PBDB Collection

Poison Ivy Quarry: Clarendonian, Nebraska

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia - Proboscidea - Gomphotheriidae

	Eubelodon sp. Barbour 1914
	= cf. Eubelodon sp. Barbour 1914	Tucker et al. 2014
Mammalia - Chiroptera - Vespertilionidae

	Myotis sp. Kaup 1829	Czaplewski et al. 1999
	a bat
Mammalia - Carnivora - Canidae

	Leptocyon sp. Matthew 1918	Tucker et al. 2014

	Cynarctus sp. Matthew 1902
	= Cynarctus crucidens Barbour and Cook 1914	Wang et al. 1999
	= Cynarctus cf. voorhiesi Wang et al. 1999	Tucker et al. 2014
Mammalia - Camelidae

	Aepycamelus sp. Macdonald 1956

	Procamelus grandis Gregory 1939

	Megatylopus sp. (Matthew and Cook 1909)	Tucker et al. 2014
	original and current combination Pliauchenia (Megatylopus)

	Protolabis heterodontus (Cope 1874)	Tucker et al. 2014
Mammalia - Merycoidodontidae

	Ustatochoerus skinneri Schultz and Falkenbach 1941
	= Merychyus novomexicanus Frick 1929	Alroy 2002
	invalid subgroup of Ustatochoerus medius
Mammalia - Moschidae

	Longirostromeryx wellsi (Matthew 1904)
Mammalia - Perissodactyla - Rhinocerotidae

	Teleoceras major Hatcher 1894
	accords with Mead 1999a, Prothero 1989 pers. comm. (2 measurements)
Mammalia - Perissodactyla - Equidae

	Protohippus martini (Hesse 1936)
	= Calippus martini Hesse 1936	Alroy 2002
	agrees with JA pers. obs. 17.6.91
	= ? Protohippus simus Gidley 1906	Tucker et al. 2014
	synonym of Protohippus supremus

	Pliohippus pernix Marsh 1874
	agrees with JA pers. obs. 17.6.91

	Pseudhipparion gratum (Leidy 1869)

	Hippotherium sp. Kaup 1832
	JA pers. obs.: "Cormohipparion occidentale"; new small, short notch species
	= Cormohipparion occidentale Leidy 1856	Tucker et al. 2014

	Neohipparion affine (Leidy 1869)
	JA pers. obs. 17.6.91
Mammalia - Erinaceidae

	Erinaceidae indet. Fischer von Waldheim 1817
Mammalia - Talpidae

	Talpidae indet. (Fischer de Waldheim 1817)
Mammalia - Lagomorpha - Leporidae

	Hypolagus sp. Dice 1917
	= Archaeolaginae indet.	Alroy 2002
Mammalia - Lagomorpha - Ochotonidae

	Hesperolagomys sp. Clark et al. 1964
Mammalia - Rodentia - Heteromyidae

	Mioheteromys cf. amplissimus Korth 1997	Korth 1997
Mammalia - Rodentia - Geomyidae

	Phelosaccomys hibbardi (Storer 1973)	Korth 1997
	recombined as Parapliosaccomys hibbardi
	(1 measurement)
Mammalia - Rodentia - Sciuridae

	Ammospermophilus junturensis (Shotwell and Russell 1963)	Korth 1997

	Spermophilus cyanocittus Korth 1997	Korth 1997
	(1 measurement)
Mammalia - Rodentia - Cricetidae

	Copemys sp. Wood 1936	Tucker et al. 2014
	from gut contents

	Sigmodontinae indet. Wagner 1843
	= Antecalomys phthanus Korth 1998	Korth 1997
	said to be "the new genus and species of sigmodontine" from Pratt Quarry, later described by Korth 1998c
Mammalia - Rodentia - Mylagaulidae

	Mylagaulus cf. monodon Cope 1881
	= Mylagaulidae indet. Cope 1881	Korth 2000
	no mylagaulids are mentioned by Korth 1997b
	= Ceratogaulus cf. anecdotus Korth 2000	Tucker et al. 2014
Reptilia - Gruiformes - Gruidae

	Balearica sp. Brisson	Voorhies 1985	36 specimens
	= Balearica exigua	Tucker et al. 2014
Reptilia - Gruiformes - Rallidae

	Rallidae indet. Vigors 1825	Tucker et al. 2014
Reptilia - Accipitriformes - Accipitridae

	Apatosagittarius terrenus n. gen., n. sp. Feduccia and Voorhies 1989	Tucker et al. 2014

	Anchigyps voorhiesi Zhang and Feduccia 2012	Tucker et al. 2014
Reptilia - Scincidae

