PBDB

Flagstaff Rim II (Eocene of the United States)

Also known as Little Lone Tree Gulch; "44 feet below Ash B" = B Minus 44' Quarry

Where: Natrona County, Wyoming (43.2° N, 107.1° W: paleocoordinates 44.8° N, 98.4° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: White River Formation, Chadronian (37.2 - 33.9 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial

Size classes: macrofossils, mesofossils

Collection methods: quarrying,

Primary reference: R. J. Emry. 1979. Review of Toxotherium (Perissodactyla: Rhinocerotoidea) with new material from the early Oligocene of Wyoming. Proceedings of the Biological Society of Washington 92(1):28-41 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 16961: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot and Terri Cleary

Creative Commons license: CC BY (attribution)

Taxonomic list

• 25-54 m, below Ash B

•includes Little Lone Tree Gulch assemblage of Emry 1979 from "44 feet below Ash B" = B Minus 44' Quarry

•following species are listed in Emry 1979 but not in Emry pers. comm.: cf. "Ictops" acutidens (apparently = "Frictops emryi") Apternodus sp. - not altitalonidus Heliscomys sp. Palaeolagus sp.

Show authors, comments, and common names

unclassified
-	"Novacek leptictid" acutidens⁷ "Novacek leptictid" acutidens⁷ pers. commun. 16.2.00: "Frictops emryi"
Mammalia
Didelphimorphia - Didelphidae	Didelphidae indet.¹ Didelphidae indet.¹ opossum
Theriamorpha - Geolabididae	Centetodon chadronensis³ Centetodon chadronensis³ Lillegraven et al. 1981 placental
Theriamorpha - Oligoryctidae	Oligoryctes altitalonidus¹ Oligoryctes altitalonidus¹ Clark 1936 placental
Placentalia -	Chiroptera indet.³ Chiroptera indet.³ Blumenbach 1779 bat a bat
Perissodactyla -	Toxotherium hunteri Toxotherium hunteri Wood 1961 odd-toed ungulate
Perissodactyla - Hyracodontidae	Hyracodon cf. priscidens³ Hyracodon cf. priscidens³ Lambe 1905 odd-toed ungulate see also Prothero 1996e
Perissodactyla - Rhinocerotidae	"Caenopus dakotensis" = Penetrigonias dakotensis³, ? Trigonias sp.³ "Caenopus dakotensis" = Penetrigonias dakotensis³ Peterson 1920 rhinoceros ? Trigonias sp.³ Lucas 1900 rhinoceros
Perissodactyla - Equidae	Equidae indet.¹ Equidae indet.¹ Gray 1821 horse
Perissodactyla - Brontotheriidae	Brontotheriidae indet.³ Brontotheriidae indet.³ Marsh 1873 brontothere
Artiodactyla - Leptochoeridae	Stibarus sp.³ Stibarus sp.³ Cope 1873 even-toed ungulate
Artiodactyla - Praetragulidae	Parvitragulus priscus³ Parvitragulus priscus³ Emry 1978 ruminant
Artiodactyla - Hypisodontidae	Hypisodus sp. Hypisodus sp. Cope 1873 ruminant
Artiodactyla - Agriochoeridae	Agriochoerus sp. Agriochoerus sp. Leidy 1850 agriochoerid said to be new
Artiodactyla - Leptomerycidae	Leptomeryx speciosus³, Leptomeryx mammifer³ Leptomeryx speciosus³ Lambe 1908 ruminant "B" Leptomeryx mammifer³ Cope 1885 ruminant "D"
Artiodactyla - Protoceratidae	"Leptotragulus profectus" = Trigenicus profectus³ "Leptotragulus profectus" = Trigenicus profectus³ Matthew 1903 protoceratid
Artiodactyla - Merycoidodontidae	"Merycoidodon culbertsoni" = Merycoidodon culbertsonii¹, Bathygenys sp.³ "Merycoidodon culbertsoni" = Merycoidodon culbertsonii¹ Leidy 1848 oreodont Bathygenys sp.³ Douglass 1902 oreodont
