Crittenden Springs, Meekoceras gracilitatis zone sample 6: Smithian, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ceratitida - Arctoceratidae
Arctoceras tuberculatum (Smith 1932)
original and current combination Meekoceras (Koninckites) tuberculatum
Churkites noblei Jenks 2007
Jenks 2007
(8 measurements)
Cephalopoda - Ceratitida - Prionitidae
Hemiprionites roberti n. sp. Jenks et al. 2010
(16 measurements)
Meekoceras gracilitatis White 1879
Cephalopoda - Ceratitida - Dieneroceratidae
Dieneroceras subquadratum (Smith 1932)
Wyomingites aplanatus (White 1879)
Wyomingites arnoldi (Hyatt and Smith 1905)
Wyomingites whiteanus (Waagen 1895)
Cephalopoda - Ceratitida - Proptychitidae
Guodunites cf. monneti Brayard and Bucher 2008
(4 measurements)
Pseudaspidites silberlingi n. sp. Jenks et al. 2010
(5 measurements)
Cephalopoda - Ceratitida - Xenoceltitidae
Subvishnuites stokesi (Kummel and Steele 1962)
Cephalopoda - Ceratitida - Kashmiritidae
Preflorianites toulai (Smith 1932)
Cephalopoda - Ceratitida - Flemingitidae
Euflemingites cirratus (White 1879)
Anaflemingites russelli (Smith 1904)
(1 measurement)
Anaflemingites silberlingi Kummel and Steele 1962
Cephalopoda - Ceratitida - Meekoceratidae
Juvenites septentrionalis Smith 1932
Juvenites thermarum (Smith 1927)
Cephalopoda - Ceratitida - Paranannitidae
Owenites koeneni Hyatt and Smith 1905
Cephalopoda - Ceratitida - Ussuriidae
Parussuria compressa (Hyatt and Smith 1905)
Cephalopoda - Ceratitida - Lanceolitidae
Lanceolites compactus Hyatt and Smith 1905
Cephalopoda - Ceratitida - Aspenitidae
Aspenites acutus Hyatt and Smith 1905
Cephalopoda - Ceratitida - Hedenstroemiidae
Pseudosageceras multilobatum Noetling 1905
see common names

Geography
Country:United States State/province:Nevada
Coordinates: 41.6° North, 114.1° West (view map)
Paleocoordinates:12.1° North, 37.5° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Triassic Epoch:Early/Lower Triassic
Stage:Olenekian 10 m.y. bin:Triassic 1
Key time interval:Smithian Ammonoid zone: Meekoceras gracilitatis
Age range of interval:251.20000 - 248.90000 m.y. ago
Stratigraphy
Formation:Thaynes
Local section:Meekoceras bed Local bed:6
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Sample from 8 cm thick gray limestone
Lithology and environment
Primary lithology:gray lithified "limestone"
Environment:open shallow subtidal
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:97121
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2010-07-18 09:54:23 Last modified:2013-11-25 13:02:06
Access level:the public Released:2010-07-18 09:54:23
Creative Commons license:CC BY
Reference information

Primary reference:
33144. 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]

Secondary references:

31756 J. F. Jenks. 2007. Smithian (Early Triassic) ammonoid biostratigraphy at Crittenden Springs, Elko County, Nevada and a new ammonoid from the Meekoceras gracilitatis zone. New Mexico Museum of Natural History and Science Bulletin 40:81-90 [M. Clapham/M. Clapham]