PBDB Collection

Shotgun (Paleocene of the United States)

Also known as UW V-60014, V-60016; Keefer Hill; Twin Buttes; Jenkins Mountain; New Anthill

Where: Fremont County, Wyoming (43.5° N, 109.2° W: paleocoordinates 49.4° N, 89.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Shotgun Member (Fort Union Formation), Tiffanian (61.7 - 56.8 Ma)

Environment/lithology: terrestrial

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 15067: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• this is NOT West Side of Shotgun Butte (see), which is the uppermost of three fossiliferous horizons; the fauna of the lowest horizon is not discussed by Gunnell

•apart from the plesiadapiforms, Gunnell's list is mostly repeated from ancient sources without modification

•Gunnell lists Eudaemonema cuspidata from "Shotgun fauna, Keefer Hill" but omits this from his faunal list

Show authors, comments, and common names

unclassified
-	Peryptychus carinidens Peryptychus carinidens
Mammalia
Theriamorpha - Peradectidae	cf. Peradectes sp. cf. Peradectes sp. Matthew and Granger 1921 marsupial
Cimolesta - Cimolestidae	Gelastops sp. Gelastops sp. Simpson 1935 eutherian
Cimolesta - Pantolambdidae	Pantolambda cf. cavirictum Pantolambda cf. cavirictum Cope 1883 pantodont
Cimolesta - Pentacodontidae	Aphronorus fraudator³, Aphronorus orieli³ Aphronorus fraudator³ Simpson 1935 eutherian Aphronorus orieli³ Gazin 1969 eutherian Gunnell lists "cf. Aphronorus sp." and once again is merely repeating an old i.d.
Condylarthra - Hyopsodontidae	Promioclaenus sp. Promioclaenus sp. Trouessart 1904 condylarth
Macroscelidea - Apheliscidae	cf. Litomylus sp. cf. Litomylus sp. Simpson 1935 elephant shrew
Insectivora -	Insectivora indet.¹ Insectivora indet.¹ Bowdich 1821 insectivoran
Theriamorpha - Periptychidae	Periptychus cf. carinidens¹, Anisonchus cf. sectorius Periptychus cf. carinidens¹ Cope 1881 condylarth Anisonchus cf. sectorius Cope 1881 condylarth
Theriamorpha - Phenacodontidae	Ectocion sp., Phenacodus matthewi⁸ Ectocion sp. Cope 1882 condylarth ominously not mentioned by Thewissen 1990, but Keefer and Troyer 1964 list "Gidleyina sp." Phenacodus matthewi⁸ Simpson 1935 condylarth from Tiffanian of "Keefer Hill"
Procreodi - Arctocyonidae	Colpoclaenus keeferi n. sp., Arctocyon cf. ferox¹, "Mimotricentes subtrigonus" = Tricentes subtrigonus¹ Colpoclaenus keeferi n. sp. Patterson and McGrew 1962 condylarth see Patterson and McGrew 1962 Arctocyon cf. ferox¹ Cope 1883 condylarth "Mimotricentes subtrigonus" = Tricentes subtrigonus¹ Cope 1881 condylarth
Theriamorpha - Viverravidae	cf. Simpsonictis sp.⁴, Bryanictis microlestes² cf. Simpsonictis sp.⁴ MacIntyre 1962 placental Bryanictis microlestes² Simpson 1935 placental
Theriamorpha - Pantolestoidae	Pentacodon sp. Pentacodon sp. Scott 1892 placental
Dermoptera -	Elpidophorus cf. minor Elpidophorus cf. minor Simpson 1937 colugo
Primates - Picrodontidae	Picrodus canpacius⁶ Picrodus canpacius⁶ Scott and Fox 2005 primate described by McGrew and Patterson 1962
Primates - Plesiadapidae	Plesiadapis sp., Nannodectes intermedius n. sp. Plesiadapis sp. Gervais 1877 primate resembles P. praecursor; assigned to that species by Gingerich 1976 and Krause and Gingerich 1983 Nannodectes intermedius n. sp. Gazin 1971 primate
Primates - Carpolestidae	Elphidotarsius shotgunensis, Carpodaptes cf. hazelae Elphidotarsius shotgunensis Gazin 1971 primate Carpodaptes cf. hazelae Simpson 1936 primate
Primates - Paromomyidae	Ignacius cf. frugivorus, Ignacius fremontensis, Paromomys cf. depressidens Ignacius cf. frugivorus Matthew and Granger 1921 primate Ignacius fremontensis Gazin 1971 primate Paromomys cf. depressidens Gidley 1923 primate
Primates - Palaechthonidae	Palenochtha cf. minor, Plesiolestes cf. problematicus, Torrejonia sirokyi Palenochtha cf. minor Gidley 1923 primate Plesiolestes cf. problematicus Jepsen 1930 primate Torrejonia sirokyi Szalay 1973 primate
Primates -	Palaechthon cf. alticuspis, Palaechthon woodi Palaechthon cf. alticuspis Gidley 1923 primate Palaechthon woodi Gazin 1971 primate
Multituberculata - Neoplagiaulacidae	Parectypodus sinclairi⁷, Parectypodus sylviae⁷, Ectypodus aphronorus⁷, Mimetodon cf. silberlingi, Neoplagiaulax nelsoni⁷, Mesodma pygmaea⁷ Parectypodus sinclairi⁷ Simpson 1935 multituberculate Parectypodus sylviae⁷ Rigby 1980 multituberculate Ectypodus aphronorus⁷ Sloan 1987 multituberculate Gunnell lists "E. sp." Mimetodon cf. silberlingi Simpson 1935 multituberculate Neoplagiaulax nelsoni⁷ Sloan 1987 multituberculate Mesodma pygmaea⁷ Sloan 1987 multituberculate
Multituberculata - Cimolodontidae	"Anconodon lewisi n. sp." = Anconodon cochranensis⁷ "Anconodon lewisi n. sp." = Anconodon cochranensis⁷ Russell 1929 multituberculate
Multituberculata - Ptilodontidae	Ptilodus sp. Ptilodus sp. Cope 1881 multituberculate given as "P. cf. montanus" by Keefer and Troyer 1964
Multituberculata - Taeniolabididae	Catopsalis calgariensis⁵ Catopsalis calgariensis⁵ Russell 1926 multituberculate Gunnell lists C. cf. fissidens; record of C. cf. fissidens in Keefer 1961 explicitly referred to C. calgariensis by Middleton

¹Alroy 2002; ²Krause and Gingerich 1983; ³Krishtalka et al. 1975; ⁴MacIntyre 1966; ⁵Middleton 1982; ⁶Scott and Fox 2005; ⁷Sloan 1987; ⁸Thewissen 1990