Itaya River in Iquitos Layer indet. (Miocene of Peru)

Also known as PIMUZ Historical Collection, Telefunkenstation

Where: Loreto, Peru (3.7° S, 73.3° W: paleocoordinates 4.3° S, 70.3° W)

• outcrop-level geographic resolution

When: Pebas Formation, Middle Miocene (16.0 - 11.6 Ma)

• The layers here referred to (Table 1) were likely situated within the urban area or the vicinity of the city of Iquitos. However, because of the erosion both by the river and rain, but also due to the growth of the city in more than a century, an exact location of them is not possible. Based on the Molluscan Zones (MZ) proposed by Wesselingh et al., (2006), the city of Iquitos and its surroundings correspond to the MZ6 (15–14 Ma) and MZ7 (14–12 Ma) zones, respectively (Fig. 1B).

Environment/lithology: fluvial-lacustrine; lithology not reported

• In reference to the vertebrate assemblage, most of the bony fishes reported here (Table 2; Additional file 1) are typical for a tropical freshwater composition.
• Indeterminate location of clays

Size classes: macrofossils, mesofossils, microfossils

Collected by Dr. Hans Bluntschli and Dr. Bernhard Peyer in 1912

Collection methods: quarrying,

• The entire specimens were housed in the collections, which are now part of the Palaeontological Institute and Museum of the University of Zurich (PIMUZ).

Primary reference: J. D. Carrillo-Briceño, O. A. Aguilera, A. Benites-Palomino, A. S. Hsiou, J. L. O. Birindelli, S. Andet, E.-A. Cadena and T. M. Scheyer. 2021. A historical vertebrate collection from the Middle Miocene of the Peruvian Amazon. Swiss Journal of Palaeontology 140(26):1-30 [E. Vlachos/E. Vlachos]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 224013: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 27.12.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Actinopteri
 Characiformes - Characidae
Reptilia
 Loricata -
Crocodylia indet. crocodilian
 Crocodylia - Gavialidae
Gryposuchinae indet. Vélez-Juarbe et al. 2007 crocodilian
 Crocodylia - Alligatoridae
Purussaurus sp. Barbosa Rodrigues 1892 crocodilian
 Testudines - Podocnemididae
Podocnemididae indet. Cope 1868 sideneck turtle
 Testudines - Chelidae
Chelus colombianus Wood 1976 Chelus colombiana
Gnathostomata
  -
Chondrichthyes indet. Huxley 1880 cartilaginous fish