PBDB Collection

Crittenden Springs, Meekoceras gracilitatis zone sample 3 (Triassic of the United States)

Where: Nevada (41.6° N, 114.1° W: paleocoordinates 12.1° N, 37.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Meekoceras gracilitatis ammonoid zone, Thaynes Formation, Smithian (251.3 - 247.2 Ma)

• Sample from 15 cm thick gray to brownish-yellow limestone

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, gray limestone

Size class: macrofossils

Primary reference: J. F. Jenks, A. Brayard, T. Brühwiler and H. Bucher. 2010. New Smithian (Early Triassic) ammonoids from Crittenden Springs, Elko County, Nevada: implications for taxonomy, biostratigraphy and biogeography. New Mexico Museum of Natural History and Science Bulletin 48:1-41 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 97118: authorized by Matthew Clapham, entered by Matthew Clapham on 18.07.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Cephalopoda
Ceratitida - Hedenstroemiidae	Pseudosageceras multilobatum, Cordillerites cf. angulatus Pseudosageceras multilobatum Noetling 1905 ceratite Cordillerites cf. angulatus Hyatt and Smith 1905 ceratite
Ceratitida - Aspenitidae	Aspenites cf. acutus Aspenites cf. acutus Hyatt and Smith 1905 ceratite
Ceratitida - Flemingitidae	Euflemingites cirratus, Anaflemingites silberlingi Euflemingites cirratus White 1879 ceratite Anaflemingites silberlingi Kummel and Steele 1962 ceratite
Ceratitida - Lanceolitidae	Lanceolites compactus Lanceolites compactus Hyatt and Smith 1905 ceratite
Ceratitida - Paranannitidae	Owenites koeneni Owenites koeneni Hyatt and Smith 1905 ceratite
Ceratitida - Ussuriidae	Parussuria compressa Parussuria compressa Hyatt and Smith 1905 ceratite
Ceratitida - Meekoceratidae	? Juvenites sp., Juvenites septentrionalis, Juvenites thermarum ? Juvenites sp. Smith 1927 ceratite Juvenites septentrionalis Smith 1932 ceratite Juvenites thermarum Smith 1927 ceratite
Ceratitida - Prionitidae	Meekoceras gracilitatis Meekoceras gracilitatis White 1879 ceratite
Ceratitida - Dieneroceratidae	"Dieneroceras knechti" = Dieneroceras dieneri, Dieneroceras spathi "Dieneroceras knechti" = Dieneroceras dieneri Hyatt and Smith 1905 ceratite Dieneroceras spathi Kummel and Steele 1962 ceratite
Ceratitida - Melagathiceratidae	Paranannites slossi, Paranannites aspenensis, Paranannites mulleri Paranannites slossi Kummel and Steele 1962 ceratite Paranannites aspenensis Hyatt and Smith 1905 ceratite Paranannites mulleri Kummel and Steele 1962 ceratite
Ceratitida - Arctoceratidae	Arctoceras tuberculatum Arctoceras tuberculatum Smith 1932 ceratite
Phylloceratida - Galfettitidae	Galfettites lucasi n. sp. Galfettites lucasi n. sp. Jenks et al. 2010 ammonite