PBDB Collection

Barrancas del Río Santa Cruz: Santacrucian, Argentina
collected by C. Ameghino

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

Mammalia - Microbiotheria - Microbiotheriidae

	Microbiotherium patagonicum n. gen., n. sp. Ameghino 1887	Marshall 1982	1 specimen
	MLP 11-30, right dentary m1-4

	Microbiotherium tehuelchum Ameghino 1887	Marshall 1982
	Original type series, now lost
Mammalia - Sparassodonta

	Cladosictis patagonica n. gen., n. sp. Ameghino 1887	Marshall 1981	1 specimen
	MLP 11-103, left maxillary fragment with M3-4

	Agustylus cynoides n. sp. Ameghino 1887	Marshall 1981	1 specimen
	synonym of Cladosictis patagonica
	MLP 11-78, dentary p2

	Acyon tricuspidatus Ameghino 1887	Prevosti et al. 2012

	Sipalocyon gracilis Ameghino 1887	Marshall 1981	1 specimen
	MLP 11-25, dentary p3, m2-4

	Hathliacynus lynchi n. sp. Mercerat 1891	Marshall 1981	1 specimen
	synonym of Sipalocyon gracilis
	MLP 11-7, dentary m1-4

	Acrocyon sectorius Ameghino 1887	Prevosti et al. 2012
	MLP 11-70

	Borhyaena tuberata Ameghino 1887	Prevosti et al. 2012

	Lycopsis torresi n. gen., n. sp. Cabrera 1927	Marshall 1979	1 specimen
	MLP 11-113, partial skull, holotype
Mammalia - Notoungulata - Toxodontidae

	Protoxodon marmoratus n. sp. Ameghino 1887	Cassini et al. 2012
	synonym of Nesodon imbricatus
	MLP 12-250, mandible
Mammalia - Notoungulata - Interatheriidae

	Protypotherium claudum Ameghino 1889	Fernández et al. 2023
Mammalia - Cingulata

	Peltephilus strepens Ameghino 1887	Vizcaíno et al. 2012
	MACN-A 771, osteoderms

	Peltephilus pumilus Ameghino 1887	Vizcaíno et al. 2012
	MACN-A 866–870, osteoderms
Mammalia

	Stegotherium simplex (Ameghino 1887)	Fernicola and Vizcaino 2008

	Stegotherium tessellatum (Ameghino 1887)	Vizcaíno et al. 2012
	original and current combination Stegotherium tesselatum
	MACN-A 781–785, osteoderms
Mammalia - Rodentia - Octodontidae

	Sciamys sp. Ameghino 1887	Carvalho and Salles 2004
	MLP 63-XII-19–126, MLP 63- XII-19–127, MLP 63-XII-19–130 and MLP 15–24 (lectotype of S. varians), MLP 15–25, MLP 15–146 (lectotype of S. principalis), MLP 15–197, MLP 15– 218, MLP 15–222, MLP 15–349 and MLP 15–352

	Sciamys latidens	McGrath et al. 2023

	Sciamys principalis Ameghino 1887	Arnal and Vucetich 2011
	MLP 63-XII-19-127, mandible
Mammalia - Rodentia

	Stichomys sp. Ameghino 1887	Carvalho and Salles 2004
	MLP 15–144, MLP 15–199, MLP 15–209, MLP 15–210, MLP 15–211, MLP 15– 212, MLP 15–230a, MLP 15–283 (lectotype of S. regularis), MLP 15–311, MLP 15–320, MLP 15– 338, MLP 15–340, MLP 15–348, MLP 15–351a, MLP 15–351b, MLP 15–374, MLP 52-IX-27–21, MLP 63- XII-19–25/29, MLP 63-XII-19–109, MLP 63-XII-19– 111, MLP 63-XII-19–112 and MLP 63-XII-19–113

	Stichomys regularis Ameghino 1887	McGrath et al. 2023

	Acaremys minutus Ameghino 1887	Arnal et al. 2017
	synonym of Acarechimys gracilis
	MLP 15-410a (syntype of Acaremys minutus)

