PBDB Collection

Shehuén (Miocene of Argentina)

Also known as Río Sehuén, Río Chalía

Where: Santa Cruz, Argentina (48.5° S, 69.7° W: paleocoordinates 49.1° S, 64.2° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Santa Cruz Formation, Santacrucian (17.5 - 16.3 Ma)

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Collected by C. Ameghino

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 176594: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 17.02.2016, edited by Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Mammalia
Paucituberculata - Abderitidae	Abderites meridionalis¹ Abderites meridionalis¹ Ameghino 1887 marsupial MACN-A 5541, dentary p3-m4; PU 15079, dentary p3-m3
Paucituberculata - Palaeothentidae	Acdestis oweni³, Palaeothentes lemoinei¹, Palaeothentes intermedius¹, Palaeothentes aratae¹ Acdestis oweni³ Ameghino 1887 marsupial Palaeothentes lemoinei¹ Ameghino 1887 marsupial Palaeothentes intermedius¹ Ameghino 1887 marsupial Palaeothentes aratae¹ Moreno 1882 marsupial
Paucituberculata - Pichipilidae	Phonocdromus gracilis⁵ Phonocdromus gracilis⁵ Ameghino 1894 marsupial MACN 5707, dentary m2-4
Paucituberculata - Caenolestidae	"Stilotherium dissimile" = Stilotherium dissimile⁵, "Garzonia captiva n. sp." = Stilotherium dissimile⁵ "Stilotherium dissimile" = Stilotherium dissimile⁵ Ameghino 1887 marsupial MACN 5708, dentary m3; 5717, dentary p3, m2-3 "Garzonia captiva n. sp." = Stilotherium dissimile⁵ Ameghino 1887 marsupial MACN 5706, dentary p3-m2
Microbiotheria - Microbiotheriidae	Microbiotherium patagonicum⁵ Microbiotherium patagonicum⁵ Ameghino 1887 marsupial MACN 5719, dentary m4; MACN 5718, dentary m2-3 (both syntypes of _Halmarhiphus didelphoides_)
Sparassodonta -	"Sipalocyon gracilis" = Sipalocyon gracilis⁴, "Protoproviverra manzaniana n. sp." = Sipalocyon gracilis⁴, "Ictioborus destructor n. sp." = Acyon tricuspidatus⁴, Cladosictis patagonica⁴ "Sipalocyon gracilis" = Sipalocyon gracilis⁴ Ameghino 1887 metatherian MACN 648, dentary p3 "Protoproviverra manzaniana n. sp." = Sipalocyon gracilis⁴ Ameghino 1887 metatherian MACN 691, left and right dentary with complete dentition; MACN 692, left maxillary and premaxillary with dentition; MACN 693–703, postcrania; all associated "Ictioborus destructor n. sp." = Acyon tricuspidatus⁴ Ameghino 1887 metatherian MACN 5988, dentary m1-2, holotype Cladosictis patagonica⁴ Ameghino 1887 metatherian MACN 681, dentary
Sparassodonta - Borhyaenidae	Acrocyon sectorius⁶ Acrocyon sectorius⁶ Ameghino 1887 metatherian MACN-A 9364-9385
Rodentia - Chinchillidae	Prolagostomus sp.⁷ Prolagostomus sp.⁷ Ameghino 1887 chinchilid
Cingulata - Peltephilidae	Peltephilus ferox⁸, Peltephilus giganteus⁸ Peltephilus ferox⁸ Ameghino 1891 edentate MACN-A 4902–4918, skull and osteoderms Peltephilus giganteus⁸ Ameghino 1894 edentate MACN-A 4891–4900, osteoderms
Cingulata - Chlamyphoridae	Prozaedyus exilis⁸, Prozaedyus proximus⁸ Prozaedyus exilis⁸ Ameghino 1887 edentate MACN-A 4814–4863, mandible, carapace fragment, postcrania Prozaedyus proximus⁸ Ameghino 1887 edentate MACN-A 4865, partial carapace
Aves
Gruiformes - Phorusrhacidae	Phorusrhacos longissimus² Phorusrhacos longissimus² Ameghino 1887 terror bird

¹Abello et al. 2012; ²Alvarenga and Holfing 2003; ³Bown and Fleagle 1993; ⁴Marshall 1981; ⁵Marshall 1982; ⁶Prevosti et al. 2012; ⁷Vizcaíno et al. 2021; ⁸Vizcaíno et al. 2012