PBDB Collection

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)

Show authors, comments, and common names

Mammalia
Cimolesta - Coryphodontidae	Coryphodon armatus 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 - Apatemyidae	Apatemys bellulus³ Apatemys bellulus³ Marsh 1872 eutherian
Cimolesta - Esthonychidae	Esthonyx bisulcatus Esthonyx bisulcatus Cope 1874 tillodont DUPLICATE REF 2311 or 2312
Condylarthra - Hyopsodontidae	Hyopsodus lysitensis⁸, Hyopsodus cf. mentalis⁸, Hyopsodus minor⁸ Hyopsodus lysitensis⁸ Gingerich 1974 condylarth CM 1025, 1026, 1027, 1031, 1031, 1033 ,"H. miticulus" at MQ Hyopsodus cf. mentalis⁸ Cope 1875 condylarth CM 1025, 1026, 1027, 1030, 1031, 1033 Hyopsodus minor⁸ Loomis 1905 condylarth CM 1025
Primates - Microsyopidae	Microsyops angustidens, Microsyops latidens Microsyops angustidens Matthew 1915 primate DUPLICATE REF 2311 or 2312 Microsyops latidens Cope 1882 primate DUPLICATE REF 2311 or 2312
Primates - Notharctidae	Cantius frugivorus¹, Cantius angulatus², Copelemur tutus Cantius frugivorus¹ Cope 1875 primate Cantius angulatus² Cope 1875 primate neotype, AMNH specimen from Gavilan Arroyo Copelemur tutus Cope 1877 primate DUPLICATE REF 2311 or 2312
Rodentia - Ischyromyidae	Paramys copei, Paramys nini¹ 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
Rodentia - Sciuravidae	Knightomys depressus⁶ Knightomys depressus⁶ Loomis 1907 rodent this may include "Franimys buccatus" of Black and Sutton 1984
Creodonta - Oxyaenidae	Oxyaena lupina⁴, Oxyaena simpsoni n. sp., Ambloctonus sinosus¹ Oxyaena lupina⁴ Cope 1874 creodont may include O. sp. material from MQ Oxyaena simpsoni n. sp. Van Valen 1966 creodont from 150 Quarry: see Van Valen 1966 DUPLICATE REF 2311 or 2312 Ambloctonus sinosus¹ Cope 1875 creodont
Creodonta - Hyaenodontidae	Hyaenodontidae indet.¹ Hyaenodontidae indet.¹ Leidy 1869 creodont
Ferae -	Vulpavus australis Vulpavus australis Matthew and Granger 1915 placental DUPLICATE REF 2311 or 2312
Ferae - Viverravidae	Didymictis sp.¹ Didymictis sp.¹ Cope 1875 placental
Tribosphenida - Phenacodontidae	Copecion brachypternus¹, Meniscotherium chamense, Meniscotherium tapiacitum Copecion brachypternus¹ Cope 1882 condylarth Meniscotherium chamense Cope 1874 condylarth at MQ DUPLICATE REF 2311 or 2312 Meniscotherium tapiacitum Cope 1882 condylarth DUPLICATE REF 2311 or 2312
Perissodactyla -	Systemodon tapirinus¹ Systemodon tapirinus¹ Cope 1875 odd-toed ungulate
Perissodactyla - Equidae	Eohippus angustidens⁵, Xenicohippus osborni⁵ Eohippus angustidens⁵ Cope 1875 horse possibly includes H. sp. material from MQ DUPLICATE REF 2311 or 2312 Xenicohippus osborni⁵ Bown and Kihm 1981 horse DUPLICATE REF 2311 or 2312
Artiodactyla - Diacodexeidae	Diacodexis cf. metsiacus⁷, Simpsonodus chacensis¹, Bunophorus grangeri Diacodexis cf. metsiacus⁷ Cope 1882 even-toed ungulate CM 1025 Simpsonodus chacensis¹ Cope 1875 even-toed ungulate 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
Taeniodonta - Stylinodontidae	Ectoganus gliriformis Ectoganus gliriformis Cope 1874 taeniodont DUPLICATE REF 2311 or 2312

¹Alroy 2002; ²Beard 1988; ³Bown and Schankler 1982; ⁴Denison 1938; ⁵Froehlich 2002; ⁶Korth 1984; ⁷Krishtalka and Stucky 1986; ⁸Redline 1997