Halquist Quarry #1 (Silurian to of the United States)

Also known as Conodonts, Byron Fm.

Where: Waukesha County, Wisconsin (43.0° N, 88.2° W: paleocoordinates 21.0° S, 53.9° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Byron Formation, Aeronian to Aeronian (440.8 - 433.4 Ma)

• "Aeronian to early Telychian"

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified, burrowed, cherty/siliceous dolomite

• "bioturbated dolomite mudstone, contains a diverse silicified fauna....This fauna represents Silurian Benthis Assemblage 5 and a relatively deep water carbonate ramp..."

Preservation: replaced with silica

Collection methods: bulk, chemical,

• "The fauna was discovered only as a result of routine processing of samples for conodonts."

Primary reference: R. Watkins. 1995. A silicified deep-water Silurian fauna from SE Wisconsin. Abstracts with Programs - Geological Society of America 27(3):94-94 [J. Alroy/M. Sommers/A. Clement]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 2844: authorized by John Alroy, entered by Mike Sommers on 21.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Conodonts only.
Conodonta
 Belodellida - Belodellidae
Walliserodus curvatus Branson and Branson 1947 conodont
 Prioniodontida - Distomodontidae
 Prioniodontida - Prioniodinidae
"Aspeluindia fluegeli" = Pseudolonchodina
"Aspeluindia fluegeli" = Pseudolonchodina conodont
originally entered as "Aspelundia fluegeli"
 Ozarkodinida - Spathognathodontodae
"Ozarkodina cf. polinclinata" = Wurmiella polinclinata
"Ozarkodina cf. polinclinata" = Wurmiella polinclinata Nicoll and Rexroad 1968 conodont
originally entered as "Ozarkodina cf. polinclinata"
 Ozarkodinida - Pterospathodontidae
Polygnathoides sp. Branson and Mehl 1933 conodont
n. sp.