Shapaja (TAR-22) (Oligocene of Peru)

Also known as TAR 22

Where: Peru (6.6° S, 76.3° W: paleocoordinates 8.7° S, 69.9° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Tinguirirican mammal zone, Pozo Shale Member (Pozo Formation), Early/Lower Oligocene (33.9 - 28.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; conglomerate

• fluvial micro-conglomeratic lenses intercalated with floodplain fine deposits

•Gypsum-rich blue clays with calcareous nodules within a coarse-grained sandstone channel

Size classes: macrofossils, mesofossils

Primary reference: M. Boivin, L. Marivaux, F. Pujos, R. Salas-Gismondi, J. V. Tejada-Lara, R. M. Varas-Malca, and P.-O. Antoine. 2018. Early Oligocene caviomorph rodents from Shapaja, Peruvian Amazonia. Palaeontographica Abteilung A 311(1-6):87-156 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 199563: authorized by Philip Mannion, entered by Philip Mannion on 31.01.2019, edited by Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Magnoliopsida
  -
Magnoliopsida indet. Cronquist et al. 1996
Charophyceae
  -
Charophyceae indet. Smith 1938
oogonia
Malacostraca
 Decapoda - Trichodactylidae
Trichodactylidae indet. Milne-Edwards 1853 crab
Bivalvia
 Cardiida - Cyrenidae
? Cyrenidae indet. Gray 1840 clam
Gastropoda
 Architaenioglossa - Ampullariidae
Ampullariidae indet. Gray 1824 apple snail
 Vertebrata -
Reptilia
 Loricata -
Eusuchia indet. crocodilian
Gavialoidea/ longirostrine Crocodyloidea (fragmentary teeth, large-sized)
 Loricata - Sebecidae
Sebecidae indet. Savage 1951 crocodilian
Mammalia
 Cingulata - Dasypodidae
Parastegosimpsonia peruana Ciancio et al. 2012 armadillo
  - Mylodontidae
Mylodontidae indet. Ameghino 1889 edentate
 Theriamorpha -
cf. Griphodon sp. Anthony 1924 placental
 Panameriungulata - Didolodontidae
? Didolodus sp. Ameghino 1897 placental
 Rodentia -
Selvamys paulus n. gen. n. sp. Boivin et al. 2018 caviomorph
MUSM 2960 - holotype
Tarapotomys subandinus Boivin et al. 2018 caviomorph
MUSM 2961
 Rodentia - Agoutidae
Eoincamys valverdei Boivin et al. 2018 caviomorph
MUSM 3428 and 3429
Eoincamys parvus Boivin et al. 2018 caviomorph
MUSM 2962-2966 and 3430-3437
 Paucituberculata -
Palaeothentoidea "indet. 1" Goin et al. 2009 marsupial
Osteichthyes
 Ceratodontiformes - Lepidosirenidae
Lepidosirenidae indet. Stirton 1953 Australian lungfish
Actinopteri
 Siluriformes - Pimelodidae
cf. Phractocephalus sp. Spix and Agassiz 1829 cajaro
 Teleostei -
 Characiformes - Anostomidae
cf. Leporinus sp. Lundberg 1997
Leporinus sp. Lundberg 1997
 Characiformes - Cynodontidae
cf. Hydrolycus sp. Lundberg 1997
Chondrichthyes
 Rhinopristiformes - Pristidae
Pristis sp. Linck 1790 sawfish
 Myliobatiformes - Dasyatidae
Paratrygon sp. DumerĂ­l 1865 whiptail stingray