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

Creative Commons license: CC BY (attribution)

Taxonomic list

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

•see Gingerich 1976 for discussion of stratigraphy

Mammalia
 Primates - Plesiadapidae
"Plesiadapis jepseni" = Plesiadapis anceps, Nannodectes gazini n. sp.2
"Plesiadapis jepseni" = Plesiadapis anceps Simpson 1936 primate
NOT the type
Nannodectes gazini n. sp.2 Gingerich 1975 primate
includes "Pronothodectes cf. matthewi" and "P. cf. simpsoni"
 Primates - Picrodontidae
Picrodus canpacius4 Scott and Fox 2005 primate
 Primates - Palaechthonidae
"Plesiolestes sirokyi n. sp." = Torrejonia sirokyi7
"Plesiolestes sirokyi n. sp." = Torrejonia sirokyi7 Szalay 1973 primate
 Cimolesta - Pantolambdidae
Caenolambda pattersoni n. gen. n. sp.
Caenolambda pattersoni n. gen. n. sp. Gazin 1956 pantodont
 Cimolesta - Palaeoryctidae
Pararyctes pattersoni n. sp.8 Van Valen 1966 eutherian
 Cimolesta - Pentacodontidae
Bisonalveus browni n. gen. n. sp.
Bisonalveus browni n. gen. n. sp. Gazin 1956 eutherian
USNM 20928-20930
 Leptictida - Leptictidae
"Diacodon pearcei n. sp." = Prodiacodon concordiarcensis
"Diacodon pearcei n. sp." = Prodiacodon concordiarcensis Simpson 1935 eutherian
USNM 20970
 Ferae - Viverravidae
Simpsonictis tenuis1 Simpson 1935 placental
 Macroscelidea -
cf. Litocherus lacunatus1 Gazin 1956 elephant shrew
 Macroscelidea - Apheliscidae
Haplaletes pelicatus n. sp., "Litomylus scaphiscus" = Litomylus dissentaneus, Litomylus scaphicus n. sp.
Haplaletes pelicatus n. sp. Gazin 1956 elephant shrew
"Litomylus scaphiscus" = Litomylus dissentaneus Simpson 1935 elephant shrew
Litomylus scaphicus n. sp. Gazin 1956 elephant shrew
 Tribosphenida - Arctocyonidae
"Tricentes fremontensis n. sp." = Mimotricentes fremontensis, "Arctocyon cf. montanensis" = Claenodon montanensis1, Arctocyon cf. ferox1, "Thryptacodon orthogonius" = Thryptacodon orthogonius5, "Thryptacodon belli n. sp." = Thryptacodon orthogonius, Colpoclaenus cf. procyonoides1, "Claenodon acrogenius n. sp." = Mentoclaenodon acrogenius, Chriacus sp., Chriacus pelvidens, Desmatoclaenus mearae9
"Tricentes fremontensis n. sp." = Mimotricentes fremontensis Gazin 1956 condylarth
"Arctocyon cf. montanensis" = Claenodon montanensis1 Gidley 1919 condylarth
Arctocyon cf. ferox1 Cope 1883 condylarth
"Thryptacodon orthogonius" = Thryptacodon orthogonius5 Russell 1929 condylarth
"Thryptacodon belli n. sp." = Thryptacodon orthogonius Russell 1929 condylarth
Colpoclaenus cf. procyonoides1 Matthew 1937 condylarth
"Claenodon acrogenius n. sp." = Mentoclaenodon acrogenius Gazin 1956 condylarth
Chriacus sp. Cope 1883 condylarth
small
Chriacus pelvidens Cope 1881 condylarth
Desmatoclaenus mearae9 Van Valen 1978 condylarth
 Ungulata - Hyopsodontidae
"Mioclaenidae indet." = Hyopsodontidae1, Promioclaenus pipiringosi n. sp., ? Protoselene novissimus n. sp.
"Mioclaenidae indet." = Hyopsodontidae1 Trouessart 1879 condylarth
Promioclaenus pipiringosi n. sp. Gazin 1956 condylarth
? Protoselene novissimus n. sp. Gazin 1956 condylarth
 Ungulata - Phenacodontidae
Ectocion cf. collinus1 Russell 1929 condylarth
? Phenacodus bisonensis n. sp. Gazin 1956 condylarth
 Insectivora - Apatemyidae
Labidolemur major n. sp.10 West 1972 insectivoran
DUPLICATE REF 3593 or 3594
 Theriiformes - Peradectidae
"Peradectes elegans" = Peradectes elegans, "Peradectes pauli n. sp." = Peradectes elegans
"Peradectes elegans" = Peradectes elegans Matthew and Granger 1921 metatherian
"Peradectes pauli n. sp." = Peradectes elegans Matthew and Granger 1921 metatherian
USNM 20879-80
 Multituberculata - Neoplagiaulacidae
cf. Ectypodus musculus Matthew and Granger 1921 multituberculate
Mesodma pygmaea6 Sloan 1987 multituberculate
 Multituberculata - Ptilodontidae
Ptilodus sp.3 Cope 1881 multituberculate
"P. sp. C"; presumably includes "cf. P. montanus"
Ptilodus gnomus5 Scott et al. 2002 multituberculate
 Multituberculata - Cimolodontidae
Anconodon cochranensis6 Russell 1929 multituberculate