Rio Acre (Miocene of Brazil)

Where: Acre, Brazil (10.1° S, 66.9° W: paleocoordinates 10.4° S, 64.9° W)

• coordinate estimated from map

When: Solimoes Formation, Tortonian (11.6 - 7.2 Ma)

• formation-level stratigraphic resolution

Environment/lithology: fluvial-deltaic; siliciclastic sediments

Size class: macrofossils

Preservation: original phosphate

Primary reference: J. B. Villanueva, C. Muizon, and J. P. Souza Filho. 1990. Novos achados de cetaceos longirrostros no Neogeno do Acre, Brasil. Boletim do Museu Paraense Emilio Goeldi, Ciencias da Terra 2:59-64 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 55602: authorized by Mark Uhen, entered by Mark Uhen on 01.11.2005, edited by Juan Carrillo, Grace Varnham and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Myliobatiformes - Potamotrygonidae
Actinopteri
 Siluriformes - Callichthyidae
Callichthyidae indet.3 Gill 1872 catfish
 Siluriformes - Doradidae
 Siluriformes - Pimelodidae
Pimelodidae indet.3 Eigenmann and Eigenmann 1918 catfish
 Characiformes - Characidae
Colossoma sp.3 Cuvier 1818
 Osteoglossiformes - Osteoglossidae
Osteoglossidae indet.3 Bonaparte 1832 arowana
Reptilia
 Testudines - Pantestudinidae
Testudinidae indet.3 Batsch 1788 turtle
Chelonoidis sp.1 Fitzinger 1835 turtle
 Testudines - Panchelidae
"Chelus colombianus" = Chelus colombianus1, "Chelus lewisi" = Chelus colombianus1
"Chelus colombianus" = Chelus colombianus1 Wood 1976 Chelus colombiana
"Chelus lewisi" = Chelus colombianus1 Wood 1976 Chelus colombiana
 Testudines - Podocnemidae
Stupendemys sp.1 Wood 1976 sideneck turtle
Podocnemis bassieri1 river turtle
 Testudines - Pelomedusidae
Pelomedusidae indet.3 Cope 1868 sideneck turtle
entered as "Pelomedisidae"
Aves
  -
Aves indet.3 Linnaeus 1758 bird
 Suliformes - Anhingidae
Anhinga cf. grandis1 Martin and Mengel 1975 darter
Reptilia
 Pseudosuchia - Gavialidae
Hesperogavialis "sp. 1"1 Bocquentin Villanueva and Buffetaut 1981 archosaur
Hesperogavialis "sp. 2"1 Bocquentin Villanueva and Buffetaut 1981 archosaur
 Crocodylia -
? Brachygnathosuchus indet.3 Mook 1921 crocodilian
 Crocodylia - Crocodylidae
Charactosuchus sansoai n. sp.1 Souza Filho 1991 crocodile
Charactosuchus fieldsi1 Langston 1965 crocodile
 Crocodylia -
? Gavialosuchus indet.3 Toula and Kail 1885 crocodilian
 Crocodylia - Alligatoridae
Purussaurus sp.1 Barbosa Rodrigues 1892 crocodilian
Purussaurus brasiliensis n. gen. n. sp.1 Barbosa-Rodrigues 1892 crocodilian
Type (anterior half of right dentary)
Acresuchus pachytemporalis7 Souza-Filho et al. 2019 crocodilian
Mourasuchus sp.1 Price 1964 crocodilian
"Mourasuchus nativus" = Mourasuchus arendsi1 Bocquentin Villanueva 1984 crocodilian
? Caiman indet.3 Spix 1825 caiman
 Crocodylia -
Gryposuchus sp.1 Gürich 1912 crocodilian
Gryposuchus jessei n. gen. n. sp.4 Gürich 1912 crocodilian
Holotype (partial skull)
 Squamata - Aniliidae
Colombophis spinosus6 Hsiou et al. 2010 pipe snake
Colombophis portai6 Hoffstetter and Rage 1977 pipe snake
 Squamata - Boidae
Waincophis sp.6 Albino 1987 boa
Mammalia
 Sirenia - Trichechidae
Ribodon limbatus1 Ameghino 1883 manatee
 Primates - Cebidae
Acrecebus fraileyi1 Kay and Cozzuol 2006 monkey
 Primates - Atelidae
Solimoea acrensis1 Kay and Cozzuol 2006 monkey
Stirtonia sp.1 Hershkovitz 1970 monkey
 Notoungulata - Toxodontidae
Paratrigodon sp.6 Cabrera and Kraglievich 1931 notoungulate
Neotoxodon pascuali1 notoungulate
Mesenodon juruaensis1 notoungulate
Minitoxodon acrensis1 notoungulate
Gyrinodon quasus1 notoungulate
Palaeotoxodon sp.6 Ameghino 1904 notoungulate
