PBDB Collection

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

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
Cingulata - Dasypodidae	Pampatheriinae indet.⁵ Pampatheriinae indet.⁵ Paula Couto 1954 armadillo LACM 117506
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 - Hydrochoeridae	Cardiatherium sp.⁴ Cardiatherium sp.⁴ Ameghino 1883 caviomorph LACM 117509, 117510, 117511, 117512, 117513, 117514, 117515, 117516,117517
Rodentia -	Neoreomys huilensis³ Neoreomys huilensis³ Fields 1957 caviomorph LACM 117574, 117575, 117576, 117577
Rodentia - Dinomyidae	Potamarchus murinus⁵, cf. Pseudopotamarchus villanuevai⁷, Tetrastylus sp.⁵ Potamarchus murinus⁵ Burmeister 1885 caviomorph cf. Pseudopotamarchus villanuevai⁷ Kerber et al. 2016 caviomorph UFAC 5467 Tetrastylus sp.⁵ Ameghino 1886 caviomorph LACM 117535,
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 - Proterotheriidae	Proterotheriidae indet.⁵ Proterotheriidae indet.⁵ Ameghino 1887 placental LACM 117527
Panameriungulata - Macraucheniidae	Macraucheniidae indet.⁵ Macraucheniidae indet.⁵ Ameghino 1889 placental
Tribosphenida -	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
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)

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