Union Wash, Meekoceras bed, Inyo Range (Triassic of the United States)

Where: Inyo County, California (36.7° N, 118.0° W: paleocoordinates 7.6° N, 44.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Union Wash Formation, Smithian (251.3 - 247.2 Ma)

• In geologic horizon the beds at this locality are equivalent to the upper part of the Pseudosageceras multilobatum subzone and the overlying Owenites subzone of southeastern Idaho, the two not being separated lithologically at this place.

• group of beds-level stratigraphic resolution

Environment/lithology: slope; lithified, gray limestone

Size class: macrofossils

Preservation: cast, mold/impression

Collected by J.P. Smith; reposited in the USNM

Primary reference: A. Hyatt and J. P. Smith. 1905. The Triassic cephalopod genera of America. United States Geological Survey Professional Paper 40:1-394 [D. Bottjer/C. Powers/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 33298: authorized by David Bottjer, entered by Catherine Powers on 24.07.2003, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Kashmiritidae
"Xenodiscus toulai" = Preflorianites toulai3, "Proteusites rotundus" = Preflorianites toulai3, "Danubites strongi n. sp." = Preflorianites strongi
"Xenodiscus toulai" = Preflorianites toulai3 Smith 1932 ceratite
"Proteusites rotundus" = Preflorianites toulai3 Smith 1932 ceratite
"Danubites strongi n. sp." = Preflorianites strongi Hyatt and Smith 1905 ceratite
 Ceratitida -
"? Meekoceras (Prionolobus) jacksoni" = Jeanbesseiceras jacksoni
"? Meekoceras (Prionolobus) jacksoni" = Jeanbesseiceras jacksoni Hyatt and Smith 1905 ceratite
 Ceratitida - Dieneroceratidae
"Meekoceras (Gyronites) aplanatum" = Wyomingites aplanatus, "Ophiceras subquadratum" = Dieneroceras subquadratum3, "Ophiceras parvum" = Dieneroceras subquadratum3, "Xenaspis marcoui n. sp." = Dieneroceras marcoui, Dieneroceras spathi2, "Lecanites knechti n. sp." = Dieneroceras dieneri
"Meekoceras (Gyronites) aplanatum" = Wyomingites aplanatus White 1879 ceratite
"Ophiceras subquadratum" = Dieneroceras subquadratum3 Smith 1932 ceratite
"Ophiceras parvum" = Dieneroceras subquadratum3 Smith 1932 ceratite
"Xenaspis marcoui n. sp." = Dieneroceras marcoui Hyatt and Smith 1905 ceratite
Dieneroceras spathi2 Kummel and Steele 1962 ceratite
"Lecanites knechti n. sp." = Dieneroceras dieneri Hyatt and Smith 1905 ceratite
 Ceratitida - Arctoceratidae
"Meekoceras tuberculatum" = Arctoceras tuberculatum3, "Meekoceras (Koninckites) mushbachanum" = Submeekoceras mushbachanum
"Meekoceras tuberculatum" = Arctoceras tuberculatum3 Smith 1932 ceratite
"Meekoceras (Koninckites) mushbachanum" = Submeekoceras mushbachanum White 1879 ceratite
 Ceratitida - Ophiceratidae
 Ceratitida - Prionitidae
Meekoceras newberryi3, Meekoceras strongi3, "Meekoceras gracilitatis" = Meekoceras gracilitatis, "Clypeoceras pusillum" = Meekoceras gracilitatis3, "Meekoceras arthaberi" = Meekoceras gracilitatis3, Anasibirites desertorum3, Anasibirites lindgreni3, "Sibirites noetlingi n. sp." = Anasibirites kingianus
"Meekoceras gracilitatis" = Meekoceras gracilitatis White 1879 ceratite
"Clypeoceras pusillum" = Meekoceras gracilitatis3 White 1879 ceratite
"Meekoceras arthaberi" = Meekoceras gracilitatis3 White 1879 ceratite
"Sibirites noetlingi n. sp." = Anasibirites kingianus Waagen 1895 ceratite
 Ceratitida - Ussuriidae
"Ussuria compressa n. sp." = Parussuria compressa
"Ussuria compressa n. sp." = Parussuria compressa Hyatt and Smith 1905 ceratite
 Ceratitida - Paranoritidae
"Meekoceras radiosum" = Radioceras evolvens3
"Meekoceras radiosum" = Radioceras evolvens3 Waagen 1895 ceratite
 Ceratitida - Proptychitidae
Meekoceras (Prionolobus) waageni n. sp., "Proptychites walcotti n. sp." = Discoproptychites walcotti, "Aspidites hooveri n. sp." = Guodunites hooveri
Meekoceras (Prionolobus) waageni n. sp. Hyatt and Smith 1905 ceratite
coll. A.M. Strong
"Proptychites walcotti n. sp." = Discoproptychites walcotti Hyatt and Smith 1905 ceratite
"Aspidites hooveri n. sp." = Guodunites hooveri Hyatt and Smith 1905 ceratite
 Ceratitida - Melagathiceratidae
"Prosphingites austini n. sp." = Prosphingitoides austini, "Nannites dieneri n. sp." = Juvenites dieneri, Owenites carpenteri3, "Owenites koeneni n. sp." = Owenites koeneni3, "Owenites koeneni" = Owenites koeneni1, "Owenites zitteli" = Owenites koeneni3
"Prosphingites austini n. sp." = Prosphingitoides austini Hyatt and Smith 1905 ceratite
"Nannites dieneri n. sp." = Juvenites dieneri Hyatt and Smith 1905 ceratite
Owenites carpenteri3 Smith 1932 ceratite
"Owenites koeneni n. sp." = Owenites koeneni3 Hyatt and Smith 1905 ceratite
"Owenites koeneni" = Owenites koeneni1 Hyatt and Smith 1905 ceratite
"Owenites zitteli" = Owenites koeneni3 Hyatt and Smith 1905 ceratite
 Ceratitida - Hedenstroemiidae
Hedenstroemia kossmati3, "Pseudosageceras intermontanum" = Pseudosageceras multilobatum
Hedenstroemia kossmati3 Hyatt and Smith 1905 ceratite
"Pseudosageceras intermontanum" = Pseudosageceras multilobatum Noetling 1905 ceratite
 Ceratitida - Aspenitidae
Aspenites acutus n. gen. Hyatt and Smith 1905 ceratite
 Ceratitida - Sturiidae
Sturia woodini3 ceratite
 Ceratitida - Inyoitidae
Inyoites oweni n. gen. n. sp.
Inyoites oweni n. gen. n. sp. Hyatt and Smith 1905 ceratite
coll. C.D. Walcott
 Ceratitida - Lanceolitidae
Lanceolites bicarinatus3 Smith 1932 ceratite
Lanceolites compactus n. gen. Hyatt and Smith 1905 ceratite