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

Mammalia
 Microbiotheria - Microbiotheriidae
Microbiotherium patagonicum5 Ameghino 1887 marsupial
MACN 5719, dentary m4; MACN 5718, dentary m2-3 (both syntypes of _Halmarhiphus didelphoides_)
 Paucituberculata - Abderitidae
Abderites meridionalis1 Ameghino 1887 marsupial
MACN-A 5541, dentary p3-m4; PU 15079, dentary p3-m3
 Paucituberculata - Palaeothentidae
Acdestis oweni3 Ameghino 1887 marsupial
Palaeothentes intermedius1 Ameghino 1887 marsupial
Palaeothentes aratae1 Moreno 1882 marsupial
Palaeothentes lemoinei1 Ameghino 1887 marsupial
 Paucituberculata - Pichipilidae
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
 Sparassodonta -
Cladosictis patagonica4, "Sipalocyon gracilis" = Sipalocyon gracilis4, "Protoproviverra manzaniana n. sp." = Sipalocyon gracilis4, "Ictioborus destructor n. sp." = Acyon tricuspidatus4
Cladosictis patagonica4 Ameghino 1887 metatherian
MACN 681, dentary
"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
 Sparassodonta - Borhyaenidae
Acrocyon sectorius6 Ameghino 1887 metatherian
MACN-A 9364-9385
 Cingulata - Chlamyphoridae
Prozaedyus proximus8 Ameghino 1887 edentate
MACN-A 4865, partial carapace
Prozaedyus exilis8 Ameghino 1887 edentate
MACN-A 4814–4863, mandible, carapace fragment, postcrania
 Cingulata - Peltephilidae
Peltephilus giganteus8 Ameghino 1894 edentate
MACN-A 4891–4900, osteoderms
Peltephilus ferox8 Ameghino 1891 edentate
MACN-A 4902–4918, skull and osteoderms
 Rodentia - Chinchillidae
Prolagostomus sp.7 Ameghino 1887 chinchilid
Aves
 Gruiformes - Phorusrhacidae
Phorusrhacos longissimus2 Ameghino 1887 terror bird