PBDB Collection

Massacre Lake RV-7043 (Miocene of the United States)

Where: Washoe County, Nevada (41.7° N, 119.7° W)

• Paleocoordinates: 46.5° N, 113.0° W (Wright 2013)

• coordinate based on political unit

• small collection-level geographic resolution

When: Hemingfordian (18.5 - 16.3 Ma)

Environment/lithology: terrestrial

Primary reference: M. F. Morea. 1981. The Massacre Lake local fauna (Mammalia, Hemingfordian) from northwestern Washoe County, Nevada. Ph. D. thesis UC Riverside 247 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 18962: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot and Nicholas Famoso

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Mammalia
Rodentia - Mylagaulidae	"Mesogaulus vetus" = Alphagaulus vetus "Mesogaulus vetus" = Alphagaulus vetus Matthew 1924 rodent
Rodentia - Eomyidae	Megapeomys bobwilsoni n. sp.⁷ Megapeomys bobwilsoni n. sp.⁷ Morea and Korth 2002 rodent said to be new
Rodentia - Castoridae	Castoridae indet. Castoridae indet. Gray 1821 beaver said to be new
Rodentia - Sciuridae	Miospermophilus sp., Miospermophilus wyomingensis, Protospermophilus sp., Protospermophilus angusticeps Miospermophilus sp. Black 1963 squirrel said to be new Miospermophilus wyomingensis Black 1963 squirrel Protospermophilus sp. Gazin 1930 squirrel forms "A" and "B" Protospermophilus angusticeps Matthew 1933 squirrel
Rodentia - Aplodontidae	Ansomys nevadensis n. sp.⁵, Liodontia dailyi³ Ansomys nevadensis n. sp.⁵ Kelly and Korth 2005 mountain beaver Liodontia dailyi³ Hopkins 2019 mountain beaver said to be new
Carnivora - Amphicyonidae	Amphicyonidae indet.¹ Amphicyonidae indet.¹ Haeckel 1886 bear-dog
Carnivora - Procyonidae	Bassaricyonoides stewartae n. gen. n. sp.² Bassaricyonoides stewartae n. gen. n. sp.² Baskin and Morea 2003 procyonid carnivore said to be new
Carnivora - Ursidae	Ursavus cf. brevirhinus⁴ Ursavus cf. brevirhinus⁴ Hofmann 1887 bear
Carnivora - Canidae	"Tomarctus kelloggi" = Paracynarctus kelloggi, "Tomarctus optatus" = Protomarctus optatus "Tomarctus kelloggi" = Paracynarctus kelloggi Merriam 1911 bone-crushing dog not discussed by Wang et al. 1999 "Tomarctus optatus" = Protomarctus optatus Matthew 1924 bone-crushing dog not discussed by Wang et al. 1999
Artiodactyla - Tayassuidae	"Cynorca sociale" = Marshochoerus socialis, Desmathyus pinensis, "Desmathyus aff. validus" = Hesperhys vagrans "Cynorca sociale" = Marshochoerus socialis Marsh 1875 peccary Desmathyus pinensis Matthew 1907 peccary "Desmathyus aff. validus" = Hesperhys vagrans Douglass 1903 peccary
Artiodactyla - Moschidae	Problastomeryx primus⁹ Problastomeryx primus⁹ Matthew 1908 musk deer two forms, "A" and "B"
Artiodactyla - Antilocapridae	"Cosoryx wilsoni" = Cosoryx (Paracosoryx) wilsoni "Cosoryx wilsoni" = Cosoryx (Paracosoryx) wilsoni Frick 1937 pronghorn
Artiodactyla - Cervidae	Nemomeryx vyaensis n. gen. n. sp. Nemomeryx vyaensis n. gen. n. sp. Morea 1981 deer
Artiodactyla - Dromomerycidae	"Dromomeryx aff. scotti" = Subdromomeryx antilopinus, Bouromeryx submilleri, Bouromeryx americanus⁶ "Dromomeryx aff. scotti" = Subdromomeryx antilopinus Scott 1893 ruminant Bouromeryx submilleri Frick 1937 ruminant Bouromeryx americanus⁶ Douglass 1899 ruminant
Artiodactyla - Merycoidodontidae	Ticholeptus aff. zygomaticus, Merychyus sp. Ticholeptus aff. zygomaticus Cope 1878 oreodont Merychyus sp. Leidy 1858 oreodont
Perissodactyla - Rhinocerotidae	Aphelops megalodus⁸ Aphelops megalodus⁸ Cope 1873 rhinoceros
Perissodactyla - Equidae	"Merychippus carrizoensis" = Parapliohippus carrizoensis, Anchitheriinae indet.¹, Parahippus pawniensis "Merychippus carrizoensis" = Parapliohippus carrizoensis Dougherty 1940 horse Anchitheriinae indet.¹ Leidy 1869 anchitheriine horse Parahippus pawniensis Gidley 1907 anchitheriine horse
Soricomorpha - Soricidae	Pseudotrimylus sp., "Antesorex compressus" = Limnoecus compressus Pseudotrimylus sp. Gureev 1971 shrew said to be new "Antesorex compressus" = Limnoecus compressus Wilson 1960 shrew

¹Alroy 2002; ²Baskin 2003; ³Hopkins 2019; ⁴Hunt 1998; ⁵Kelly and Korth 2005; ⁶Liter and Prothero 2003; ⁷Morea and Korth 2002; ⁸Prothero 2005; ⁹Prothero 2011