West Fork of Gallegos Canyon: Puercan, New Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Condylarthra
Desmatoclaenus sp. Gazin 1941
(1 measurement)
    = Desmatoclaenus dianae Van Valen 1978
Williamson and Lucas 1993
replaces ID of Lucas 1984 in part
Desmatoclaenus sp. Gazin 1941
    = Desmatoclaenus protogonioides Cope 1882
Williamson and Lucas 1993
replaces ID of Lucas 1984 in part
Mammalia - Periptychidae
Periptychus coarctatus Cope 1883
Gillisonchus gillianus (Cope 1882)
    = Mithrandir gillianus Cope 1882
Alroy 2002
Mammalia - Procreodi - Arctocyonidae
Loxolophus priscus (Cope 1888)
(1 measurement)
Loxolophus pentacus (Cope 1888)
(1 measurement)
Loxolophus hyattianus (Cope 1885)
Mammalia - Multituberculata - Taeniolabididae
Taeniolabis taoensis (Cope 1882)
includes AMNH "Polymastodon" specimens of Sinclair and Granger 1914
see common names

Geography
Country:United States State/province:New Mexico County:San Juan
Coordinates: 36.3° North, 108.2° West (view map)
Paleocoordinates:43.2° North, 87.3° West
Basis of coordinate:based on political unit
Time
Period:Paleogene Epoch:Paleocene
Stage:Danian 10 m.y. bin:Cenozoic 1
*Period:Tertiary
Key time interval:Puercan
Age range of interval:66.00000 - 63.30000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Nacimiento
Lithology and environment
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Museum repositories:LACM
Taxonomic list comments:identical to list 6 of Williamson 1996
several records are omitted by Williamson and Lucas 1993
it appears that there are also Torrejonian strata in Gallegos Canyon ("Chico Springs"), represented in AMNH collections; some i.d.s separated out as a second list (see)
multiple localities from a single 1 m thick black sandstone; virtually every specimen is from a different UNM locality
section is entirely reversed, hard to correlate to paleomag time scale as base should encompass 29N; possibility that the entire section represents 29R is not discussed
Metadata
Also known as:Sinclair and Granger Loc. 4; Five miles northwest of Ojo Alamo; LACM 5400; Pina Verta Canyon
Database number:14795
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2006-09-13 00:27:33
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

831. S. G. Lucas. 1984. Early Paleocene vertebrates, stratigraphy and biostratigraphy, West Fork of Gallegos Canyon, San Juan Basin, New Mexico. New Mexico Geology 6(3):56-60 [J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
3649 T. E. Williamson and S. G. Lucas. 1993. Paleocene vertebrate paleontology of the San Juan Basin, New Mexico. New Mexico Museum of Natural History Bulletin 2:105-136 [J. Alroy/J. Alroy/M. Uhen]