Pratt Quarry (Miocene of the United States)

Also known as Pratt Slide; McConnell Slide; UNSM Bw-123

Where: Brown County, Nebraska (42.6° N, 100.1° W: paleocoordinates 43.1° N, 97.4° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Merritt Dam Member (Ash Hollow Formation), Late/Upper Clarendonian (13.6 - 10.3 Ma)

• said to be late Clarendonian

•although Rudnick does not indicate the formation, this is clearly the same as Pratt Quarry of Skinner and Johnson 1984

• bed-level stratigraphic resolution

Environment/lithology: "channel"; siliciclastic sediments

• "fluvial channel fill" (Parmley and Holman 2007)

Size classes: macrofossils, mesofossils

Collected by C. E. Rudnick in 1994; reposited in the UNSM

Collection methods: bulk, sieve

• a "sediment screened fauna [was] collected by Rudick (1994)" (Parmley and Holman 2007)

Primary reference: W. W. Korth. 1998. Rodents and lagomorphs (Mammalia) from the Late Clarendonian (Miocene) Ash Hollow Formation, Brown County, Nebraska. Annals of Carnegie Museum 67(4):299-348 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 18327: authorized by John Alroy, entered by John Alroy on 26.03.1995, edited by Jonathan Marcot, Patricia Holroyd and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

