Y2K Quarry: Tiffanian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
- Multituberculata
|
||||||||||
Multituberculata indet.
Cope 1884
|
||||||||||
Mammalia
- Multituberculata
- Microcosmodontidae
|
||||||||||
Microcosmodon conus
Jepsen 1930
|
Secord 2008 | |||||||||
Mammalia
- Multituberculata
- Neoplagiaulacidae
|
||||||||||
Parectypodus laytoni
(Jepsen 1940)
|
Secord 2008 | |||||||||
original and current combination Ectypodus laytoni | ||||||||||
Ectypodus powelli
Jepsen 1940
|
||||||||||
Mammalia
- Multituberculata
- Ptilodontidae
|
||||||||||
Prochetodon cavus
Jepsen 1940
|
Secord 2008 | |||||||||
Mammalia
- Leptictidae
|
||||||||||
Prodiacodon sp.
Matthew 1929
|
||||||||||
= Prodiacodon cf. tauricinerei
Jepsen 1930
|
Secord 2008 | |||||||||
based on multiple specimens, mainly isolated teeth | ||||||||||
Palaeictops sp.
Matthew 1899
|
||||||||||
= cf. Palaeictops sp.
Matthew 1899
|
Secord 2008 | |||||||||
Based on UM 109256, RP3/ | ||||||||||
Mammalia
- Primates
- Microsyopidae
|
||||||||||
Arctodontomys sp.
Gunnell 1985
|
Secord 2008 | |||||||||
Based on UM 110977, RM2/ | ||||||||||
Mammalia
- Primates
- Micromomyidae
|
||||||||||
Micromomys sp.
Szalay 1973
|
||||||||||
said to be new | ||||||||||
= Micromomys millennius n. sp.
Secord 2008
|
Secord 2008 | |||||||||
recombined as Dryomomys millennius | ||||||||||
Mammalia
- Primates
- Paromomyidae
|
||||||||||
Phenacolemur pagei
Jepsen 1930
|
||||||||||
= Dillerlemur pagei
Jepsen 1930
|
Alroy 2002 | |||||||||
Ignacius sp.
Matthew and Granger 1921
|
||||||||||
= Phenacolemur pagei
Jepsen 1930
|
Secord 2008 | |||||||||
recombined as Dillerlemur pagei | ||||||||||
No published evidence for Ignacius at Y2K Quarry | ||||||||||
Mammalia
- Primates
- Plesiadapidae
|
||||||||||
Plesiadapis fodinatus
Jepsen 1930
|
||||||||||
= Plesiadapis cf. dubius
Matthew 1915
|
Secord 2008 | |||||||||
Mammalia
- Primates
- Carpolestidae
|
||||||||||
Carpolestes dubius
Jepsen 1930
|
||||||||||
Mammalia
- Erinaceidae
|
||||||||||
Litolestes sp.
Jepsen 1930
|
||||||||||
= Litolestes ignotus
Jepsen 1930
|
Secord 2008 | |||||||||
Mammalia
- Nyctitheriidae
|
||||||||||
cf. Leptacodon sp.
Matthew and Granger 1921
|
||||||||||
= Leptacodon packi
Jepsen 1930
|
Secord 2008 | |||||||||
Leptacodon packi
Jepsen 1930
|
Secord 2008 | |||||||||
Plagioctenodon sp.
Bown 1979
|
||||||||||
Mammalia
- Phenacodontidae
|
||||||||||
Ectocion mediotuber
Thewissen 1990
|
Secord 2008 | |||||||||
Mammalia
- Procreodi
- Arctocyonidae
|
||||||||||
Arctocyon cf. nexus
(Gazin 1956)
|
Secord 2008 | |||||||||
Claenodon sp.
Scott 1892
|
||||||||||
Princetonia cf. yalensis
Gingerich 1989
|
Secord 2008 | |||||||||
Mammalia
- Viverravidae
|
||||||||||
Viverravus schaffi
(Gingerich and Winkler 1985)
|
Secord 2008 | |||||||||
Based on UM 109185, LM/1; UM 109327, LM/2; UM 109484, RM/1 | ||||||||||
Mammalia
- Metacheiromyidae
|
||||||||||
Metacheiromyidae indet.
