PBDB Collection

Saddle (Paleocene of the United States)

Also known as Discovery

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

• Paleocoordinates: 51.1° N, 76.6° W (Wright 2013)

• coordinate stated in text

When: Tiffanian (60.9 - 57.5 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: CC0 (CC0)

Taxonomic list

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

•see Gingerich 1976 for discussion of stratigraphy

Show authors, comments, and common names

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

¹Alroy 2002; ²ElShafie 2024; ³Gingerich 1975; ⁴Gunnell 1994; ⁵Scott and Fox 2005; ⁶Scott et al. 2002; ⁷Sloan 1987; ⁸Szalay 1973; ⁹Van Valen 1966; ¹⁰Van Valen 1978; ¹¹West 1972