• talpids, rodents, and lagomorphs only
Amphibia
 Salientia - Tregobatrachidae
Tregobatrachus sp.7 Holman 1975 frog
 Salientia - Bufonidae
Bufo sp.7 Laurenti 1768 toad
Bufo pliocompactilis7 Wilson 1968 toad
 Salientia - Ranidae
Rana sp.7 Linnaeus 1758 frog
Rana s.l. (Lithobates and Rana) Linnaeus, 1758
 Salientia - Hylidae
cf. Acris sp.7 Dumeril and Bibron 1841 cricket frog
Hyla sp.7 Laurenti 1768 tree frog
 Salientia - Pelobatidae
Spea sp.7 Cope 1866 spadefoot toad
 Salientia -
Varibatrachus abraczinskasae n. gen. n. sp.7 Parmley et al. 2015 frog
Mammalia
 Rodentia - Sciuridae
"Tamiini indet." = Marmotini13 squirrel
Ammospermophilus junturensis Shotwell and Russell 1963 antelope squirrel
Spermophilus cyanocittus3 Korth 1997 ground squirrel
"S. (O.) sp." said to be new, not yet published when 1998 paper went to print
? Petauristodon sp. Engesser 1979 squirrel
 Rodentia - Geomyidae
"Phelosaccomys hibbardi" = Parapliosaccomys hibbardi
"Phelosaccomys hibbardi" = Parapliosaccomys hibbardi Storer 1973 pocket gopher
 Rodentia - Heteromyidae
Lignimus sp., "Mioheteromys cf. agrarius" = Diprionomys agrarius, Cupidinimus prattensis n. sp.
Lignimus sp. Storer 1970 rodent
"Mioheteromys cf. agrarius" = Diprionomys agrarius Wood 1935 rodent
Cupidinimus prattensis n. sp. Korth 1998 rodent
 Rodentia - Eomyidae
cf. Pseudotheridomys sp. Schlosser 1926 rodent
 Rodentia - Castoridae
Hystricops venustus Leidy 1858 beaver
see also Korth 1997b
Dipoides tanneri n. sp. Korth 1998 beaver
"Eucastor planus" = Nothodipoides planus Stirton 1935 beaver
 Rodentia - Mylagaulidae
Pterogaulus barbarellae4 Korth 2000 rodent
"Mylagaulus monodon" in part
Ceratogaulus anecdotus4 Korth 2000 rodent
 Rodentia - Zapodidae
Megasminthus sp. Klingener 1966 jumping mouse
 Rodentia - Cricetidae
Copemys sp., "Tregomys shotwelli" = Copemys shotwelli, "Tregomys pisinnus" = Copemys pisinnus1, Antecalomys phthanus n. sp., "Copemys mariae" = Honeymys mariae
Copemys sp. Wood 1936 mouse
large
"Tregomys shotwelli" = Copemys shotwelli Wilson 1968 mouse
"Tregomys pisinnus" = Copemys pisinnus1 Wilson 1968 mouse
Antecalomys phthanus n. sp. Korth 1998 mouse
"Copemys mariae" = Honeymys mariae Baskin and Korth 1996 mouse
 Lagomorpha - Leporidae
Hypolagus cf. vetus Kellogg 1910 rabbit
Pronotolagus whitei n. sp. Korth 1998 rabbit
Alilepus sp. Dice 1931 rabbit
 Lagomorpha - Ochotonidae
Hesperolagomys cf. galbreathi Clark et al. 1964 pika
Russellagus sp. Storer 1970 pika
 Theriamorpha - Talpidae
Domninoides mimicus11 Wilson 1968 mole
Mystipterus sp.11 Hall 1930 mole
Scalopoides sp.11 Wilson 1960 mole
form A sensu Hutchison
Scalopoides ripafodiator11 Hutchison 1968 mole
 Chiroptera - Vespertilionidae
Lasiurus sp.2 Gray 1831 hairy-tailed bat
a bat
 Perissodactyla - Rhinocerotidae
Aphelops megalodus10 Cope 1873 rhinoceros
Teleoceras major5 Hatcher 1894 rhinoceros
 Perissodactyla - Tapiridae
Tapirus johnsoni2 Schultz et al. 1975 tapir
 Perissodactyla - Equidae
Nannippus sp.6 Matthew 1926 hipparionine horse
Supplemental Table S1
Cormohipparion occidentale6 Leidy 1856 hipparionine horse
Supplemental Table S1
 Carnivora - Canidae
Leptocyon matthewi12 Tedford et al. 2009 canine
Epicyon haydeni14 Leidy 1858 bone-crushing dog
"Pratt Slide Quarry"; "Pratt Quarry"; and "Pratt Place"
Epicyon saevus14 Leidy 1858 bone-crushing dog
also at "Cap Rock Member... McConnel Place" and "Pratt Slide, Plum Creek"
Reptilia
 Squamata - Boidae
Erycinae indet.9 Bonaparte 1825 sand boa
Calamagras or Ogmophis
Tregophis brevirachis9 Holman 1975 sand boa
 Squamata - Crotalidae
cf. Crotalus sp.9 Linnaeus 1758 rattlesnake
Sistrurus sp.8 Garman 1883 pigmy rattlesnake
cf. Agkistrodon sp.9 Huxley 1865 cottonmouth
 Squamata - Colubridae
Colubrinae indet.9 Oppel 1811 colubrid snake
Coluber or Masticophis
Elaphe sp.9 Wagler 1833 colubrid snake
Elaphe cf. kansensis9 Gilmore 1938 colubrid snake
Paracoluber storeri9 Holman 1970 colubrid snake
Ameiseophis robinsoni9 Holman 1976 colubrid snake
Lampropeltis triangulum9 Lacépède 1788 milk snake
"Lampropeltis aff. getula" = Lampropeltis getulus9 Linnaeus 1766 kingsnake
Pituophis sp.9 Holbrook 1842 gopher snake
Texasophis sp.9 Holman 1977 colubrid snake
cf. Opheodrys sp.9 Fitzinger 1843 colubrid snake
Micronatrix juliescottae n. gen. n. sp.9 Parmley and Hunter 2010 colubrid snake
Nerodia sp.9 Baird and Girard 1853 water snake
Nerodia hillmani9 Wilson 1968 water snake
Neonatrix cf. infera9 Holman 1996 colubrid snake
cf. Tropidoclonion sp.9 Cope 1860 colubrid snake
Thamnophis sp.9 Fitzinger 1843 garter snake
Xenodontinae indet.9 Bonaparte 1845 colubrid snake
 Crocodylia -
Crocodylia indet.15 Owen 1842 crocodilian
UNSM 135024 and 135025