H-30 (Ordovician of the United States)

Also known as SF 348

Where: Millard County, Utah (38.8° N, 113.5° W: paleocoordinates 7.4° S, 83.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: J trilobite zone, Fillmore Limestone Formation, Blackhillsian (474.9 - 470.0 Ma)

• Ibexian; Blackhillsian

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified limestone

• carbonate ramp, above wave base
• silty; grey; quartz-rich; about 33% intraformational conglomerates, numerous gastropod steinkerns

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 104133: authorized by Seth Finnegan, entered by Seth Finnegan on 07.02.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Phacopida - Pliomeridae
Pseudocybele nasuta
Pseudocybele nasuta Ross 1951 trilobite
 Asaphida - Asaphidae
Isoteloides cf. polaris, "Kirkella cf. vigilans" = Ptyocephalus
Isoteloides cf. polaris Poulsen 1927 trilobite
"Kirkella cf. vigilans" = Ptyocephalus trilobite