Paris Biota, Immigrant Canyon (Triassic of the United States)

Where: Elko County, Nevada (41.3° N, 114.3° W: paleocoordinates 11.9° N, 37.8° W)

• coordinate estimated from map

When: Spathian (251.3 - 247.2 Ma)

• middle-late Spathian (Prohungarites and Neopopanoceras beds)

Environment/lithology: offshore; mudstone and marl

• deeper offshore, mid to outer platform
• studied fossiliferous levels in IC are mainly composed of bivalve and ammonoid mudstones to wackestones and marls.

Size classes: macrofossils, mesofossils

Preservation: adpression

Primary reference: C. P. A. Smith, T. Laville, E. Fara, G. Escarguel, N. Olivier, E. Vennin, N. Goudemand, K. G. Bylund, J. F. Jenks, D. A. Stephen, M. Hautmann, S. Charbonnier, L. J. Krumenacker and A. Brayard. 2021. Exceptional fossil assemblages confirm the existence of complex Early Triassic ecosystems during the early Spathian. Scientific Reports 11(19657) [B. Seuss/B. Seuss/M. Clapham]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 211747: authorized by Barbara Seuss, entered by Barbara Seuss on 27.07.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Crustacea
  -
Crustacea indet. BrĂ¼nnich 1772
few lobsters and shrimps
Malacostraca
 Decapoda -
Glypheoidea indet. Winckler 1882 decapod
shrimp
Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
Rhynchonellata
 Rhynchonellida -
Cephalopoda
 Ammonoidea -
Ammonoidea indet. Zittel 1884 ammonite
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
dominant
Ophiuroidea
  -
Ophiuroidea indet. Gray 1840 brittle star
Reptilia
 Ichthyosauria - Ichthyosauridae
Ichthyosauridae indet. Bonaparte 1841 ichthyosaur
vertebra
Demospongiae
 Protomonaxonida - Leptomitidae
Pseudoleptomitus advenus Botting 2019 demosponge