Artiodactyla - Camelidae	Poebrotherium sp. Poebrotherium sp. Leidy 1847 camel
Artiodactyla - Oromerycidae	Eotylopus reedi³ Eotylopus reedi³ Matthew 1910 even-toed ungulate
Creodonta - Hyaenodontidae	Hyaenodon vetus³ Hyaenodon vetus³ Stock 1933 creodont
Carnivora - Ursidae	"Subparictis parvus" = Parictis parvus² "Subparictis parvus" = Parictis parvus² Clark and Beerbower 1967 bear
Carnivora - Amphicyonidae	Daphoenictis sp.³, Brachyrhynchocyon sp.¹ Daphoenictis sp.³ Hunt 1974 bear-dog Brachyrhynchocyon sp.¹ Scott and Jepsen 1936 bear-dog
Carnivora - Canidae	"Hesperocyon paterculus" = Hesperocyon gregarius³ "Hesperocyon paterculus" = Hesperocyon gregarius³ Cope 1873 canid "ref 6294: not documented as H. gregarius by Wang 1994"
Pholidota - Patriomanidae	"Patriomanis americanus" = Patriomanis americana³ "Patriomanis americanus" = Patriomanis americana³ Emry 1970 pangolin
Theriamorpha - Epoicotheriidae	Epoicotherium cf. unicum³ Epoicotherium cf. unicum³ Douglass 1905 placental
Rodentia - Sciuridae	Douglassciurus jeffersoni¹ Douglassciurus jeffersoni¹ Douglass 1902 squirrel see also Emry and Thorington 1984
Rodentia - Cylindrodontidae	Cylindrodon natronensis⁴ Cylindrodon natronensis⁴ Emry and Korth 1996 rodent
Rodentia - Ischyromyidae	Ischyromys veterior¹ Ischyromys veterior¹ Matthew 1903 rodent "or Titanotheriomys"
Rodentia - Sciuravidae	? Pauromys sp.³ ? Pauromys sp.³ Troxell 1923 rodent
Rodentia - Eutypomyidae	Eutypomys parvus⁵ Eutypomys parvus⁵ Lambe 1908 rodent
Rodentia - Heliscomyidae	Heliscomys ostranderi⁶ Heliscomys ostranderi⁶ Korth et al. 1991 rodent Little Lone Tree Gulch
Rodentia - Eomyidae	Metanoiamys paradoxus⁵, Adjidaumo ? burkei¹, Adjidaumo minimus⁵, "Paradjidaumo cf. trilophus" = Adjidaumo trilophus³, Zemiodontomys burkei¹, Aulolithomys vexilliames⁵, Aulolithomys bounites³, Namatomys lloydi³ Metanoiamys paradoxus⁵ Emry and Korth 2012 rodent B Minus 44’ Quarry; possibly type locality Adjidaumo ? burkei¹ Russell 1954 rodent Adjidaumo minimus⁵ Matthew 1903 rodent "Paradjidaumo cf. trilophus" = Adjidaumo trilophus³ Cope 1873 rodent Zemiodontomys burkei¹ Black 1965 rodent Aulolithomys vexilliames⁵ Korth and Emry 1997 rodent B Minus 44’ Quarry Aulolithomys bounites³ Black 1965 rodent Namatomys lloydi³ Black 1965 rodent
Cimolesta - Apatemyidae	Sinclairella sp.³ Sinclairella sp.³ Jepsen 1934 eutherian
Multituberculata - Neoplagiaulacidae	Ectypodus lovei³ Ectypodus lovei³ Sloan 1966 multituberculate
Reptilia
Squamata - Anguidae	Helodermoides tuberculatus⁸, cf. Helodermoides tuberculatus⁸ Helodermoides tuberculatus⁸ Douglass 1903 squamates AMNH Frick collection no. 9166, disarticulated skull and skeleton; USNM 214735, crushed right maxilla and dentary, fragments of skull and osteoderms cf. Helodermoides tuberculatus⁸ Douglass 1903 squamates USNM 215096, body osteoderm; 215137, cephalic and body osteoderms; 244220, partial skull

¹Alroy 2002; ²Baskin and Tedford 1996; ³Emry 1992; ⁴Emry and Korth 1996; ⁵Emry and Korth 2012; ⁶Korth et al. 1991; ⁷Novacek 2000; ⁸Sullivan 1979