PBDB Collection

Little Pipestone Creek (Eocene of the United States)

Also known as MV 5905 (Honeymoon Quarry); MV 6001 (Cactus Junction); MV 8603 (Little Pipestone Creek North Pocket)

Where: Jefferson County, Montana (46.0° N, 112.0° W)

• Paleocoordinates: 52.7° N, 94.9° W (Wright 2013)

• coordinate based on political unit

• small collection-level geographic resolution

When: Climbing Arrow Member (Renova Formation), Chadronian (37.0 - 33.9 Ma)

• WARNING: Cactus Junction is said by Asher et al. 2002 to be medial Chadronian, whereas the other two MV localities are late Chadronian

Environment/lithology: terrestrial

Size class: macrofossils

Primary reference: A. R. Tabrum, D. R. Prothero, and D. Garcia. 1996. Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 278-311 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 16988: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jill Wertheim and Jonathan Marcot

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Reptilia
Testudines -	"Chelonia indet." = Testudines "Chelonia indet." = Testudines Batsch 1788 turtle
Mammalia
Lagomorpha - Leporidae	Megalagus brachyodon, Palaeolagus temnodon n. sp.⁴, Chadrolagus emryi Megalagus brachyodon Matthew 1903 rabbit Palaeolagus temnodon n. sp.⁴ Douglass 1902 rabbit Chadrolagus emryi Gawne 1978 rabbit
Rodentia - Cylindrodontidae	Cylindrodon fontis Cylindrodon fontis Douglass 1902 rodent
Rodentia - Pipestoneomyidae	Pipestoneomys bisulcatus Pipestoneomys bisulcatus Donohoe 1956 rodent
Rodentia - Aplodontidae	Prosciurus vetustus Prosciurus vetustus Matthew 1903 mountain beaver
Rodentia - Eomyidae	Adjidaumo cf. intermedius⁶, "Paradjidaumo trilophus" = Adjidaumo trilophus, Aulolithomys bounites Adjidaumo cf. intermedius⁶ Korth 1989 rodent "Paradjidaumo trilophus" = Adjidaumo trilophus Cope 1873 rodent Aulolithomys bounites Black 1965 rodent
Rodentia - Ischyromyidae	Ischyromys sp., Ischyromys veterior Ischyromys sp. Leidy 1856 rodent said to be new Ischyromys veterior Matthew 1903 rodent
Perissodactyla - Rhinocerotidae	Rhinocerotidae indet. Rhinocerotidae indet. Gray 1821 rhinoceros
Perissodactyla - Brontotheriidae	Brontotheriidae indet. Brontotheriidae indet. Marsh 1873 brontothere
Perissodactyla - Equidae	Miohippus grandis, "Mesohippus montanensis" = Mesohippus westoni⁶ Miohippus grandis Clark and Beerbower 1967 anchitheriine horse "Mesohippus montanensis" = Mesohippus westoni⁶ Cope 1889 anchitheriine horse
Artiodactyla - Camelidae	Poebrotherium sp. Poebrotherium sp. Leidy 1847 camel
Artiodactyla - Merycoidodontidae	Merycoidodontidae indet., Bathygenys alpha Merycoidodontidae indet. Cook 1912 oreodont "Merycoidodon" originally described as "M. forsythae" by Schultz and Falkenbach 1968, which has been transferred to Miniochoerus; however, material has not been re-examined according to Stevens and Stevens 1996 Bathygenys alpha Douglass 1902 oreodont
Artiodactyla - Leptomerycidae	Pipestoneia douglassi⁵, Leptomeryx sp., Leptomeryx mammifer, Leptomeryx speciosus⁶ Pipestoneia douglassi⁵ Tabrum and Métais 2007 ruminant said to be new Leptomeryx sp. Leidy 1853 ruminant two forms Leptomeryx mammifer Cope 1885 ruminant Leptomeryx speciosus⁶ Lambe 1908 ruminant
Artiodactyla - Agriochoeridae	? Agriochoerus maximus n. sp.⁴ ? Agriochoerus maximus n. sp.⁴ Douglass 1902 agriochoerid of Douglass
Artiodactyla - Protoceratidae	"Leptotragulus profectus" = Trigenicus profectus "Leptotragulus profectus" = Trigenicus profectus Matthew 1903 protoceratid
Artiodactyla - Leptochoeridae	Stibarus montanus Stibarus montanus Matthew 1903 even-toed ungulate
Carnivora - Canidae	Hesperocyon gregarius Hesperocyon gregarius Cope 1873 canid confirmed by Wang 1994
Carnivora - Amphicyonidae	Brachyrhynchocyon dodgei Brachyrhynchocyon dodgei Scott 1898 bear-dog
Carnivora - Ursidae	Parictis montanus³ Parictis montanus³ Clark and Guensburg 1972 bear omitted by Tabrum et al. 1996 and indicated to be from Pipestone Springs general area but not from a specific locality, but this is possibly in error
Creodonta - Hyaenodontidae	"Hyaenodon minutus n. sp." = Hyaenodon crucians⁴ "Hyaenodon minutus n. sp." = Hyaenodon crucians⁴ Leidy 1853 creodont
Soricomorpha - Geolabididae	Centetodon kuenzii Centetodon kuenzii Lillegraven et al. 1981 placental
Soricomorpha - Apternodontidae	Apternodus baladontus², Apternodus mediaevus Apternodus baladontus² Asher et al. 2002 placental MV 6001 Apternodus mediaevus Matthew 1903 placental MV 5905 and MV 8603: Asher et al. 2002
Soricomorpha - Micropternodontidae	Cryptoryctes kayi, Micropternodus borealis Cryptoryctes kayi Reed 1954 placental Micropternodus borealis Matthew 1903 placental
Soricomorpha - Oligoryctidae	Oligoryctes altitalonidus, Oligoryctes cameronensis Oligoryctes altitalonidus Clark 1936 placental Oligoryctes cameronensis Hough 1956 placental
Soricomorpha - Proscalopidae	? Oligoscalops sp. ? Oligoscalops sp. Reed 1961 placental said to be new
Soricomorpha - Soricidae	Domnina thompsoni Domnina thompsoni Simpson 1941 shrew
Tribosphenida - Herpetotheriidae	"Peratherium titanelix" = Copedelphys titanelix, Herpetotherium fugax¹, Herpetotherium valens¹ "Peratherium titanelix" = Copedelphys titanelix Matthew 1903 marsupial Herpetotherium fugax¹ Cope 1873 marsupial Herpetotherium valens¹ Lambe 1908 marsupial

¹Alroy 2002; ²Asher et al. 2002; ³Clark and Guensburg 1972; ⁴Douglass 1902; ⁵Tabrum and Métais 2007; ⁶Tabrum et al. 2001