Wortman 1903
|
||||||||||
said to be new (4 measurements) | ||||||||||
= Mylanodon rosei n. gen., n. sp.
Secord et al. 2002
|
Secord et al. 2002 | |||||||||
Mammalia
- Macroscelidea
|
||||||||||
Diacocherus sp.
Gingerich 1983
|
||||||||||
= Adunator minutus
Jepsen 1930
|
Secord 2008 | |||||||||
Mammalia
- Proteutheria
- Palaeoryctidae
|
||||||||||
Palaeoryctes sp.
Matthew 1913
|
||||||||||
said to be new | ||||||||||
= Palaeoryctes jepseni n. sp.
Bloch et al. 2004
|
Bloch et al. 2004 | |||||||||
Mammalia
- Apatemyidae
|
||||||||||
Apatemyidae indet.
Matthew 1909
|
||||||||||
= Labidolemur soricoides
Matthew and Granger 1921
|
Secord 2008 | |||||||||
Based on UM 109192, LI2/; UM 109282, LI1/ | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Wyoming | County: | Park |
Coordinates: | 44.3° North, 109.0° West (view map) | ||||
Paleocoordinates: | 50.2° North, 88.7° West | ||||
Basis of coordinate: | based on political unit | ||||
Geographic resolution: | small collection |
Time
Period: | Paleogene | Epoch: | Paleocene |
10 m.y. bin: | Cenozoic 1 | ||
*Period: | Early/Lower Tertiary | *Epoch: | Late/Upper Paleocene | *Local age/stage: | Late/Upper Tiffanian |
Key time interval: | Tiffanian | ||
Age range of interval: | 61.70000 - 56.80000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Fort Union | ||||
Local section: | Clark | Local bed: | 760 m | ||
Local order: | bottom to top | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: from "a thin (2-12 cm) siltstone layer" between Princeton Quarry (680 m level) and Holly's Microsite (1280 m level) and in the "upper part of the Plesiadapis simonsi Zone," which ranges from below 680 m to about 960 m (see Rose 1981); placed at "80 m stratigraphically above Princeton Quarry" (i.e., 760 m) by Secord et al. 2002 |
Lithology and environment
Primary lithology: | siltstone |
Lithology description: "siltstone" | |
Environment: | terrestrial indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils,mesofossils |
Articulated whole bodies: | none |
Associated major elements: | none |
Disassociated major elements: | some |
Disassociated minor elements: | many |
Collection methods and comments
Collection methods: | bulk,selective quarrying,sieve,field collection |
Collection size: | 363 specimens |
Reason for describing collection: | paleoecologic analysis |
Collection method comments: "98 mammalian jaws and jaw fragments, and 265 isolated teeth" |
Metadata
Database number: | 26569 | ||
Authorizer: | J. Alroy, K. Beard, P. Holroyd | Enterer: | J. Alroy, P. Holroyd, K. Beard |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 2002-10-17 20:15:29 | Last modified: | 2003-01-19 19:46:57 |
Access level: | the public | Released: | 2002-10-17 20:15:29 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
7301. | R. Secord. 2002. The Y2K Quarry, a new diverse latest Tiffanian (late Paleocene) mammalian assemblage from the Fort Union Formation in the northern Bighorn Basin, Wyoming. Journal of Vertebrate Paleontology 22(3):105A [J. Alroy/J. Alroy/J. Alroy] |
Secondary references:
6294 | J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari] | |
63128 | J. I. Bloch, R. Secord, and P. D. Gingerich. 2004. Systematics and phylogeny of late Paleocene and early Eocene Palaeoryctinae (Mammalia, Insectivora) from the Clarks Fork Basin, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 31(5):119-154 [K. Beard/K. Beard] | |
63104 | R. Secord. 2008. The Tiffanian Land-Mammal Age (middle and late Paleocene) in the northern Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 35:1-192 [K. Beard/K. Beard] | |
7666 | R. Secord, P. D. Gingerich, and J. I. Bloch. 2002. Mylanodon rosei, a new metacheiromyid (Mammalia, Palaeanodonta) from the late Tiffanian (late Paleocene) of northwestern Wyoming. Contributions from the Museum of Paleontology, University of Michigan 30(15):385-399 [J. Alroy/J. Alroy/J. Alroy] |