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 (480.8 - 474.9 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 and Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Disparida - Athenacrinidae
Athenacrinus broweri1
Athenacrinus broweri1 Guensburg et al. 2020 Sea lily
Gastropoda
 Murchisoniina - Hormotomidae
? Hormotoma sp.2
? Hormotoma sp.2 snail
impressions
Trilobita
 Asaphida - Asaphidae
"? Asaphellus quadrata" = Aulacoparia (Aulacoparina) quadrata2
"? Asaphellus quadrata" = Aulacoparia (Aulacoparina) quadrata2 Hintze 1953 trilobite
 Asaphida - Remopleurididae
Menoparia genalunata2
Menoparia genalunata2 Ross 1951 trilobite
 Phacopida - Pliomeridae
"Protopliomerops firmimarginis" = Hintzeia firmimarginis2
"Protopliomerops firmimarginis" = Hintzeia firmimarginis2 Hintze 1953 trilobite
 Proetida - Hystricuridae
Parahystricurus sp.2, Psalikilus sp.2
Parahystricurus sp.2 Ross 1951 trilobite
Psalikilus sp.2 Ross 1951 trilobite
1Guensburg et al. 2020; 2Hintze 1953