Martin Canyon Quarry A: Hemingfordian, Colorado
collected by J. A. Tihen 1964

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
? Palaeoarctomys bryanti
Amphibia - Temnospondyli - Hylidae
Acris sp. Dumeril and Bibron 1841
Chantell 1965
University of Notre Dame specimen in the UNSM collection
Amphibia - Temnospondyli - Urodela
Andrias matthewi (Cook 1917)
Meszoely 1966
Mammalia - Rodentia - Sciuridae
Tamias sp. Illinger 1811
Black 1963
    = Tamiini indet.
Alroy 2002
synonym of Marmotini
"Sciurus sp. B"; Black's description indicates this is of the T. ateles grade DUPLICATE REF 1081 or 1082
Protospermophilus sp. Gazin 1930
Black 1963
"Sciurus sp. A"; Martin and Mengel 1984 list "Sciurus? sp." DUPLICATE REF 1081 or 1082
Mammalia - Rodentia - Geomyidae
Proheteromys cf. magnus Wood 1932
Gawne 1975
    = Pleurolicus sp. Cope 1878
Alroy 2002
Mammalia - Rodentia - Heteromyidae
Proheteromys sulculus Wilson 1960
includes "Mookomys cf. formicorum" according to Black 1963a and Gawne 1975; (29 + 5); also may include "? Florentiamys sp." (1 specimen), see Black 1963a, but proper assignment of this species is unclear in any case
Stratimus strobeli Korth et al. 1990
Korth et al. 1990
may include "Mookomys cf. formicorum" in part
Mammalia - Rodentia - Eomyidae
Pseudotheridomys hesperus Wilson 1960
(1 measurement)
Mammalia - Rodentia - Castoridae
Agnotocastorinae indet. Korth and Emry 1997
Korth 1998
    = Hystricops sp. Leidy 1858
Alroy 2002
original and current combination Hystrix (Hystricops)
replaces ID of Korth and Emry 1997a; "Amblycastor sp." of Korth 1994c; "? Anchitheriomys sp."
Monosaulax sp. Stirton 1935
Sutton and Korth 1995
    = Euroxenomys wilsoni n. sp. Korth 2001
Korth 2001
    = Euroxenomys sp. Samson and Radulesco 1973
Alroy 2002
also see comment regarding Topham castorid
Priusaulax wilsoni n. sp. Korth 2017
Korth 2017
see Korth, 2017
Mammalia - Rodentia - Mylagaulidae
Mesogaulus paniensis (Matthew 1902)
described by Galbreath 1953
Mammalia - Rodentia - Zapodidae
Plesiosminthus clivosus Galbreath 1953
recombined as Schaubeumys clivosus
Plesiosminthus galbreathi Wilson 1960
recombined as Schaubeumys galbreathi
Mammalia - Lagomorpha - Leporidae
Hypolagus sp. Dice 1917
    = Archaeolaginae indet.
Alroy 2002
said to be very scarce
Mammalia - Lagomorpha - Ochotonidae
Oreolagus nebrascensis McGrew 1941
Dawson 1965
(5 measurements)
    = Oreolagus wilsoni n. sp. Dawson 1965
Alroy 2002
Mammalia - Erinaceidae
Metechinus cf. marslandensis Meade 1941
Rich 1981
    = Erinaceidae indet. Fischer von Waldheim 1817
Alroy 2002
"Amphechinus sp." of Martin and Mengel 1984
Mammalia - Soricidae
Wilsonosorex conulatus Martin 1978
Martin 1978
"Heterosorex? sp." of Martin
Heterosorex roperi Wilson 1960
recombined as Pseudotrimylus roperi
Sorex vireti Wilson 1960
recombined as Angustidens vireti
Sorex compressus Wilson 1960
recombined as Limnoecus compressus
Mammalia - Plesiosoricidae
? Plesiosorex sp. Pomel 1848
Plesiosorex coloradensis n. sp. Wilson 1960
listed as "P. sp." by Martin and Mengel 1984
Mammalia - Talpidae
Mydecodon martini Wilson 1960
recombined as Mystipterus martini
Scalopoides isodens Wilson 1960
(1 measurement)
Mammalia - Proscalopidae
? Proscalops sp. Matthew 1901
Proscalops cf. secundus Matthew 1909
listed as "P. sp." by M & M, but i.d. is repeated by Barnosky 1981
Mammalia - Perissodactyla - Rhinocerotidae
Aphelops profectus n. sp. (Matthew 1899)
recombined as Peraceras profectum
from "horizon D" and possibly matched by Quarry A specimens, see Galbreath 1953; not clear why this is omitted by Prothero 1989 pers. comm. DUPLICATE REF 3659 or 3703
Menoceras barbouri (Wood 1964)
Prothero 1998
Brachypotherium americanum n. sp. Yatkola and Tanner 1979
Yatkola and Tanner 1979
recombined as Teleoceras americanum
(type + specimen of Galbreath 1953)
