CTA-43 (Miocene of Peru)

Also known as Contamana locus n. 43

Where: Peru (7.4° S, 75.0° W: paleocoordinates 7.8° S, 73.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Mayoan mammal zone, Pebas Formation, Tortonian (11.6 - 7.2 Ma)

• Mayoan SALMA

•Marivaux, et al. 2016: earliest late Miocene (i.e., Mayoan SALMA), based on biochronological data

•Marivaux, et al. 2016: CTA-43 indicate an earliest late Miocene age ($11 Ma; Mayoan South American Land Mam- mal Age [SALMA]) for this locality (Antoine et al., 2016, in press

Environment/lithology: coastal; lithology not reported

• Tidal interface

Size class: mesofossils

Collected in 2016

• Marivaux, et al. 2016: the fossils are in the collections of the Vertebrate Paleontology Department of the “Museo de Historia Natural—Universidad Nacional Mayor San Marcos” (MUSM), in Lima, Peru

Primary reference: P. Antoine, M. A. Abello, S. Adnet, A. J. A. Sierra, P. Baby, G. Billet, M. Boivin, Y. Calderón, A. Candela, J. Chabain, and F. Corfu. 2016. A 60-million-year Cenozoic history of western Amazonian ecosystems in Contamana, eastern Peru. Gondwana Research 31:30-59 [J. Zijlstra/J. Zijlstra/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 176133: authorized by Jelle Zijlstra, entered by Jelle Zijlstra on 29.01.2016, edited by Miranta Kouvari

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Serrasalminae "pacu-like"
"hundreds of teeth"
? Marmosidae indet.
"lower right molar"
Spermatophyta indet.
"Fossil wood (ligniteous), including large float chips"; "Seeds and fruits (palm trees),"
Bivalvia
 Pholadida - Corbulidae
Pachydon cuneatus Conrad 1871 clam
Malacostraca
 Decapoda - Trichodactylidae
Trichodactylidae indet. Milne-Edwards 1853 crab
Chondrichthyes
 Myliobatiformes - Myliobatidae
Rhinoptera sp. Cuvier 1829 cownose ray
teeth
 Myliobatiformes - Potamotrygonidae
Potamotrygon cf. motoro stingray
"same as in CTA-44"
Potamotrygon sp. Garman 1877 stingray
"same as in CTA-44"
 Myliobatiformes - Dasyatidae
Dasyatidae indet. Jordan 1888 whiptail stingray
 Rhinopristiformes - Pristidae
Pristis sp. Linck 1790 sawfish
"oral teeth"
Mammalia
 Rodentia - Dinomyidae
Potamarchus sp. Burmeister 1885 caviomorph
"left M1-2"
Eumegamyinae indet. Kraglievich 1926 caviomorph
"broken upper tooth"
 Rodentia - Caviidae
Caviinae indet. Gray 1821 caviomorph
"same taxon as in CTA-44 Top"
 Rodentia -
? Steiromys sp. Ameghino 1887 caviomorph
"m1-2"
Octodontoidea indet. Waterhouse 1839 caviomorph
"some jugal teeth and 2 small incisors"
Acarechimys sp. Patterson 1965 caviomorph
"several jugal teeth"
 Primates - Cebidae
Cebus sp. Erxleben 1777 capuchin monkey
MUSM-3243
Cebuella sp. Gray 1865 pygmy marmoset
MUSM-3239-3242
 Theriamorpha -
"Ungulata indet." = Euungulata
"Ungulata indet." = Euungulata Waddell et al. 2001 placental
"enamel fragments"
 Cingulata - Pachyarmatheriidae
Neoglyptatelus sp. Carlini et al. 1997 edentate
"pentagonal scute"
 Cingulata - Pampatheriidae
cf. Scirrotherium sp. Edmund and Theodor 1997 edentate
fragmentary scute
 Cingulata - Dasypodidae
Dasypodidae indet. Gray 1821 armadillo
fragmentary scute
 Theriamorpha -
Mylodontoidea indet. Gill 1872 edentate
"second phalanx, small"
 Marsupialia -
Didelphimorphia indet. Gill 1872 marsupial
"large (lower molar fragment)"
 Polydolopimorphia - Argyrolagidae
Argyrolagidae indet. Ameghino 1904 metatherian
m2 or m3
Reptilia
 Testudines - Podocnemididae
Podocnemis sp. Wagler 1830 river turtle
"complete skull, plates and cervical vertebra"
 Testudines -
"Chelonia indet." = Testudines
"Chelonia indet." = Testudines Batsch 1788 turtle
"shell fragments"
 Squamata -
Booidea indet. Gray 1825 snake
vertebra
 Crocodylia -
Gavialoidea indet. crocodilian
"several teeth and fragments"
 Crocodylia - Alligatoridae
Caimaninae indet. Brochu 1999 crocodilian
"teeth and fragments"
Actinopteri
 Teleostei -
 Characiformes - Anostomidae
Leporinus sp. Lundberg 1997
"ca. 15 teeth"
 Characiformes - Cynodontidae
cf. Hydrolycus sp. Lundberg 1997
"several teeth"
 Siluriformes - Loricariidae
Loricariidae indet. Gill 1872 catfish
"muffel-like teeth"