Niteroi (Miocene of Brazil)

Where: Acre, Brazil (10.1° S, 67.8° W: paleocoordinates 10.4° S, 66.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Solimões Formation, Huayquerian (9.0 - 6.8 Ma)

• The river edge outcrops are accessible only during the low-water season (July to October) and comprise clay-pebble conglomerate (Acre Conglomerate Member in Frailey 1986) and gray to brown, often limey claystones. the base of the units is not visible, and their upper parts are covered by vegetation.

•The Ferigolomys pacarana specimen comes from horizon B.

Environment/lithology: fluvial-lacustrine; brown, gray claystone and muddy conglomerate

Size class: macrofossils

Primary reference: O. A. Aguilera, J. Bocquentin, J. G. Lundberg and A. Maciente. 2008. A new cajaro catfish (Siluriformes : Pimelodidae : Phractocephalus) from the Late Miocene of southwestern Amazonia and its relationship to Phractocephalus nassi of the Urumaco Formation. Palaeontologische Zeitschrift 82(2):231-245 [C. Jaramillo/G. Ballen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136717: authorized by Carlos Jaramillo, entered by Gustavo Ballen on 03.12.2012, edited by Miranta Kouvari and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

 Siluriformes - Pimelodidae
Phractocephalus acreornatus Aguilera et al. 2008 cajaro
UFAC 4849 (paratype)
 Testudines - Panchelidae
Chelus sp.4 Duméril 1806 sideneck turtle
 Testudines - Podocnemidae
cf. Podocnemis sp.4 Wagler 1830 river turtle
 Cariamae - Phorusrhacidae
Phorusrhacinae indet.4 Ameghino 1899 terror bird
 Pseudosuchia - Gavialidae
Brasilosuchus mendesi n. gen. n. sp.5
Brasilosuchus mendesi n. gen. n. sp.5 Souza Filho and Bocquetin Villanueva 1989 archosaur
UFAC 1664 - holotype (premaxilla)
 Crocodylia - Crocodylidae
Charactosuchus sp.4 Langston 1965 crocodile
 Crocodylia - Alligatoridae
Purussaurus brasiliensis4 Barbosa-Rodrigues 1892 crocodilian
"Mourasuchus nativus" = Mourasuchus arendsi2 Bocquentin Villanueva 1984 crocodilian
UFAC 1397, 1424, 1431, 1477, 1484, 1485 and 1495 (cranial remains)
Caiman sp.4 Spix 1825 caiman
Skull and mandible - type
 Crocodylia -
Ikanogavialis sp.4 Sill 1970 crocodilian
 Notoungulata - Toxodontidae
Toxodontidae indet.4 Ameghino 1889 notoungulate
 Rodentia - Neoepiblemidae
Phoberomys cf. bordasi4, "Neoepiblema ambrosettianus" = Neoepiblema ambrosettianus4, "Neoepiblema acreensis n. sp." = Neoepiblema ambrosettianus1
Phoberomys cf. bordasi4 Patterson 1942 caviomorph
"Neoepiblema ambrosettianus" = Neoepiblema ambrosettianus4 Ameghino 1889 caviomorph
UFAC 4515
"Neoepiblema acreensis n. sp." = Neoepiblema ambrosettianus1 Ameghino 1889 caviomorph
UFAC 1716 (holotype); UFAC 1490, 1658, 1810 (paratypes)
 Rodentia - Dinomyidae
Ferigolomys pacarana n. gen. n. sp.3
Ferigolomys pacarana n. gen. n. sp.3 Kerber et al. 2018 caviomorph
Holotype: UFAC 6460
 Xenarthra - Mylodontidae
Urumacotherium sp.4 Bocquentin-Villanueva 1983 edentate
Pseudoprepotherium sp.4 Hoffstetter 1961 edentate