Patos, Rio Acre (Miocene of Brazil)

Also known as LACM 4611

Where: Acre, Brazil (10.9° S, 69.9° W: paleocoordinates 11.2° S, 68.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Solimoes Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• The outcrop is visible only in the low-water season and consists of an intraformational conglom- erate with clasts of clay and silt. It is part of a large paleochan- nel (Fig. 2). The base of the unit is not visible, and its upper part is covered by vegetation.

• formation-level stratigraphic resolution

Environment/lithology: alluvial fan; conglomerate and sandstone

• Latrubesse et al. (1997) interpreted the Solimoes deposits as being part of a megafan system, with its headwaters in the Peruvian Andes.
• The outcrop is visible only in the low-water season and consists of an intraformational conglom- erate with clasts of clay and silt.

Size class: mesofossils

Primary reference: R. F. Kay and M. A. Cozzuol. 2006. New platyrrhine monkeys from the Solimoes Formation (late Miocene, Acre State, Brazil). Journal of Human Evolution 50(6):673-686 [C. Jaramillo/G. Ballen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 134808: authorized by Carlos Jaramillo, entered by Gustavo Ballen on 17.10.2012, edited by Juan Carrillo and Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Actinopteri
 Siluriformes - Pimelodidae
Phractocephalus acreornatus1
Phractocephalus acreornatus1 Aguilera et al. 2008 cajaro
UFAC 2093, 2094, 2187, 4498, 4493, 4668, 5073 (paratypes); LACM 128338, 128339 (paratypes)
Reptilia
 Testudines - Podocnemididae
Stupendemys souzai n. sp.2
Stupendemys souzai n. sp.2 Bocquetin and Melo 2006 sideneck turtle
UFAC 1544, costal plate; UFAC 1764, right humerus;
Mammalia
 Sirenia - Trichechidae
? Ribodon sp.5
? Ribodon sp.5 Ameghino 1883 manatee
LACM 117532
 Primates - Atelidae
Solimoea acrensis n. sp.
Solimoea acrensis n. sp. Kay and Cozzuol 2006 monkey
 Rodentia - Erethizontidae
Erethizontidae indet.5
Erethizontidae indet.5 Bonaparte 1845 porcupine
LACM 117507
 Rodentia - Caviidae
Caviodon sp.7, Dolichotinae indet.7
Caviodon sp.7 Ameghino 1885 caviomorph
UFAC 5465
Dolichotinae indet.7 mara
UFAC 5468
 Rodentia -
Neoreomys huilensis3
Neoreomys huilensis3 Fields 1957 caviomorph
LACM 117574, 117575, 117576, 117577
 Rodentia - Hydrochoeridae
Cardiatherium sp.4
Cardiatherium sp.4 Ameghino 1883 caviomorph
LACM 117509, 117510, 117511, 117512, 117513, 117514, 117515, 117516,117517
 Rodentia - Dinomyidae
Tetrastylus sp.5, cf. Pseudopotamarchus villanuevai7, Potamarchus murinus5
Tetrastylus sp.5 Ameghino 1886 caviomorph
LACM 117535,
cf. Pseudopotamarchus villanuevai7 Kerber et al. 2016 caviomorph
UFAC 5467
Potamarchus murinus5 Burmeister 1885 caviomorph
 Rodentia - Neoepiblemidae
Neoepiblemidae indet.5, Neoepiblemidae indet.8, Phoberomys sp.7
Neoepiblemidae indet.5 Kraglievich 1926 caviomorph
LACM 117524,117525
Neoepiblemidae indet.8 Kraglievich 1926 caviomorph
LACM 117508
Phoberomys sp.7 Kraglievich 1926 caviomorph
UFAC 1817
 Rodentia - Echimyidae
Heteropsomyinae indet.5
Heteropsomyinae indet.5 Anthony 1917 spiny rat
LACM 117526
 Panameriungulata - Macraucheniidae
Macraucheniidae indet.5
Macraucheniidae indet.5 Ameghino 1889 placental
 Panameriungulata - Proterotheriidae
Proterotheriidae indet.5
Proterotheriidae indet.5 Ameghino 1887 placental
LACM 117527
 Cingulata - Dasypodidae
Pampatheriinae indet.5
Pampatheriinae indet.5 Paula Couto 1954 armadillo
LACM 117506
 Theriamorpha -
Marsupialia indet.5
Marsupialia indet.5 Illiger 1811 marsupial
LACM 117501
 Didelphimorphia - Didelphidae
Lutreolina materdei n. sp.6
Lutreolina materdei n. sp.6 Goin and De los Reyes 2011 lutrine opossum
1Aguilera et al. 2008; 2Bocquetin and Melo 2006; 3Campbell et al. 2006; 4Deschamps et al. 2013; 5Frailey 1986; 6Goin and De los Reyes 2011; 7Kerber et al. 2017; 8Vucetich et al. 2010