Big Pocket: Torrejonian, New Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia - Multituberculata - Neoplagiaulacidae
Ectypodus sp. Matthew and Granger 1921
Taylor 1981
    = Parectypodus clemensi n. sp. Sloan 1981
Sloan 1981
recombined as Krauseia clemensi
in part
Mimetodon trovessartianus (Cope 1882)
    = Parectypodus trovessartianus Cope 1882
Alroy 2002
? Ectypodus sp. Matthew and Granger 1921
    = Ectypodus szalayi Sloan 1981
Sloan 1981
in part
Mammalia - Multituberculata - Cimolodontidae
Anconodon gidleyi (Simpson 1935)
Sloan 1981
Mammalia - Leptictidae
Acmeodon cf. secans Matthew and Granger 1921
described by Wilson 1985
Mammalia
Conoryctinae indet.
    = Conoryctella pattersoni Schoch and Lucas 1981
Schoch and Lucas 1981
Psittacotherium multifragum Cope 1882
Mammalia - Condylarthra - Hyopsodontidae
Mioclaenus sp. Cope 1881
Taylor 1981
said to be new
Mioclaenus turgidus Cope 1881
Ellipsodon sp. Scott 1892
    = Ellipsodon grangeri n. sp. Wilson 1956
Wilson 1956
Ellipsodon yotankae Van Valen 1978
Williamson and Carr 2007
NMMNH P-30646
Protoselene opisthacus (Cope 1882)
Promioclaenus ? lemuroides (Matthew 1897)
Promioclaenus acolytus (Cope 1882)
Mammalia - Acreodi - Oxyclaenidae
Coriphagus encinensis (Matthew and Granger 1921)
Deltatherium fundaminis Cope 1881
Mammalia - Acreodi - Triisodontidae
Goniacodon levisanus (Cope 1883)
Triisodon sp. Cope 1881
Mammalia - Viverravidae
Bryanictis paulus n. sp. Meehan and Wilson 2002
Meehan and Wilson 2002
(1 measurement)
Didymictis informal sp. b Cope 1875
"n. sp. b" (2 measurements)
    = Protictis minor n. sp. Meehan and Wilson 2002
Meehan and Wilson 2002
Didymictis informal sp. a Cope 1875
"n. sp. a" (2 measurements)
    = Protictis simpsoni n. sp. Meehan and Wilson 2002
Meehan and Wilson 2002
Mammalia - Phenacodontidae
Tetraclaenodon puercensis (Cope 1881)
NMMNH P-20949 (nearly complete skeleton) (6 measurements)
Mammalia - Procreodi - Arctocyonidae
Chriacus truncatus Cope 1884
    = Chriacus pelvidens Cope 1881
Taylor 1981
Chriacus pelvidens (Cope 1881)
Tricentes subtrigonus (Cope 1881)
    = Mimotricentes subtrigonus Cope 1881
Taylor 1981
recombined as Tricentes subtrigonus
Mammalia - Periptychidae
Periptychus carinidens Cope 1881
Anisonchus sectorius (Cope 1881)
Mammalia
? Prodiacodon sp. Matthew 1929
    = Prodiacodon puercensis Matthew 1918
Williamson and Lucas 1993
original and current combination Diacodon puercensis
said to be new
Mammalia - Pantolestidae
Pentacodon sp. Scott 1892
said to be new
Mammalia - Mixodectidae
Mixodectes malaris (Cope 1884)
Mammalia - Primates - Palaechthonidae
? Palaechthon sp. Gidley 1923
    = Plesiolestes nacimienti n. sp. Wilson and Szalay 1972
Gunnell 1989
Mammalia - Primates
Palaechthon torrejonius (Kay and Cartmill 1977)
Van Valen 1994
included in Plesiolestes nacimienti by Gunnell 1989
Palaechthon cf. woodi Gazin 1971
Williamson and Lucas 1993
NMMNH 2635
Mammalia - Proteutheria - Palaeoryctidae
Palaeoryctes cf. puercensis Matthew 1913
confirmed by Williamson and Lucas 1993
see common names

Geography
Country:United States State/province:New Mexico County:San Juan
Coordinates: 36.6° North, 108.0° West (view map)
Paleocoordinates:43.1° North, 87.9° West
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period:Paleogene Epoch:Paleocene
10 m.y. bin:Cenozoic 1
*Period:Early/Lower Tertiary *Epoch:Early/Lower Paleocene
*Local age/stage:Torrejonian
Key time interval:Torrejonian
Age range of interval:63.80000 - 60.90000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Nacimiento
Local section:KutzC Local bed:9
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: from "a zone... three to four feet in thickness... The actual bone layer, not as yet located, may prove to be thinner than this" (Wilson 1951)
not far below the middle of a reversed magnetic polarity zone in the Kutz Canyon section interpreted as C27r based on the position of the K-T boundary in the correlative Barrel Spring Arroyo = De-na-zin Wash section: see Butler et al. 1977, Lucas et al. 1997
Lithology and environment