 Notoungulata - Haplodontheriidae
Mesotoxodon pricei1 notoungulate
Trigodon sp.1 Ameghino 1882 notoungulate
Toxodontherium listai1 notoungulate
Neotrigodon utoquineae1 Spillman 1949 notoungulate
Abothrodon pricei1 Paula Couto 1956 notoungulate
Trigodonops lopesi1 Roxo 1821 notoungulate
 Notoungulata - Leontiniidae
Purperia cribatidens6 Paula Couto 1981 notoungulate
 Rodentia - Neoepiblemidae
Phoberomys sp.5 Kraglievich 1926 caviomorph
Neoepiblema ambrosettianus1 Ameghino 1889 caviomorph
Neoepiblema horridula1 Ameghino 1886 caviomorph
 Rodentia - Dinomyidae
Telicomys amazonensis1 Frailey 1986 caviomorph
Scleromys colombianus1 Fields 1957 caviomorph
Simplimus sp.1 Ameghino 1904 caviomorph
Eumegamys paranensis1 Kraglievich 1926 caviomorph
Gyriabrus sp.1 Ameghino 1891 caviomorph
 Chiroptera - Noctilionidae
Noctilio lacrimaelunaris1 Czaplewski 1996 bulldog bat
 Chiroptera - Molossidae
Molossidae indet.6 Gervais 1856 free-tailed bat
 Cingulata - Dasypodidae
Anadasypus sp.1 Carlini et al. 1997 armadillo
 Cingulata - Pachyarmatheriidae
Neoglyptatelus sp.1 Carlini et al. 1997 edentate
 Phyllophaga - Nothrotheriidae
Mionothropus cartellei2 De Iuliis et al. 2011 edentate
type: LACM 4609 ⁄ 117533 (= Nothropus priscus Frailey, 1986).
 Phyllophaga - Orophodontidae
Octodontobradys puruensis1 Santos et al. 1993 edentate
 Xenarthra - Megalonychidae
Megalonychidae indet.3 Gervais 1855 edentate
cf. Protomegalonyx sp.1 Kraglievich 1925 edentate
Pliomorphus sp.1 Ameghino 1885 edentate
 Xenarthra -
"Tardigrada indet." = Folivora1
"Tardigrada indet." = Folivora1 Delsuc et al. 2001 edentate
 Xenarthra - Megatheriidae
cf. Hapalops sp.1 Ameghino 1887 edentate
cf. Planops sp.1 Ameghino 1887 edentate
 Xenarthra - Mylodontidae
Mylodontidae indet.1, "Stenodon campbelli n. gen. n. sp." = Urumacotherium campbelli3, "Urumacotherium campbelli" = Urumacotherium campbelli1, Ranculcus sp.1, Pseudoprepotherium venezuelanum1
Mylodontidae indet.1 Ameghino 1889 edentate
gen. et sp. nov.
"Stenodon campbelli n. gen. n. sp." = Urumacotherium campbelli3 Frailey 1986 edentate
"Urumacotherium campbelli" = Urumacotherium campbelli1 Frailey 1986 edentate
Ranculcus sp.1 Ameghino 1891 edentate
Pseudoprepotherium venezuelanum1 Hoffstetter 1961 edentate
 Xenarthra - Pampatheriidae
Kraglievichia sp.1 Castellanos 1927 edentate
 Xenarthra - Glyptodontidae
Plohophorus sp.1 Ameghino 1887 glyptodon
Paraglyptodon sp.1 Castellanos 1932 glyptodon
 Xenarthra - Propalaehoplophoridae
Asterostemma sp.1 Ameghino 1889 edentate
 Proboscidea - Gomphotheriidae
Amahuacatherium peruvium1 Romero-Pittman 1996 gomphothere
 Ungulata - Macraucheniidae
Macraucheniidae indet.3 Ameghino 1889 eutherian
Cullinia sp.1 Cabrera and Kraglievich 1931 eutherian
 Ungulata - Proterotheriidae
cf. Proterotherium sp.1 Ameghino 1883 eutherian
 Ungulata - Astrapotheriidae
"? Synastrapotherium sp." = Xenastrapotherium3, Xenastrapotherium amazonense6
"? Synastrapotherium sp." = Xenastrapotherium3 Kraglievich 1928 eutherian
Xenastrapotherium amazonense6 Paula Couto 1976 eutherian
 Didelphimorphia - Didelphidae
Didelphis solimoensis6 Couzzol et al. 2006 large American opossum
 Cetacea - Platanistidae
cf. Pomatodelphis bobengi6 Case 1934 toothed whale
 Cetacea - Iniidae
Plicodontinia mourai1 Miranda-Ribeiro 1938 toothed whale
Saurocetes sp.1 Burmeister 1871 toothed whale
cf. Ischyrorhynchus sp. Ameghino 1891 toothed whale
Ischyrorhynchus vanbenedeni1 Ameghino 1891 toothed whale
 Cetacea - Pontoporiidae
Pontoporiidae indet.6 Gray 1870 toothed whale