School Well: Torrejonian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Multituberculata - Ptilodontidae
2 specimens
Mammalia - Condylarthra - Hyopsodontidae
2 specimens
Alroy 2002
Mammalia - Primates - Paromomyidae
Paromomys maturus Gidley 1923
2 specimens
(1 measurement)
Mammalia - Periptychidae
1 specimen
see common names

Geography
Country:United States State/province:Montana County:Dawson
Coordinates: 47.1° North, 104.8° West (view map)
Paleocoordinates:55.9° North, 67.1° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:small collection
Time
Period: Paleogene Epoch: Paleocene
10 m.y. bin: Cenozoic 1
*Period:Tertiary
Key time interval: Torrejonian
Age range of interval: 63.8 - 60.9 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Fort Union Member:upper Ludlow
Local section:Makos Local bed:95
Local order:bottom to top
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection size:7 specimens
Taxonomic list comments:entirely from one locality
"60 m above the Cretaceous-Tertiary boundary"
NISP 7
Metadata
Also known as:JHH L6427
Database number:14885
Authorizer:J. Alroy Enterer:J. Alroy
Research group:vertebrate
Created:1996-08-05 00:00:00 Last modified:2025-02-22 15:12:02
Access level:the public Released:1996-08-05 00:00:00
Creative Commons license:CC0
Reference information

Primary reference:
1985. J. P. Hunter. 1997. Mammals and mollusks across the Cretaceous-Tertiary boundary from Makoshika State Park and vicinity (Williston Basin), Montana. Contributions to Geology, University of Wyoming 32(1):61-114 [J. Alroy/J. Alroy/M. Uhen]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]