Mammalia - Perissodactyla - Equidae
Parahippus pawniensis n. sp. Gidley 1907
is from "horizon D" (5 + 1 "?Merychippus")
Anchitherium sp. von Meyer 1844
MacFadden 2001
Mammalia - Tayassuidae
Hesperhys sp. Douglass 1903
(2 + partial skull of Wilson)
Mammalia - Camelidae
Oxydactylus sp. Peterson 1904
    = Camelidae indet. Gray 1821
Alroy 2002
no specimens discussed by Galbreath 1953
Mammalia - Palaeomerycidae
Barbouromeryx sp. Frick 1937
presumably includes "Blastomeryx cf. elegans" and "B. cf. medius" of Galbreath 1953; (5 + 1)
Mammalia - Merycoidodontidae
Merychyus elegans n. sp. Leidy 1858
Rich 1981
of M. "paniensis" Loomis 1924 is said by Thorpe 1937 to be from "Martin Canon" "M. sp." is listed by Wilson but "M. elegans" by Galbreath 1953
Merycochoerus proprius Leidy 1858
Martin and Mengel 1984
"Merycochoerus proprius magnus": list both "M. proprius" and "M. magnus" but the type of the latter is from Merycochoerus Quarry and description of Quarry A specimens of Galbreath 1953 is unclear
Mammalia - Carnivora - Amphicyonidae
Amphicyoninae indet. Trouessart 1885
Mammalia - Carnivora - Canidae
Cynarctoides acridens (Barbour and Cook 1914)
Martin and Mengel 1984
confirmed by Wang et al. 1999
Tomarctus sp. Cope 1873
Wang et al. 1999
    = Protomarctus optatus Matthew 1924
Alroy 2002
replaces ID of Martin and Mengel 1984; "Cynodesmus?"
Mammalia - Didelphimorphia - Didelphidae
Peratherium sp. Aymard 1850
Hutchison 1968
    = Didelphidae indet. Gray 1821
Alroy 2002
omitted by Martin and Mengel 1984
Reptilia - Boidae
Charina prebottae Brattstrom 1958
Holman 2003
Reptilia - Colubridae
Texasophis fossilis Holman 1977
Holman 2003
Reptilia - Anguidae
Ophisaurus sp. Daudin 1803
Holman 2003
Reptilia - Cuculiformes - Cuculidae
Cursoricoccyx geraldinae n. gen., n. sp. Martin and Mengel 1984
Martin and Mengel 1984
Reptilia - Cracidae
Cracidae indet. Vigors 1825
Martin and Mengel 1984
see common names

Geography
Country:United States State/province:Colorado County:Logan
Coordinates: 40.9° North, 103.3° West (view map)
Paleocoordinates:41.6° North, 99.4° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Neogene Epoch:Miocene
Stage:Burdigalian 10 m.y. bin:Cenozoic 5
*Period:Tertiary *Local age/stage:Late/Upper Arikareean
Key time interval:Hemingfordian
Age range of interval:20.43000 - 15.97000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Pawnee Creek
Local section:PwnCr Local bed:2
Local order:bottom to top
Lithology and environment
Environment:"channel"
Geology comments: "channel fill" (Chantell 1965)
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some genera
Collection size:333 specimens
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:J. A. Tihen Collection dates:1964
Collection method comments: Tihen collection is later than the original ones
Taxonomic list comments:based on discussion of Tedford et al. 1987, this is above the Martin Canyon Beds sensu stricto, which includes the Merycochoerus Quarry (see), and is equivalent to "horizon D" of Matthew
Galbreath implies that Merychyus elegans of Schultz and Falkenbach 1947 ("M. paniensis" referred of Loomis 1924) from near "Pawnee Butte" is from the Martin Canyon equivalent shown in his fig. 8
specimen counts for Insectivora and Rodentia based on Wilson, other taxa on Galbreath 1953
generically determinate NISP 333
Galbreath 1953 indicates the presence of a "Merychippus" - grade form and of a chalicothere, both omitted by later authors; Galbreath does indicate that the chalicothere may be from younger sediments; Coombs 1998 describes Moropus material from "Martin Canyon," but this may be from Merycochoerus Quarry
Metadata
Database number:17965
Authorizer:J. Alroy, C. Boyd Enterer:J. Alroy, C. Boyd
Modifier:J. Alroy Research group:vertebrate
Created:1993-02-18 00:00:00 Last modified:2009-07-15 19:39:06
