Monte Hermoso (Neogene of Argentina)

Where: Buenos Aires, Argentina (38.0° S, 61.0° W: paleocoordinates 38.1° S, 59.6° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Monte Hermoso Formation, Montehermosan (6.8 - 4.0 Ma)

• Marine cliffs

•Quattrocchio et al. 2009: Monte Hermoso, the red earth cliffs near Punta Alta

• member-level stratigraphic resolution

Environment/lithology: terrestrial; siltstone

Size classes: macrofossils, mesofossils

Collected by Darwin and others in 1833 and others

• Type: left-lower premolar-molar

•Paratype: Fragment of left mandible with incisor alveolus

Primary reference: R. Pascual and P. Bondesio. 1961. Un nuevo Cardiatheriinae (Rodentia, Hydrochoeridae) de la Formacion Monte Hermoso (Pliocene Superior) de la Provincia de Buenos Aires. Algunas consideraciones sobre la evolucion morfolofica de los Molariformes de los Cardiatheriinae. Ameghiniana 2(6):93-109 [J. Alroy/J. Wertheim/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13503: authorized by John Alroy, entered by Jill Wertheim on 09.04.2002, edited by Mark Uhen, Juan Carrillo, Richard Hulbert, Jelle Zijlstra, Evangelos Vlachos, Miranta Kouvari and Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

• Fernicola, et al. 2009: Darwin visited this locality on the 19th Oct 1833
unclassified
  -
Mammalia
 Didelphimorphia - Didelphidae
Sparassocynus bahiai11 Mercerat 1898 opossum
Hyperdidelphys sp.6 Ameghino 1904 opossum
MMH 86-5-1, mandibular fragment
Hyperdidelphys parvula6 Ameghino 1904 opossum
Holotype: MACN 7920 maxilla fragment; MLP 46-V-13-81, cranial and vertebral fragments;
Hyperdidelphys inexpectata6 Ameghino 1889 opossum
Holotype: MACN 1615 mandibular fragment; MACN 11654 mandibular fragment, MACN 7949mandibular fragment, MACN 421-Amandibular fragment, MACN 7939mandibular fragment, MACN 7940mandibular fragment, MACN 7951mandibular fragment, MACN 7948 mandibular fragment, MMP 21 10-M palatal fragment, MACN 7950 cranial fragment
 Sparassodonta -
Notocynus hermosicus n. gen. n. sp.7
Notocynus hermosicus n. gen. n. sp.7 Mercerat 1891 metatherian
MLP 11-91, dentary m3, holotype
 Notoungulata - Haplodontheriidae
Trigodon gaudryi9 Ameghino 1887 notoungulate
 Theriamorpha - Myrmecophagidae
Nunezia caroloameghinoi n. gen. n. sp.8
Nunezia caroloameghinoi n. gen. n. sp.8 Kraglievich 1934 giant anteater
MACN 6125, left third metacarpal
 Cingulata - Dasypodidae
Dasypotherium australis n. gen. n. sp.9
Dasypotherium australis n. gen. n. sp.9 Moreno 1889 armadillo
 Carnivora - Procyonidae
Parahyaenodon argentinus5 Ameghino 1904 procyonid carnivore
 Rodentia - Caviidae
Hydrochoerus sp.4 Brisson 1762 capybara
found by Darwin
 Rodentia - Hydrochoeridae
Phugatherium cataclysticum4, Anchimysops villalobosi4, "Chapalmatherium perturbidum" = Phugatherium cataclisticum4, "Neoanchimys pisanoi n. gen. n. sp." = Phugatherium cataclisticum
Anchimysops villalobosi4 Kraglievich 1927 caviomorph
"Chapalmatherium perturbidum" = Phugatherium cataclisticum4 Ameghino 1887 caviomorph
"Neoanchimys pisanoi n. gen. n. sp." = Phugatherium cataclisticum Ameghino 1887 caviomorph
 Rodentia - Ctenomyidae
Ctenomys priscus4 Owen 1840 caviomorph
found by Darwin
Aves
 Gruiformes - Hermosiornithidae
Mesembriornis milneedwardsi n. gen. n. sp.9 Moreno 1889 bird
Palaeociconia australis n. sp.9 Moreno 1889 bird
 Cathartiformes - Cathartidae
Dryornis pampeanus n. gen. n. sp.10
Dryornis pampeanus n. gen. n. sp.10 Moreno and Mercerat 1891 New World vulture
 Rheiformes - Rheidae
Protorhea azarae n. gen. n. sp.10
Protorhea azarae n. gen. n. sp.10 Moreno and Mercerat 1891 rhea
 Tinamiformes - Tinamidae
Tinamisornis intermedius3 Rovereto 1914 tinamou
=Roveretornis intermedius Brodkorb 1961
Tinamisornis parvulus3 Rovereto 1914 tinamou
 Falconiformes - Falconidae
Foetopterus ambiguus n. gen. n. sp.10
Foetopterus ambiguus n. gen. n. sp.10 Moreno and Mercerat 1891 raptor
Reptilia
 Testudines - Testudinidae
"Testudo australis n. sp." = Chelonoidis australis9, "Testudo praestans n. sp." = Chelonoidis australis12, "Chelonoidis santafecina n. sp." = Chelonoidis australis1, Testudo formosa n. sp.9
"Testudo australis n. sp." = Chelonoidis australis9 Moreno 1889 turtle
MLP 26-400
"Testudo praestans n. sp." = Chelonoidis australis12 Moreno 1889 turtle
MACN 5195, partial shell
"Chelonoidis santafecina n. sp." = Chelonoidis australis1 Moreno 1889 turtle
Testudo formosa n. sp.9 Moreno 1889 turtle
MLP, probably lost
Pisces
  -
"Pisces indet." = Osteichthyes9
"Pisces indet." = Osteichthyes9 Huxley 1880 bony fish
Tetrapromotho argentinus
  -
Tetrapromotho argentinus n. gen. n. sp.2
Tetrapromotho argentinus n. gen. n. sp.2 Ameghino 1907