Martin Canyon Quarry A (Miocene of the United States)
Where: Logan County, Colorado (40.9° N, 103.3° W: paleocoordinates 41.6° N, 99.4° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Pawnee Creek Formation, Hemingfordian (20.4 - 16.0 Ma)
Environment/lithology: "channel"
• "channel fill" (Chantell 1965)
Size classes: macrofossils, mesofossils
Collected by J. A. Tihen in 1964; reposited in the USNM
• Tihen collection is later than the original ones
Primary reference: 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]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 17965: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Clint Boyd
Creative Commons license: CC BY (attribution)
Taxonomic list
• 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
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
Show authors, comments, and common names
| unclassified | |
| Amphibia | |
|
Acris sp.3 Dumeril and Bibron 1841 cricket frog University of Notre Dame specimen in the UNSM collection
| |
|
| |
| Reptilia | |
|
| |
|
| |
|
| |
| Aves | |
Cursoricoccyx geraldinae n. gen. n. sp.9
| |
| Reptilia | |
|
| |
| Mammalia | |
|
| |
|
Amphicyoninae indet. Trouessart 1885 bear-dog | |
|
| |
|
| |
|
Barbouromeryx sp. Frick 1937 ruminant presumably includes "Blastomeryx cf. elegans" and "B. cf. medius" of Galbreath 1953; (5 + 1)
| |
|
| |
|
Merychyus elegans12 Leidy 1858 oreodont 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 proprius9 Leidy 1858 oreodont "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
| |
|
Parahippus pawniensis n. sp. Gidley 1907 anchitheriine horse is from "horizon D" (5 + 1 "?Merychippus")
| |
"Aphelops profectus n. sp." = Peraceras profectum, Menoceras barbouri11, "Brachypotherium americanum n. sp." = Teleoceras americanum13
"Aphelops profectus n. sp." = Peraceras profectum Matthew 1899 rhinoceros 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
"Brachypotherium americanum n. sp." = Teleoceras americanum13 Yatkola and Tanner 1979 rhinoceros (type + specimen of Galbreath 1953)
| |
Scalopoides isodens, "Mydecodon martini" = Mystipterus martini
Scalopoides isodens Wilson 1960 mole
"Mydecodon martini" = Mystipterus martini Wilson 1960 mole | |
|
? Proscalops sp. Matthew 1901 placental
Proscalops cf. secundus Matthew 1909 placental listed as "P. sp." by M & M, but i.d. is repeated by Barnosky 1981
| |
|
? Plesiosorex sp. Pomel 1848 placental | |
"Sorex vireti" = Angustidens vireti, "Sorex compressus" = Limnoecus compressus, Wilsonosorex conulatus8, "Heterosorex roperi" = Pseudotrimylus roperi
"Sorex vireti" = Angustidens vireti Wilson 1960 shrew
"Sorex compressus" = Limnoecus compressus Wilson 1960 shrew
"Heterosorex roperi" = Pseudotrimylus roperi Wilson 1960 shrew | |
|
| |
Oreolagus wilsoni n. sp.1
| |
|
| |
"Plesiosminthus galbreathi" = Schaubeumys galbreathi, "Plesiosminthus clivosus" = Schaubeumys clivosus
"Plesiosminthus galbreathi" = Schaubeumys galbreathi Wilson 1960 jumping mouse
"Plesiosminthus clivosus" = Schaubeumys clivosus Galbreath 1953 jumping mouse | |
|
| |
|
Protospermophilus sp.2 Gazin 1930 squirrel "Sciurus sp. A"; Martin and Mengel 1984 list "Sciurus? sp." DUPLICATE REF 1081 or 1082
| |
|
Pseudotheridomys hesperus Wilson 1960 rodent | |
|
| |
|
Proheteromys sulculus Wilson 1960 rodent 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
| |
|
| |