	Acarechimys minutissimus Ameghino 1887	Arnal et al. 2017
	MLP 15-188 (syntype of Acaremys minutissimus)
Mammalia - Rodentia - Acaremyidae

	Pseudoacaremys kramarzi Arnal and Vucetich 2015	Arnal and Vucetich 2015	1 specimen
	MLP 15-197a, maxilla P4-M1

	Acaremys murinus Ameghino 1887	Arnal and Vucetich 2015	3 specimens
	MACN A 249, 266, MLP 15-410

	Acaremys tricarinatus Ameghino 1894	Arnal and Vucetich 2015	1 specimen
	MLP 15-24

	Acaremys messor n. sp. Ameghino 1889	Arnal and Vucetich 2015	1 specimen
	MACN A 4106, mandible dp4-m3, holotype
Mammalia - Rodentia

	Adelphomys sp. Ameghino 1887	Carvalho and Salles 2004
	MLP 15–183, MLP 15–221, MLP 15–216 (lectotype of A. candidus), MLP 15–300, MLP 63-XII-19–104, MLP 63-XII-19–105, MLP 63- XII-19–107 and MLP 63-XII-19–108

	Adelphomys candidus Ameghino 1887	McGrath et al. 2023

	Spaniomys sp. Ameghino 1877	Carvalho and Salles 2004
	MLP 15–19 (paratype of S. riparius), MLP 15–58a, MLP 15–80 (paratype of S. riparius), MLP 15–211, MLP 15–297, MLP 15–301, MLP 15–318, MLP 15–321, MLP 15–322, MLP 15– 324, MLP 15–351, MLP 15–401, MLP 15–402, MLP 61-VIII-3–408, MLP 62-XII-19–119, MLP 63-XII-19– 72, MLP 63-XII-19–73, MLP 63-XII-19–74, MLP 63- XII-19–75, MLP 63-XII-19–76, MLP 63-XII-19–78, MLP 63-XII-19–82 and MLP 63-XII-19–95

	Spaniomys modestus Ameghino 1887	McGrath et al. 2023

	Spaniomys riparius Ameghino 1887	McGrath et al. 2023
Mammalia - Rodentia - Abrocomidae

	Stichomys constans Ameghino 1887	Arnal et al. 2017
	recombined as Ameghinomys constans
	MLP 15-200 (syntype of Stichomys constans) MLP 15-39 (syntype of Stichomys constans)

	Acarechimys constans (Ameghino 1887)	Arnal et al. 2017
	recombined as Ameghinomys constans
	MLP 15-319 MPM-PV 17430 MPM-PV 17431 MPM-PV 17432 MPM-PV 17433 MPM-PV 17434 MPM-PV 17439 MLP 15-188a MLP 15-398 MLP 15-408 MPM-PV 15098
Mammalia - Rodentia

	Eocardia montana Ameghino 1887	McGrath et al. 2023

	Eocardia excavata Ameghino 1891	McGrath et al. 2023

	Neoreomys australis Ameghino 1887	McGrath et al. 2023
Mammalia - Rodentia - Eocardiidae

	Eocardia fissa Ameghino 1891	McGrath et al. 2023
	recombined as Dicardia fissa

	Phanomys vetulus n. sp. Ameghino 1891	Pérez and Vucetich 2011	9 specimens
	MACN A 2024

	Phanomys mixtus n. gen., n. sp. Ameghino 1887	Pérez and Vucetich 2011	10 specimens
	MACN A 11302, maxilla fragment, "lectotype"; MACN A 2022, isolated cheek teeth, "neosyntype"

	Schistomys erro Ameghino 1887	McGrath et al. 2023
Mammalia - Rodentia - Chinchillidae

	Prolagostomus pusillus Ameghino 1887	McGrath et al. 2023

	Pliolagostomus notatus n. sp. Ameghino 1887	Vucetich 1984
	Holotype: MLP 15-18 and other MLP specimens
Mammalia - Rodentia

