ammonites
BYU Locality #712, Uintah Basin, Green River Formation, Utah (Eocene of the United States)

Where: Uintah Basin County, Utah (40.5° N, 110.0° W: paleocoordinates 45.4° N, 94.4° W)

• coordinate estimated from map

When: Green River Formation, Early/Lower Eocene (55.8 - 48.6 Ma)

• Early Eocene

Environment/lithology: lacustrine

• "fine-grained sediments typically deposited in low energy lacustrine environments"

Size class: macrofossils

Preservation: trace

Collection methods: 4 tracks are reported: Holotype BYU B20 and Paratypes: BYU-ACC 87.4.17, SMM P66.6.1 and SMM P66.6.10

Primary reference: S.-Y. Yang, M.G. Lockley, R. Greben, B.R. Erickson, and S.-K. Lim. 1995. Flamingo and duck-like bird tracks from the Late Cretaceous and Early Tertiary: evidence and implications. Ichnos 4:21-34 [J. Alroy/S. Kuemmell] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 60584: authorized by John Alroy, entered by Susanna Kümmell on 18.05.2006

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)

BYU Locality #712, Uintah Basin, Green River Formation, Utah: Early/Lower Eocene, Utah

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Presbyorniformipes
Presbyorniformipes feduccii n. sp. Yang et al. 1995
it was mentioned, but not named by: Curry (1957), Erickson (1967), Feduccia (1980) and Greben & Lockley (1992), who gave the informal name "Morphotype D"
see common names

Geography
Country:United States State/province:Utah County:Uintah Basin
Coordinates: 40.5° North, 110.0° West (view map)
Paleocoordinates:45.4° North, 94.4° West
Basis of coordinate:estimated from map
Time
Period:Paleogene Epoch:Eocene
Stage:Ypresian 10 m.y. bin:Cenozoic 2
Key time interval:Early/Lower Eocene
Age range of interval:55.8 - 48.6 m.y. ago
Stratigraphy
Formation:Green River
Stratigraphy comments: Early Eocene
Lithology and environment
Lithology description: "fine-grained sediments typically deposited in low energy lacustrine environments"
Environment:lacustrine indet.
Taphonomy
Modes of preservation:trace
Size of fossils:macrofossils
Preservation of anatomical detail:good
Abundance in sediment:rare
Temporal resolution:snapshot
Spatial resolution:autochthonous
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:taxonomic analysis
Collection method comments: 4 tracks are reported: Holotype BYU B20 and Paratypes: BYU-ACC 87.4.17, SMM P66.6.1 and SMM P66.6.10
Taxonomic list comments: Feduccia (1978, 1980) attributed the tracks of the holotype to the Eocene shorebird Presbyornis.
Metadata
Database number:60584
Authorizer:J. Alroy Enterer:S. Kuemmell
Modifier:J. Alroy Research group:vertebrate
Created:2006-05-18 02:16:38 Last modified:2007-04-13 06:52:46
Access level:the public Released:2006-05-18 02:16:38
Creative Commons license:CC BY-NC-ND
Reference information
Primary reference:
174135% 14400S.-Y. Yang, M.G. Lockley, R. Greben, B.R. Erickson, and S.-K. Lim. 1995. Flamingo and duck-like bird tracks from the Late Cretaceous and Early Tertiary: evidence and implications. Ichnos 4:21-34 [J. Alroy/S. Kuemmell]