Paris Canyon, Bear Lake County (Triassic of the United States)

Where: Idaho (42.2° N, 111.4° W: paleocoordinates 11.7° N, 35.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• "below the typical Meekoceras beds of the Aspen Range"

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Collected by John C. Merriam in 1903; reposited in the UCMP

Primary reference: H. M. Evans. 1904. A new cestraciont spine from the Lower Triassic of Idaho. University of California Publications, Bulletin of the Department of Geology 3(18):397-402 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136684: authorized by Matthew Clapham, entered by Matthew Clapham on 02.12.2012, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

Ophiuroidea
 Ophiurida - Ophiuridae
Aspidura idahoensis n. sp. Clark and Twitchell 1915 brittle star
Crinoidea
 Holocrinida - Holocrinidae
"Isocrinus smithi n. sp." = Holocrinus smithi
"Isocrinus smithi n. sp." = Holocrinus smithi Clark and Twitchell 1915 Sea lily
Chondrichthyes
 Synechodontiformes - Palaeospinacidae
"Cosmacanthus elegans n. sp." = Nemacanthus elegans
"Cosmacanthus elegans n. sp." = Nemacanthus elegans Evans 1904 elasmobranch