Ophiuroidea, Lower Triassic, Paris Canyon, Idaho, USA (Triassic of the United States)

Where: Bear county County, Idaho (42.2° N, 111.5° W: paleocoordinates 12.0° N, 35.2° W)

• coordinate estimated from map

When: Early/Lower Triassic (252.2 - 247.2 Ma)

Environment/lithology: deep subtidal; lithified limestone

Size class: macrofossils

Preservation: replaced with calcite

Collection methods: bulk,

Primary reference: W. B. Clark and M. W. Twitchell. 1915. The Mesozoic and Cenozoic Echinodermata of the United States. United States Geological Survey Bulletin 54:1-341 [L. Villier/J. Millet/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 58632: authorized by Loic Villier, entered by Julien Millet on 17.02.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Diameter of disk 5 to 7 millimeters, length of arms 10 to 25 millimeters
Ophiuroidea
 Ophiurida - Ophiuridae
? Aspidura idahoensis n. sp. Clark and Twitchell 1915 brittle star