Access level:the public Released:1993-02-18 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3703. R. W. Wilson. 1960. Early Miocene rodents and insectivores from northeastern Colorado. University of Kansas Paleontological Contributions Vertebrata 7:1-92 [J. Alroy/J. Alroy/J. Alroy]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Kouvari]
1081 C. C. Black. 1963. Miocene rodents from the Thomas Farm local fauna, Florida. Bulletin of the Museum of Comparative Zoology 128(11) [J. Alroy/J. Alroy/J. Ju]
25718 C. J. Chantell. 1965. A lower Miocene Acris (Amphibia:Hylidae) from Colorado. Journal of Paleontology 39(3):507-508 [J. Alroy/J. Alroy/M. Uhen]
1338 M. R. Dawson. 1965. Oreolagus and other Lagomorpha (Mammalia) from the Miocene of Colorado, Wyoming, and Oregon. University of Colorado Studies: Series in Earth Sciences 1:1-36 [J. Alroy/J. Alroy/M. Uhen]
1587 C. E. Gawne. 1975. Rodents from the Zia Sand Miocene of New Mexico. American Museum Novitates 2586 [J. Alroy/J. Alroy/J. Ju]
23550 J. A. Holman. 2003. Early Hemingfordian (Early Miocene) Squamate Reptiles from the Quarry A Local Fauna, Logan County, Colorado. Michigan Academician 34(4):477-480 [J. Alroy/J. Alroy/J. Alroy]
1989 J. H. Hutchison. 1968. Fossil Talpidae (Insectivora, Mammalia) from the Tertiary of Oregon. Bulletin of the Museum of Natural History, University of Oregon 11:1-117 [J. Alroy/J. Alroy/M. Uhen]
2136 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]
6769 W. W. Korth. 2001. Occurrence of the European genus of beaver Euroxenomys (Rodentia: Castoridae) in North America. Paludicola 3(3):73-79 [J. Alroy/J. Alroy/J. Alroy]
67831 W. W. Korth. 2007. A new genus of heliscomyid rodent (Rodentia, Geomyoidea, Heliscomyidae) based on cranial morphology. Paludicola 6(3):118-124 [C. Boyd/C. Boyd]
63849 W. W. Korth. 2017. A new tribe of castoroidine beavers from the late Arikareean to Hemphillian (Oligocene–Miocene) of western North America. Acta Palaeontologica Polonica 62(2):249-258 [M. Uhen/M. Uhen]
21525% 20540W. W. Korth, B. E. Bailey, and R. M. Hunt, Jr. 1990. Geomyoid rodents from the early Hemingfordian (Miocene) of Nebraska. Annals of Carnegie Museum 59(1):25-47 [J. Alroy/J. Alroy/M. Carrano]
4197 B. J. MacFadden. 2001. Three-toed browsing horse Anchitherium clarencei from the early Miocene (Hemingfordian) Thomas Farm, Florida. Bulletin of the Florida Museum of Natural History 43(3):79-109 [J. Alroy/J. Alroy/J. Alroy]
2409 J. E. Martin. 1978. A New and Unusual Shrew (Soricidae) from the Miocene of Colorado and South Dakota. Journal of Paleontology 52(3):636-641 [J. Alroy/J. Alroy/J. Ju]
2429 L. D. Martin and R. M. Mengel. 1984. A New Cuckoo and a Chachalaca from the Early Miocene of Colorado,. In R. M. Mengle (ed.), Carnegie Museum of Natural History Special Publication 9:171-177 [J. Alroy/J. Alroy/M. Uhen]
7566 C. Meszoely. 1966. North American fossil cryptobranchid salamanders. American Midland Naturalist 75(2):495-515 [J. Alroy/J. Alroy/J. Alroy]
6218 D. R. Prothero. 1998. Rhinocerotidae. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary mammals of North America 595-605 [J. Alroy/J. Alroy/J. Alroy]
2897 T. H. V. Rich. 1981. Origin and History of the Erinaceinae and Brachyericinae (Mammalia, Insectivora) in North America. Bulletin of the American Museum of Natural History 171(1):1-116 [J. Alroy/J. Alroy/P. Mannion]
3342 J. F. Sutton and W. W. Korth. 1995. Rodents (Mammalia) from the Barstovian (Miocene) Anceney local fauna, Montana. Annals of Carnegie Museum 64(4):267-314 [J. Alroy/J. Alroy/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]
3781 D. Yatkola and L. G. Tanner. 1979. Brachypotherium from the Tertiary of North America. Occasional Papers of the Museum of Natural History, University of Kansas 77:1-11 [J. Alroy/J. Alroy/M. Uhen]