Primary lithology:concretionary,red siltstone
Lithology description: "reddish silt" (Wilson 1951)
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body,concretion
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (float),field collection
Collection size:312 specimens
Reason for describing collection:taxonomic analysis
Taxonomic list comments:UALP localities are at exactly the same level as KUVP 13 but may be at some distance
following taxa listed by Williamson and Lucas may be from Big Pocket or a stratigraphically nearby locality: ? Peradectes sp. "D" Pentacodon inversus Protictis haydenianus "Protictis" sp. "A" Protictis (Protictis) sp. "B" Triisodon quivirensis Ellipsodon inaequidens
Metadata
Also known as:Angels Peak; KUVP Loc. 13; Locality NM 13; NMMNH 2635; UALP 7435, 7436, 75144; NMMNH locality L-2635
Database number:14816
Authorizer:J. Alroy, P. Mannion Enterer:J. Alroy, P. Mannion
Modifier:P. Mannion Research group:vertebrate
Created:1993-09-27 00:00:00 Last modified:2018-06-08 11:37:05
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:
3700. R. W. Wilson. 1956. A new multituberculate from the Paleocene Torrejon fauna of New Mexico. Transactions of the Kansas Academy of Sciences 59(1):76-84 [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]
1730 G. F. Gunnell. 1989. Evolutionary History of Microsyopoidea (Mammalia, ?Primates) and the Relationship Between Plesiadapiformes and Primates. University of Michigan Papers on Paleontology 27:1-157 [J. Alroy/J. Alroy/P. Mannion]
45973 P. E. Kondrashov and S. G. Lucas. 2012. Nearly Complete Skeleton of Tetraclaenodon (Mammalia, Phenacodontidae) from the Early Paleocene of New Mexico: Morpho-Functional Analysis. Journal of Paleontology 86(1):25-43 [P. Mannion/P. Mannion]
2319 S. G. Lucas, T. E. Williamson, and M. D. Middleton. 1997. Catopsalis (Mammalia: Multituberculata) from the Paleocene of New Mexico and Utah: taxonomy and biochronological significance. Journal of Paleontology 71(3):484-492. [J. Alroy/J. Alroy/K. Maguire]
7533 T. J. Meehan and R. W. Wilson. 2002. New viverravids from the Torrejonian (Middle Paleocene) of Kutz Canyon, New Mexico and the oldest skull of the order Carnivora. Journal of Paleontology 76(6):1091-1101 [J. Alroy/J. Alroy/J. Alroy]
3058 R. M. Schoch and S. G. Lucas. 1981. A new species of Conoryctella (Mammalia: Taeniodonta) from the Paleocene of the San Juan Basin, New Mexico, and a revision of the genus. Postilla 185:1-23 [J. Alroy/J. Alroy/J. Ju]
3195 R. E. Sloan. 1981. Systematics of Paleocene multituberculates from the San Juan Basin, NewMexico. In S. G. Lucas, J. K. Rigby Jr., B. S. Kues (eds.), Advances in San Juan Basin Paleontology 127-160 [J. Alroy/J. Alroy/M. Uhen]
3375 L. H. Taylor. 1981. The Kutz Canyon Local Fauna, Torrejonian (Middle Paleocene) of the San Juan Basin, New Mexico;. In S. G. Lucas, J. K. Rigby Jr., B. S. Kues (eds.), Advances in San Juan Basin Paleontology 242-263 [J. Alroy/J. Alroy/M. Uhen]
3469 C. Tsentas. 1981. Mammalian biostratigraphy of the middle Paleocene (Torrejonian) strata of the San Juan Basin: notes on Torreon Wash and the status of the Pantolambda and Deltatherium faunal "zones" Deltatherium faunal "zones". In S. G. Lucas, J. K. Rigby Jr., B. S. Kues (eds.), Advances in San Juan Basin Paleontology 264-292 [J. Alroy/J. Alroy/M. Uhen]
3488 L. M. Van Valen. 1994. The origin of the plesiadapid primates and the nature of Purgatorius. Evolutionary Monographs 15:1-79 [J. Alroy/J. Alroy/P. Mannion]
42804 T. Williamson and T. Carr. 2007. Bomburia and Ellipsodon (Mammalia: Mioclaenidae) from the Early Paleocene of New Mexico. Journal of Paleontology 81:966-985 [T. Williamson/T. Williamson/P. Mannion]
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]
3701 R. W. Wilson. 1956. The condylarth genus Ellipsodon. University of Kansas Publications, Museum of Natural History 9(5):105-116 [J. Alroy/J. Alroy/J. Alroy]
3702 R. W. Wilson. 1956. Additional remains of the multituberculate genus Eucosmodon. University of Kansas Publications, Museum of Natural History 9(6):117-123 [J. Alroy/J. Alroy/J. Alroy]