Northeast of Preuss Creek (Conodonts) (Triassic of the United States)

Where: Bear Lake County, Idaho (42.5° N, 111.2° W: paleocoordinates 11.8° N, 35.1° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Thaynes Formation, Spathian (251.3 - 247.2 Ma)

• "lower part of the Spathian Stage... conodont Zone 10"

•illustrated specimens are from the 844 meter level, so the sample presumably is from this one bed

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; medium-grained, shelly/skeletal grainstone and burrowed, argillaceous siltstone

• "shallow water, subtidal calcarenites deposited in a moderate energy environment with periodic silty and shaly incursions which allowed the preservation of abundant horizontal burrows"
• "brachiopods... occur in silicified coquinas and as isolated calcareous shells. The host limestones are medium to coarse grained calcarenites with platy, argillaceous to silty interbeds bearing abundant burrows which parallel the bedding surfaces"

Size class: microfossils

Collected in 1975

• specimens are in the University of Alberta collections

Primary reference: D. G. Perry and B. D. E. Chatterton. 1979. Late Early Triassic brachiopod and conodont fauna, Thaynes Formation, southeastern Idaho. Journal of Paleontology 53(2):307-319 [D. Bottjer/C. Powers/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 72297: authorized by John Alroy, entered by John Alroy on 30.05.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Conodonta
 Ozarkodinida - Gondolellidae
"Neospathodus triangularis" = Novispathodus triangularis, "Neospathodus ? homeri" = Triassospathodus homeri, "Neogondolella jubata" = Gondolella jubata, Platyvillosus asperatus
"Neospathodus triangularis" = Novispathodus triangularis Bender 1970 conodont
"Neospathodus ? homeri" = Triassospathodus homeri Bender 1970 conodont
"Neogondolella jubata" = Gondolella jubata Sweet 1970 conodont