Saddle (Paleocene of the United States)

Also known as Discovery

Where: Fremont County, Wyoming (42.3° N, 108.2° W: paleocoordinates 48.1° N, 88.5° W)

• coordinate stated in text

When: Tiffanian (61.7 - 56.8 Ma)

Environment/lithology: terrestrial

Collection methods: bulk, sieve

• new material of West 1972 part of an "intensively screen-washed" collection made in 1969 by F. S. Szalay

Primary reference: C. L. Gazin. 1956. Palaeocene mammalian faunas of the Bison Basin in south-central Wyoming. Smithsonian Miscellaneous Collections 131(6):1-57 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14989: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Matthew Carrano and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• part of "Bison Basin" list of Russell 1967a

•see Gingerich 1976 for discussion of stratigraphy

Mammalia
 Multituberculata - Ptilodontidae
Ptilodus sp.4 Cope 1881 multituberculate
"P. sp. C"; presumably includes "cf. P. montanus"
Ptilodus gnomus6 Scott et al. 2002 multituberculate
 Multituberculata - Cimolodontidae
Anconodon cochranensis7 Russell 1929 multituberculate
 Multituberculata - Neoplagiaulacidae
Mesodma pygmaea7 Sloan 1987 multituberculate
cf. Ectypodus musculus Matthew and Granger 1921 multituberculate
 Cimolesta - Apatemyidae
Labidolemur major n. sp.11 West 1972 eutherian
DUPLICATE REF 3593 or 3594
 Cimolesta - Pentacodontidae
Bisonalveus browni n. gen. n. sp.
Bisonalveus browni n. gen. n. sp. Gazin 1956 eutherian
USNM 20928-20930
 Cimolesta - Pantolambdidae
Caenolambda pattersoni n. gen. n. sp.
Caenolambda pattersoni n. gen. n. sp. Gazin 1956 pantodont
 Proteutheria - Palaeoryctidae
Pararyctes pattersoni n. sp.9 Van Valen 1966 eutherian
 Condylarthra -
Desmatoclaenus mearae10 Van Valen 1978 placental
 Condylarthra - Hyopsodontidae
? Protoselene novissimus n. sp., "Mioclaenidae indet." = Hyopsodontidae1, Promioclaenus pipiringosi n. sp.
? Protoselene novissimus n. sp. Gazin 1956 condylarth
"Mioclaenidae indet." = Hyopsodontidae1 Trouessart 1879 condylarth
Promioclaenus pipiringosi n. sp. Gazin 1956 condylarth
 Macroscelidea -
cf. Litocherus lacunatus1 Gazin 1956 elephant shrew
 Macroscelidea - Apheliscidae
Litomylus scaphicus n. sp., "Litomylus scaphiscus" = Litomylus dissentaneus, Haplaletes pelicatus n. sp.
Litomylus scaphicus n. sp. Gazin 1956 elephant shrew
"Litomylus scaphiscus" = Litomylus dissentaneus Simpson 1935 elephant shrew
Haplaletes pelicatus n. sp. Gazin 1956 elephant shrew
 Primates - Palaechthonidae
"Plesiolestes sirokyi n. sp." = Torrejonia sirokyi8
"Plesiolestes sirokyi n. sp." = Torrejonia sirokyi8 Szalay 1973 primate
 Primates - Picrodontidae
Picrodus canpacius5 Scott and Fox 2005 primate
 Primates - Plesiadapidae
"Plesiadapis jepseni" = Plesiadapis anceps, Nannodectes gazini n. sp.3
"Plesiadapis jepseni" = Plesiadapis anceps Simpson 1936 primate
NOT the type
Nannodectes gazini n. sp.3 Gingerich 1975 primate
includes "Pronothodectes cf. matthewi" and "P. cf. simpsoni"
 Tribosphenida - Phenacodontidae
Ectocion cf. collinus1 Russell 1929 condylarth
? Phenacodus bisonensis n. sp. Gazin 1956 condylarth
 Procreodi - Arctocyonidae
Colpoclaenus cf. procyonoides1, Chriacus sp., Chriacus pelvidens, "Thryptacodon orthogonius" = Thryptacodon orthogonius6, "Thryptacodon belli n. sp." = Thryptacodon orthogonius, Arctocyon cf. ferox1, "Arctocyon cf. montanensis" = Arctocyon corrugatus1, "Claenodon acrogenius n. sp." = Arctocyon acrogenius, "Tricentes fremontensis n. sp." = Mimotricentes fremontensis
Colpoclaenus cf. procyonoides1 Matthew 1937 condylarth
Chriacus sp. Cope 1883 condylarth
small
Chriacus pelvidens Cope 1881 condylarth
"Thryptacodon orthogonius" = Thryptacodon orthogonius6 Russell 1929 condylarth
"Thryptacodon belli n. sp." = Thryptacodon orthogonius Russell 1929 condylarth
Arctocyon cf. ferox1 Cope 1883 condylarth
"Arctocyon cf. montanensis" = Arctocyon corrugatus1 Cope 1883 condylarth
"Claenodon acrogenius n. sp." = Arctocyon acrogenius Gazin 1956 condylarth
"Tricentes fremontensis n. sp." = Mimotricentes fremontensis Gazin 1956 condylarth
 Ferae - Viverravidae
Simpsonictis tenuis1 Simpson 1935 placental
 Leptictida - Leptictidae
"Diacodon pearcei n. sp." = Prodiacodon concordiarcensis
"Diacodon pearcei n. sp." = Prodiacodon concordiarcensis Simpson 1935 eutherian
USNM 20970
 Tribosphenida - Peradectidae
"Peradectes elegans" = Peradectes elegans, "Peradectes pauli n. sp." = Peradectes elegans
"Peradectes elegans" = Peradectes elegans Matthew and Granger 1921 marsupial
"Peradectes pauli n. sp." = Peradectes elegans Matthew and Granger 1921 marsupial
USNM 20879-80
Reptilia
 Squamata - Anguidae
Glyptosaurinae indet.2 Marsh 1872 squamates