	Steiromys detentus Ameghino 1887	McGrath et al. 2023

	Steiromys duplicatus Ameghino 1887	McGrath et al. 2023
Mammalia - Rodentia - Neoepiblemidae

	Perimys erutus Ameghino 1887	McGrath et al. 2023

	Perimys onustus Ameghino 1887	McGrath et al. 2023

	Perimys incavatus Ameghino 1902	McGrath et al. 2023

	Perimys zonatus (Ameghino 1887)	McGrath et al. 2023
Mammalia - Rodentia - Dinomyidae

	Scleromys angustus Ameghino 1887	McGrath et al. 2023
Mammalia - Primates - Homunculidae

	Ecphantodon ceboides Mercerat 1891	Kay and Perry 2019
	synonym of Homunculus patagonicus
see common names

Geography

Country:	Argentina	State/province:	Santa Cruz
Coordinates:	50.1° South, 70.4° West (view map)
Paleocoordinates:	50.7° South, 64.8° West
Basis of coordinate:	based on political unit
Geographic resolution:	local area

Time

Period:	Neogene	Epoch:	Miocene
Stage:	Burdigalian	10 m.y. bin:	Cenozoic 5
Key time interval:	Santacrucian
Age range of interval:	17.40000 - 16.20000 m.y. ago

Stratigraphy

Formation:	Santa Cruz
Stratigraphic resolution:	formation

Lithology and environment

Primary lithology:	not reported
Environment:	terrestrial indet.

Taphonomy

Modes of preservation:	body
Size of fossils:	mesofossils

Collection methods and comments

Reason for describing collection:	paleoecologic analysis
Collectors:	C. Ameghino

Metadata

Also known as:

Río Santa Cruz

Database number:

176593

Authorizer:

J. Zijlstra, P. Mannion, J. Carrillo

Enterer:

J. Zijlstra, G. Varnham, M. Kouvari, K. Pino

Modifier:

M. Kouvari

Research group:

vertebrate

Subset of collection #:

27313

Collections that are a subset of this one:

176623, 176624, 176625, 210786, 210787

Created:

2016-02-17 22:43:52

Last modified:

2020-11-30 06:41:12

Access level:

the public

Released:

2016-02-17 22:43:52

Creative Commons license:

CC BY

Reference information

Primary reference:

58167.

S. F. Vizcaíno, R. F. Kay, and M. S. Bargo. 2012. Background for a paleoecological study of the Santa Cruz Formation (late Early Miocene) on the Atlantic Coast of Patagonia. In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 1-22 [J. Zijlstra/J. Zijlstra/J. Zijlstra]

Secondary references:

