Tutcheria Association - Nevada (Triassic of the United States)

Where: Nevada (38.0° N, 118.0° W: paleocoordinates 16.8° N, 55.2° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Middle Member (Gabbs Formation), Sevatian (212.0 - 205.6 Ma)

• Late Norian; lower half of the middle member

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, shelly/skeletal packstone

• allochthonous terrane; inner shelf environment
• bioclastic calcarenite packstones

Size class: macrofossils

Collection methods: bulk, mechanical,

Primary reference: R. A. Laws. 1982. Late triassic depositional environments and molluscan associations from west-central Nevada. Palaeogeography, Palaeoclimatology, Palaeoecology 37(2-4):131-148 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 37246: authorized by Martin Aberhan, entered by Sabine Nürnberg on 09.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Pectinida - Pectinoidae
Chlamys sp. Röding 1798 scallop
 Pectinida -
"Pectinacea "sp. 1"" = Pectinoidea, "Pectinacea "sp. 2"" = Pectinoidea
"Pectinacea "sp. 1"" = Pectinoidea Rafinesque 1815 scallop
sp. 1
"Pectinacea "sp. 2"" = Pectinoidea Rafinesque 1815 scallop
sp. 2
 Pectinida - Limidae
 Pectinida - Plicatulidae
 Ostreida - Cassianellidae
 Carditida - Carditidae
Tutcheria sp. Cox 1946 clam
 Cardiida - Kalenteridae
"Permophoridae indet." = Kalenteridae
"Permophoridae indet." = Kalenteridae Marwick 1953 clam
 Cardiida - Cardiidae
Septocardia sp. Hall 1877 cockle
 Lucinida - Lucinidae
Schafhaeutlia sp. Cossmann 1897 clam
 Heterodonta -
Heterodonta indet. Neumayr 1884 clam
 Trigoniida - Myophoriidae
Myophoria sp. Bronn 1834 clam
 Trigoniida - Trigonodidae
Unionites sp. Wissman 1841 clam
 Protobranchia - Malletiidae
Malletiidae "sp. 1" Adams and Adams 1858 clam
sp. 1
Cephalopoda
 Ceratitida - Choristoceratidae
Choristoceras "sp. 1" Hauer 1865 ceratite
sp. 1
 Ceratitida - Cycloceltitidae
 Ceratitida - Arcestidae
Arcestes sp. Suess 1865 ceratite
Arcestes gigantogaleatus von Mojsisovics 1875 ceratite
Arcestes oligosarcus von Mojsisovics 1875 ceratite
 Ceratitida - Gymnitidae
"Placites symmetricus" = Paragymnites symmetricus
"Placites symmetricus" = Paragymnites symmetricus von Mojsisovics 1873 ceratite
 Phylloceratida - Discophyllitidae
Rhacophyllites debilis Hauer 1846 ammonite
 Nautilida - Tainoceratidae
Pleuronautilus sp. Mojsisovics 1882 nautiloid
Rhynchonellata
 Terebratulida -