Marsland Quarry (Miocene of the United States)

Also known as UNSM Bx-22; UW V-34001

Where: Box Butte County, Nebraska (42.4° N, 103.3° W: paleocoordinates 43.1° N, 99.4° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Runningwater Formation, Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: fluvial; lithology not reported

• "braided stream sediments" (Yatkola 1976)
• none given by Yatkola

Size classes: macrofossils, mesofossils

Collected by D. Yatkola in 1971

Collection methods: bulk, quarrying, sieve,

• Yatkola collection is from "screened matrix"

Primary reference: D. A. Yatkola. 1976. Mid-Miocene lizards from western Nebraska. Copeia 1976(4):645-654 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 17963: authorized by John Alroy, entered by John Alroy on 19.05.2000, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• said to be in the "Marsland" Formation by some authors
Osteichthyes
 Salientia - Pelobatidae
Scaphiopus sp. Holbrook 1836 spadefoot toad
subgenus Scaphiopus
 Salientia - Ranidae
Rana sp. Linnaeus 1758 frog
 Salientia - Hylidae
Hylidae indet. Rafinesque 1815 tree frog
 Salientia - Bufonidae
Bufo sp. Laurenti 1768 toad
 Caudata - Urodela
Ambystoma aff. minshalli Tihen and Chantell 1963 mole salamander
Reptilia
 Testudines - Pantestudinidae
Testudinidae indet. Batsch 1788 turtle
 Squamata - Anguidae
? Gerrhonotus sp. Wiegmann 1828 alligator lizard
cf. Paragerrhonotus ricardensis Estes 1963 squamates
 Squamata - Iguanidae
? Holbrookia antiqua n. sp. Yatkola 1976 lesser earless lizard
Sceloporus sp. Wiegmann 1828 spiny lizard
 Squamata - Boidae
Charina prebottae2 Brattstrom 1958 boa
 Squamata - Colubridae
Dakotaophis greeni2 colubrid snake
Salvadora paleolineata2 Holman 1973 colubrid snake
 Squamata -
Lacertilia indet. lizard
forms "A," "B," and "C"
 Squamata - Rhineuridae
Rhineura marslandensis n. sp. Yatkola 1976 worm lizard
Mammalia
 Rodentia - Heteromyidae
Proheteromys sp.1 Wood 1932 rodent
Schizodontomys amnicolus1 Korth et al. 1990 rodent
 Rodentia - Zapodidae
"Plesiosminthus clivosus" = Schaubeumys clivosus1
"Plesiosminthus clivosus" = Schaubeumys clivosus1 Galbreath 1953 jumping mouse
 Lagomorpha - Ochotonidae
Oreolagus nebrascensis1 McGrew 1941 pika
 Lipotyphla - Erinaceidae
Parvericius montanus5 Koerner 1940 hedgehog
Brachyerix macrotis1 Matthew 1933 hedgehog
 Perissodactyla - Tapiridae
"Miotapirus marslandensis n. sp." = Nexuotapirus marslandensis6
"Miotapirus marslandensis n. sp." = Nexuotapirus marslandensis6 Schoch 1984 tapir
Collected by John Graham Cooke in August 1917, approximately 18 miles (30 km) east of Agate, northwestern Nebraska (that is, near Marsland, Nebraska: see Schultz and Stout 1961, p. 49). S&S'61 p. 49 lists Marsland Quarry only
 Tribosphenida - Plesiosoricidae
Plesiosorex coloradensis1 Wilson 1960 placental
 Tribosphenida - Soricidae
Limnoecus compressus1 Wilson 1960 shrew
 Tribosphenida - Proscalopidae
Mesoscalops scopelotemos1 Reed 1960 placental
 Carnivora - Amphicyonidae
Amphicyon galushai3 Hunt 2003 bear-dog
Daphoenodon (Borocyon) robustum4 Peterson 1910 bear-dog
 Carnivora - Canidae
Metatomarctus canavus7 Simpson 1932 bone-crushing dog
Cynarctoides acridens7 Barbour and Cook 1914 bone-crushing dog