PBDB Collection

Douglass Quarry (Paleocene of the United States)

Also known as Simpson's Locality 63

Where: Sweetgrass County, Montana (45.8° N, 109.8° W)

• Paleocoordinates: 54.8° N, 76.5° W (Wright 2013)

• coordinate based on political unit

• small collection-level geographic resolution

When: Tiffanian (60.9 - 56.2 Ma)

• in a stratigraphically isolated reversed polarity zone interpreted as chron C26r: Butler et al. 1987

Environment/lithology: terrestrial

Primary reference: D. W. Krause and P. D. Gingerich. 1983. Mammalian Fauna from Douglass Quarry, Earliest Tiffanian (Late Paleocene) of the Eastern Crazy Mountain Basin, Montana. Contributions from the Museum of Paleontology, University of Michigan 26(9):157-196 [J. Alroy/J. Alroy/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 15025: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by K. Christopher Beard and Philip Mannion

Creative Commons license: CC0 (CC0)

Taxonomic list

• Krause and Maas 1990 give exact NISP counts that sum to 1205; however, "over 1800 identifiable specimens" are present according to Hartman and Krause 1993

Show authors, comments, and common names

Mammalia
Multituberculata - Ptilodontidae	Ptilodus sp. Ptilodus sp. Cope 1881 multituberculate said to be new; presumably "P. sp. T" of Krause 1987a; two forms according to Krause and Maas 1990
Multituberculata - Cimolodontidae	"Anconodon cochranensis" = Anconodon cochranensis, "Anconodon lewisi" = Anconodon cochranensis², Anconodon gidleyi⁶ "Anconodon cochranensis" = Anconodon cochranensis Russell 1929 multituberculate "Anconodon lewisi" = Anconodon cochranensis² Russell 1929 multituberculate Anconodon gidleyi⁶ Simpson 1935 multituberculate
Multituberculata - Neoplagiaulacidae	Neoplagiaulax sp.², Neoplagiaulax nelsoni², Neoplagiaulax hunteri, Neoplagiaulax donaldorum n. sp.⁶, Ectypodus sp.⁶, ? Mimetodon sp.², Mesodma pygmaea² Neoplagiaulax sp.² Lemoine 1882 multituberculate said to be new Neoplagiaulax nelsoni² Sloan 1987 multituberculate Neoplagiaulax hunteri Simpson 1936 multituberculate Neoplagiaulax donaldorum n. sp.⁶ Scott and Krause 2006 multituberculate Ectypodus sp.⁶ Matthew and Granger 1921 multituberculate ? Mimetodon sp.² Jepsen 1940 multituberculate Mesodma pygmaea² Sloan 1987 multituberculate
Tribosphenida - Peradectidae	Peradectes cf. elegans² Peradectes cf. elegans² Matthew and Granger 1921 marsupial
Leptictida - Leptictidae	Prodiacodon furor², Prodiacodon concordiarcensis², Acmeodon sp.², Myrmecoboides montanensis² Prodiacodon furor² Novacek 1977 eutherian Prodiacodon concordiarcensis² Simpson 1935 eutherian Acmeodon sp.² Matthew and Granger 1921 eutherian Myrmecoboides montanensis² Gidley 1915 eutherian
Cimolesta - Titanoideidae	Titanoides sp. Titanoides sp. Gidley 1917 pantodont said to be T. "zeuxis" by Simons 1960
Cimolesta - Pentacodontidae	Pentacodontidae indet.², Bisonalveus browni Pentacodontidae indet.² Simpson 1937 eutherian said to be new; "cf. Aphronorus sp." Bisonalveus browni Gazin 1956 eutherian
Cimolesta - Cimolestidae	Paleotomus senior Paleotomus senior Simpson 1937 eutherian
Taeniodonta - Stylinodontidae	Psittacotherium multifragum⁴ Psittacotherium multifragum⁴ Cope 1882 taeniodont Krause and Maas 1990 do not appear to be aware of this i.d.
Ferae - Viverravidae	"Bryanictis sp." = Protictis (Bryanictis)¹, Simpsonictis sp.² "Bryanictis sp." = Protictis (Bryanictis)¹ MacIntyre 1966 placental Simpsonictis sp.² MacIntyre 1962 placental
Tribosphenida - Phenacodontidae	Ectocion collinus, Phenacodus bisonensis Ectocion collinus Russell 1929 condylarth Phenacodus bisonensis Gazin 1956 condylarth
Procreodi - Arctocyonidae	Thryptacodon ? orthogonius⁵, Thryptacodon cf. orthogonius⁵, Chriacus pelvidens, Mimotricentes ? tedfordi³, Mimotricentes fremontensis, Colpoclaenus ? keeferi², "Arctocyon cf. montanensis" = Arctocyon corrugatus¹ Thryptacodon ? orthogonius⁵ Russell 1929 condylarth Thryptacodon cf. orthogonius⁵ Russell 1929 condylarth Chriacus pelvidens Cope 1881 condylarth Mimotricentes ? tedfordi³ McKenna and Lofgren 2003 condylarth Mimotricentes fremontensis Gazin 1956 condylarth Colpoclaenus ? keeferi² Patterson and McGrew 1962 condylarth "Arctocyon cf. montanensis" = Arctocyon corrugatus¹ Cope 1883 condylarth
Acreodi - Mesonychidae	Dissacus sp.² Dissacus sp.² Cope 1881 condylarth
Tribosphenida - Pantolestoidae	Bessoecetor septentrionalis⁵ Bessoecetor septentrionalis⁵ Russell 1929 placental
Soricomorpha - Nyctitheriidae	Leptacodon munusculum Leptacodon munusculum Simpson 1935 placental
Dermoptera -	Elpidophorus elegans² Elpidophorus elegans² Simpson 1927 colugo
Primates - Paromomyidae	Ignacius sp.² Ignacius sp.² Matthew and Granger 1921 primate
Primates - Carpolestidae	Elphidotarsius russelli² Elphidotarsius russelli² Krause 1978 primate
Primates - Picrodontidae	Picrodus silberlingi² Picrodus silberlingi² Douglass 1908 primate
Primates - Plesiadapidae	Plesiadapis praecursor n. sp., Nannodectes intermedius Plesiadapis praecursor n. sp. Gingerich 1975 primate Nannodectes intermedius Gazin 1971 primate
Macroscelidea - Apheliscidae	Gingerichia geoteretes n. gen. n. sp.⁷, Litomylus dissentaneus Gingerichia geoteretes n. gen. n. sp.⁷ Zack et al. 2005 elephant shrew said to be new Litomylus dissentaneus Simpson 1935 elephant shrew

¹Alroy 2002; ²Krause and Maas 1990; ³McKenna and Lofgren 2003; ⁴Schoch 1986; ⁵Scott et al. 2002; ⁶Scott and Krause 2006; ⁷Zack et al. 2005