Largo (Eocene of the United States)

Also known as CM 1025, 1026, 1027, 1030, 1031, 1033; Gavilan Arroyo; Meniscotherium Quarry (AMNH Quarry 150, NMMNH Loc. 201)
DUPLICATE REF 2311 or 2312

Where: Rio Arriba County, New Mexico (36.5° N, 107.0° W: paleocoordinates 41.2° N, 91.7° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Tapicitos Member (San Jose Formation), Wasatchian (55.8 - 50.3 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: S. G. Lucas, R. M. Schoch, and E. Manning. 1981. The Systematics of Forstercooperia, a Middle to Late Eocene Hyracodontid (Perissodactyla: Rhinocerotoidea) from Asia and Western North America. Journal of Paleontology 55(4):826-841 [J. Alroy/J. Alroy/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 15663: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• Meniscotherium Quarry records based on Williamson and Lucas 1992a are marked with MQ
based on Haskin 1980, falls mostly or entirely within Simpson Section 1, which entirely overlies all of the main Almagre sections
overlies Almagre local fauna (see)
Mammalia
 Cimolesta - Coryphodontidae
Coryphodon armatus Cope 1872 pantodont
probably includes UM specimen of Uhen and Gingerich 1995 from "Laguna Colorado"; includes "C. molestus" of Lucas and Williamson 1992a; C. sp. at MQ DUPLICATE REF 2311 or 2312
 Cimolesta - Esthonychidae
Esthonyx bisulcatus Cope 1874 tillodont
DUPLICATE REF 2311 or 2312
 Primates - Microsyopidae
Microsyops latidens Cope 1882 primate
DUPLICATE REF 2311 or 2312
Microsyops angustidens Matthew 1915 primate
DUPLICATE REF 2311 or 2312
 Primates - Notharctidae
Copelemur tutus Cope 1877 primate
DUPLICATE REF 2311 or 2312
Cantius angulatus2 Cope 1875 primate
neotype, AMNH specimen from Gavilan Arroyo
Cantius frugivorus1 Cope 1875 primate
 Rodentia - Sciuravidae
Knightomys depressus6 Loomis 1907 rodent
this may include "Franimys buccatus" of Black and Sutton 1984
 Rodentia - Ischyromyidae
Paramys copei Loomis 1907 rodent
also listed by Wood 1962 and Korth 1984; P. sp. at MQ DUPLICATE REF 2311 or 2312
Paramys nini1 Wood 1962 rodent
 Condylarthra - Hyopsodontidae
Hyopsodus lysitensis8 Gingerich 1974 condylarth
CM 1025, 1026, 1027, 1031, 1031, 1033 ,"H. miticulus" at MQ
Hyopsodus minor8 Loomis 1905 condylarth
CM 1025
Hyopsodus cf. mentalis8 Cope 1875 condylarth
CM 1025, 1026, 1027, 1030, 1031, 1033
 Tribosphenida - Phenacodontidae
Meniscotherium tapiacitum Cope 1882 condylarth
DUPLICATE REF 2311 or 2312
Meniscotherium chamense Cope 1874 condylarth
at MQ DUPLICATE REF 2311 or 2312
Copecion brachypternus1 Cope 1882 condylarth
 Perissodactyla -
Systemodon tapirinus1 Cope 1875 odd-toed ungulate
 Perissodactyla - Equidae
Xenicohippus osborni5 Bown and Kihm 1981 horse
DUPLICATE REF 2311 or 2312
Eohippus angustidens5 Cope 1875 horse
possibly includes H. sp. material from MQ DUPLICATE REF 2311 or 2312
 Creodonta - Oxyaenidae
Ambloctonus sinosus1 Cope 1875 creodont
Oxyaena simpsoni n. sp. Van Valen 1966 creodont
from 150 Quarry: see Van Valen 1966 DUPLICATE REF 2311 or 2312
Oxyaena lupina4 Cope 1874 creodont
may include O. sp. material from MQ
 Ferae - Viverravidae
Didymictis sp.1 Cope 1875 placental
 Carnivora -
Vulpavus australis Matthew and Granger 1915 carnivoran
DUPLICATE REF 2311 or 2312
 Taeniodonta - Stylinodontidae
Ectoganus gliriformis Cope 1874 taeniodont
DUPLICATE REF 2311 or 2312
 Hyaenodonta - Hyaenodontidae
Hyaenodontidae indet.1 Leidy 1869 eutherian
 Artiodactyla - Diacodexeidae
Bunophorus grangeri Sinclair 1914 even-toed ungulate
probably the AMNH specimen referred by Granger 1914 to "Wasatchia dorseyana" from 10 mi. W of Laguna Colorado, Rio Arriba Co. DUPLICATE REF 2311 or 2312
Diacodexis cf. metsiacus7 Cope 1882 even-toed ungulate
CM 1025
Simpsonodus chacensis1 Cope 1875 even-toed ungulate
 Sarcobora - Apatemyidae
Apatemys bellulus3 Marsh 1872 insectivoran