Divisadero Largo (Eocene of Argentina)

Also known as Divisadero Hill

Where: Mendoza, Argentina (32.9° S, 68.9° W: paleocoordinates 35.2° S, 60.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Divisadero Largo Formation, Divisaderan (42.0 - 36.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by E. Rolleri; reposited in the MLP

Primary reference: G. G. Simpson, J. L. Minoprio, and B. Patterson. 1962. The mammalian fauna of the Divisadero Largo Formation, Mendoza, Argentina. Bulletin of the Museum of Comparative Zoology 127(4):239-293 [J. Zijlstra/J. Zijlstra]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 92669: authorized by John Alroy, entered by John Alroy on 23.11.2009, edited by Jelle Zijlstra and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Astrapotheria - Trigonostylopidae
Trigonostylops sp.1 Ameghino 1897 placental
 Placentalia -
? Notoungulata indet. Roth 1903 notoungulate
MACN 16610, mandible p3-m2, previously assigned tentatively to Interatheriidae
 Notoungulata -
Allalmeia atalaensis n. gen. n. sp.
Allalmeia atalaensis n. gen. n. sp. Rusconi 1946 notoungulate
MNHM 507 PV, partial skull and skeleton; MLP 45-VII-10-9, mandible left c-m1, right p3-m3; MLP 45-VII-10-10, maxilla P3-M3; MLP 45-VII-10-16, maxilla P2-M3; MLP 49-XI-21-21, maxilla M3 partial M2; MCZ 7412, maxilla M1-2, partial M3; MNHM 3009 PV, skull and jaws
 Notoungulata - Henricosborniidae
Acamana ambiguus n. gen. n. sp.
Acamana ambiguus n. gen. n. sp. Simpson et al. 1962 notoungulate
MNHM 3010 PV, partial skull
 Notoungulata - Oldfieldthomasiidae
Brachystephanus postremus n. gen. n. sp., Xenostephanus chiottii n. gen. n. sp.
Brachystephanus postremus n. gen. n. sp. Simpson et al. 1962 notoungulate
AMNH 45946, skull; AMNH 45945, skull; AMNH 45940, P3-M3; AMNH 45941, P2-M2; AMNH 45942, P3-M2; AMNH 45943, P3-M3; AMNH 45944, P3-M2; MCZ 7408, p4-m2; MCZ 7406, m1-3; MCZ 7409, P2-M3; MCZ 7410, M1-2; MCZ 7411, m2-3; MCZ 7413, m1; MLP 49-XI-21-16, skull; MLP 49-XI-21-22, P2-M3; MLP 45-VII-10-12, partial skull; MNHM 3006 PV, P3-M2; MNHM 3007 PV, M2-3
Xenostephanus chiottii n. gen. n. sp. Simpson et al. 1962 notoungulate
AMNH 45947, skull; AMNH 45948, c-m3; MLP 49-XI-21-20, m2-3; MCZ 7415, jaw fragments with P4-M1; MHNM 3008 PV, skull and P4-M3
 Panameriungulata - Adianthidae
Adiantoides leali n. gen. n. sp.
Adiantoides leali n. gen. n. sp. Simpson and Minoprio 1949 placental
MNHM 3004 PV, skull
 Panameriungulata - Proterotheriidae
Phoradiadius divortiensis n. gen. n. sp. Simpson et al. 1962 placental
MACN 18.061, maxilla M2-3, holotype; MCZ 7407, maxilla M3; MCZ 7416, dentary m2; MNHM 3005 PV, dentary m3; AMNH 45932, mandible i3, p2-4; AMNH 45933, dentary m3; AMNH 45931, maxilla ?dP3-4, ?M1; AMNH 45930, maxilla P3-M3
 Allotheria -
Groeberia minoprioi n. gen. n. sp., Groeberia pattersoni n. sp.2
Groeberia minoprioi n. gen. n. sp. Patterson 1952 mammal
MMMP 738, holotype, mandible
Groeberia pattersoni n. sp.2 Simpson 1970 mammal
Reptilia
 Loricata - Sebecidae
Ilchunaia parva n. gen. n. sp.2 Rusconi 1946 crocodilian
Barinasuchus sp.3 Paolillo and Linares 2007 crocodilian
MLP 73-III-15-1 (premaxilla joined with anterior part of the mandible)
 Loricata -
Cunampaia simplex n. gen. n. sp.2
Cunampaia simplex n. gen. n. sp.2 Rusconi 1946 crocodilian