	Plestiodon sp. Dumeril and Bibron 1839	Tucker et al. 2014
	from gut contents
Reptilia - Teiidae

	Cnemidophorus cf. sexlineatus (Linnaeus 1766)	Tucker et al. 2014
	from gut contents
Reptilia - Iguanidae

	Sceloporus sp. Wiegmann 1828	Tucker et al. 2014
	two species; from gut contents
Reptilia - Colubridae

	Colubridae indet. Oppel 1811	Tucker et al. 2014
Reptilia - Testudines - Testudinidae

	Testudinidae indet. Batsch 1788	Voorhies 1985	10 specimens
	ETE number of identifiable specimens; species: Testudinidae
	= Hesperotestudo orthopygia Cope 1878	Tucker et al. 2014
Reptilia - Testudines - Emydidae

	Chrysemys sp. Gray 1844	Tucker et al. 2014
	skeletons, said to be new sp.
Angiospermae - Poales - Poaceae

	Berriochloa communis	Tucker et al. 2014
	from gut contents

	Berriochloa primaeva	Tucker et al. 2014
	from gut contents
see common names

Geography

Country:	United States	State/province:	Nebraska	County:	Antelope
Coordinates:	42.3° North, 98.0° West (view map)
Paleocoordinates:	42.7° North, 95.4° West
Basis of coordinate:	based on political unit
Geographic resolution:	small collection

Time

Period:	Neogene	Epoch:	Miocene
10 m.y. bin:	Cenozoic 5-6
*Period:	Tertiary
Key time interval:	Clarendonian
Age range of interval:	12.50000 - 9.40000 m.y. ago
* legacy (obsolete) database fields

Stratigraphy

Formation:	Ash Hollow	Member:	Cap Rock
Local section:	ValAH	Local bed:	5
Local order:	bottom to top

Lithology and environment

Environment:

terrestrial indet.

Taphonomy

Modes of preservation:

body

Collection methods and comments

Reason for describing collection:

general faunal/floral analysis

Taxonomic list comments:most of the small mammals are from the sandstone level beneath the main ash layer
">20" horse skeletons in total
Perkins 1998 "tentatively" correlates the main ash bed with the Ibex Hollow ash bed, dated in Idaho at 11.93 +/- 0.03 Ma (SCLF Ar/Ar)
list of Voorhies 1985 differs considerably, but in most cases because of preliminary identifications; however, "cf. Leptocyon sp." is omitted by Voorhies 1990 and is of unclear status

Metadata

Also known as:

Ashfall; UNSM Ap-116

Database number:

18324

Authorizer:

J. Alroy, P. Holroyd, A. Behrensmeyer

Enterer:

J. Alroy, A. Behrensmeyer, P. Holroyd

Modifier:

J. Alroy

Research group:

vertebrate

Collections that are a subset of this one:

188779

Created:

1992-08-05 00:00:00

Last modified:

2007-03-09 18:24:10

Access level:

the public

Released:

1992-08-05 00:00:00

Creative Commons license:

CC BY

Reference information

Primary reference:

3510.

M. R. Voorhies. 1990. Vertebrate biostratigraphy of the Ogallala Group in Nebraska. In T. C. Gustavson (ed.), Geologic Framework and Regional Hydrology: Upper Cenozoic Blackwater Draw and Ogallala Formations, Great Plains 115-151 [J. Alroy/J. Alroy/J. Marcot]

Secondary references:

6294		J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1297	ETE 1534	N. J. Czaplewski, B. E. Bailey, and R. G. Corner. 1999. Tertiary bats (Mammalia: Chiroptera) from northern Nebraska. Transactions of the Nebraska Academy of Sciences 25:83-93 [J. Alroy/J. Alroy/J. Alroy]
2133		W. W. Korth. 1997. Additonal rodents (Mammalia) from the Clarendonian (Miocene) of northcentral Nebraska and a review of Clarendonian rodent biostratigraphy of that area. Paludicola 1(3):97-111 [J. Alroy/J. Alroy/M. Uhen]
2143		W. W. Korth. 2000. Review of Miocene (Hemingfordian to Clarendonian) mylagaulid rodents (Mammalia) from Nebraska. Annals of Carnegie Museum 69(4):227-280 [J. Alroy/J. Alroy/J. Marcot]
63362		S. T. Tucker, R. E. Otto, R. M. Joeckel and M. R. Voorhies. 2014. The geology and paleontology of Ashfall Fossil Beds, a late Miocene (Clarendonian) mass-death assemblage, Antelope County and adjacent Knox County, Nebraska, USA. Geological Society of America Field Guide 36:1-22 [P. Holroyd/P. Holroyd/M. Uhen]
3558		X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]