurus sp. Ross 1951 trilobite
Psalikilus sp. Ross 1951 trilobite
 Phacopida - Pliomeridae
"Protopliomerops firmimarginis" = Hintzeia firmimarginis
"Protopliomerops firmimarginis" = Hintzeia firmimarginis Hintze 1952 trilobite
 Asaphida - Asaphidae
"? Asaphellus quadrata" = Aulacoparia (Aulacoparina) quadrata
"? Asaphellus quadrata" = Aulacoparia (Aulacoparina) quadrata Hintze 1952 trilobite
 Asaphida - Remopleurididae
Menoparia genalunata Ross 1951 trilobite
Gastropoda
 Murchisoniina - Hormotomidae
? Hormotoma sp. snail
impressions