58179		M. A. Abello, E. Ortiz-Jaureguizar, and A. M. Candela. 2012. Paleoecology of the Paucituberculata and Microbiotheria (Mammalia, Marsupialia) from the late Early Miocene of Argentina. In S. F. VizcaÃno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 156-172 [J. Zijlstra/J. Zijlstra]
69225		M. Arnal and M. G. Vucetich. 2011. First record of supernumerary teeth in South American fossil rodents. Journal of Vertebrate Paleontology 31(4):925-927 [P. Mannion/G. Varnham]
58126		M. Arnal and M. Vucetich. 2015. Revision of the fossil rodent Acaremys Ameghino, 1887 (Hystricognathi, Octodontoidea, Acaremyidae) from the Miocene of Patagonia (Argentina) and the description of a new acaremyid. Historical Biology 27(1):42-59 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
72683		M. Arnal, M. G. Vucetich, D. A. Croft, M. S. Bargo, J. C. Fernícola and S. F. Viscaino. 2017. Systematic revision and evolutionary history of Acarechimys Patterson in Kraglievich 1965 (Rodentia, Caviomorpha, Octodontoidea). Ameghiniana 54(3):307-330 [P. Mannion/M. Kouvari]
71634		G. S. Carvalho and L. O. Salles. 2004. Relationships among extant and fossil echimyids (Rodentia: Hystricognathi). Zoological Journal of the Linnean Society 142:445-477 [P. Mannion/M. Kouvari/M. Kouvari]
58224		G. H. Cassini, E. Cerdeño, A. L. Villafañe and N. A. Muñoz. 2012. Paleobiology of Santacrucian native ungulates (Meridiungulata: Astrapotheria, Litoptera and Notoungulata). In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 243-286 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
85306		M. Fernández, J. C. Fernicola, and E. Cerdeño. 2023. Systematic revision of the species of Protypotherium (Notoungulata: Interatheriidae) from the Santa Cruz Formation (Early–Middle Miocene), Argentinian Patagonia: a new phylogenetic hypothesis for the Interatheriidae. Zoological Journal of the Linnean Society zlad043:1-28 [J. Carrillo/K. Pino]
70891		J. C. Fernicola and S. F. Vizcaino. 2008. Revision del genero Stegotherium Ameghino, 1887 (Mammalia, Xenarthra, Dasypodidae). Ameghiniana 45(2):321-332 [P. Mannion/M. Kouvari]
72898		R. F. Kay and J. M. G. Perry. 2019. New Primates From the Río Santa Cruz and Río Bote (Early-Middle Miocene), Santa Cruz Province, Argentina. Publicación Electrónica de la Asociación Paleontológica Argentina 19(2):230-238 [P. Mannion/M. Kouvari/E. Vlachos]
46083		A. G. Kramarz. 2006. Eocardiids (Rodentia, Hystricognathi) from the Pinturas Formation, Late early Miocene of Patagonia, Argentina. Journal of Vertebrate Paleontology 26(3):770-778 [C. Jaramillo/J. Carrillo]
57760		L. Marshall. 1982. Systematics of the South American marsupial family Microbiotheriidae. Fieldiana Geology 10:1-75 [J. Zijlstra/J. Zijlstra]
58324		L. G. Marshall. 1979. Review of the Prothylacyninae, an extinct subfamily of South American "dog-like" marsupials. Fieldiana Geology 3:1-50 [J. Zijlstra/J. Zijlstra]
58306		L. G. Marshall. 1981. Review of the Hathlyacyninae, an extinct subfamily of South American "dog-like" marsupials. Fieldiana Geology 7:1-120 [J. Zijlstra/J. Zijlstra]
85330		A. J. McGrath, J. J. Flynn, D. A. Croft, J. Chick, H. E. Dodson and A. R. Wyss. 2023. Caviomorphs (Rodentia, Hystricognathi) from Pampa Castillo, Chile: new octodontoid records and biochronological implications. Papers in Palaeontology 9:e1477:1-32 [J. Carrillo/K. Pino/P. Mannion]
58197		M. E. Pérez and M. G. Vucetich. 2011. A revision of the fossil genus Phanomys Ameghino, 1887 (Rodentia, Hystricognathi, Cavioidea) from the early Miocene of Patagonia (Argentina) and the acquisition of euhypsodonty in Cavioidea sensu stricto. Paläontologische Zeitschrift 86(2):187-204 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
58202		F. J. Prevosti, A. M. Forasiepi, M. D. Ercoli and G. F. Turazzini. 2012. Paleoecology of the mammalian carnivores (Metatheria, Sparassodonta) of the Santa Cruz Formation (late Early Miocene). In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 173-193 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
58206		S. F. Vizcaíno, J. C. Fernicola, and M. S. Bargo. 2012. Paleobiology of Santacrucian glyptodonts and armadillos (Xenarthra, Cingulata). In S. F. Vizcaíno, R. F. Kay, M. S. Bargo (eds.), Early Miocene Paleobiology in Patagonia: High-Latitude Paleocommunities of the Santa Cruz Formation 194-215 [J. Zijlstra/J. Zijlstra/J. Zijlstra]
71564		M. G. Vucetich. 1984. Los roedores de la Edad Friasense (Mioceno medio) de Patagonia. Revista del Museo de la Plata (Nuova serie) Paleontologia 50(8):47-126 [P. Mannion/M. Kouvari]