+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

A Miocene toxodontid Mammalia, Notoungulata from the sedimentary series of the Cura-Mallin Formation, Lonquimay, Chile



A Miocene toxodontid Mammalia, Notoungulata from the sedimentary series of the Cura-Mallin Formation, Lonquimay, Chile



Revista Geologica de Chile 30(2): 285-298



Middle Miocene fluvo-lacustrine strata of the Rio Pedregoso Member of the Cura-Mallin Formation are broadly exposed to the east and south of the town of Lonquimay, Chile. These strata accumulated in the extensional Cura-Mallin Basin, a basin which was subsequently inverted. The original depocenter is interpreted as a double half-graben, diachronic sub-basin system. A partial left mandible was collected from the Cura-Mallin Formation near the base of Cerro Tallon along the west bank of the Rio Biobio. Morphological and morphometric comparisons permit referral of the specimen to the toxodontid notoungulate Nesodon conspurcatus. This represents the first report of Nesodon conspurcatus outside of Patagonia and one of the few well-documented occurrences of Nesodon outside of high latitude Argentina. The widespread geographic range of Nesodon, combined with its restricted temporal range, suggest it may be one of the most useful indicator taxa for Santacrucian age faunas. The absence of Nesodon in the type Friasian assemblage at Rio Frias/Cisnes in Chilean Patagonia strengthens the case for a faunal distinction between the Santacrucian and Friasian SALMAs.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 029592699

Download citation: RISBibTeXText


Related references

Paleoenvironmental and paleoclimatologic considerations during the Miocene of the Cura-Mallin Formation, 37 degrees S-39 degrees S, Chile. Actas Congreso Geologico Chileno: l. 1; Pages 508-513. 1994., 1994

Chronologic implications of new Miocene mammals from the Cura-Mallín and Trapa Trapa formations, Laguna del Laja area, south central Chile. Journal of South American Earth Sciences 26(4): 0-423, 2008

Chronologic implications of new Miocene mammals from the Cura-Mallin and Trapa Trapa formations, Laguna del Laja area, south-central Chile. Journal of South American Earth Sciences 26.4, 2008

New remains of toxodont Mamalia , Notoungulata in the strata of the Chucal Formation, Miocene, Altiplano of Arica, northern Chile Nuevos restos de toxodonte Mamalia, Notoungulata en estratos de la Formacion Chucal, Mioceno, Altiplano de Arica, norte de Chile. Revista Geologica de Chile. Julio; 291: 81-91, 2002

Record of the first avian fossil of the Tertiary of Chile a duck Pelecaniformes; Anhingidae, preserved in a fluvial delta of the Miocene of Lonquimay, Araucania region, Chile Hallazgo del primer ave fosil del Terciario de Chile un anade Pelecaniformes; Anhingidae, preservado en un ambiente deltaico-fluvial del Mioceno de Lonquimay, region de la Araucania, Chile. Unknown, 1991

Diversidad ictiologica en depositos continentales miocenos de la Formacion Cura-Mallin, Chile (37-39S): implicancias paleogeograficas. Revista Geologica de Chile. Julio; 211: 3-29, 1994

Geochronology and association of volcanic and continental sedimentary facies from the Miocene of Lonquimay, Chile; lat. 38 degrees -39 degrees S. Serie Comunicaciones Departamento de Geologia, Facultad de Ciencias Fisicas y Matematicas, Universidad de Chile: 40, 1988

New Interatheriinae (Mammalia, Notoungulata) of the Santa Cruz Formation (lower-middle Miocene) southern Patagonia, Argentina. Ameghiniana 37(4, Suppl, 2000

New Mesotheriidae taxa (Mammalia, Notoungulata, Typotheria) in the Miocene Chinches Formation, Cordillera Principal of San Juan Province. Ameghiniana 42(4, Suppl, 2005

Mesotheriid Mammalia, Notoungulata remains from the Colhuehuapian beds early Miocene of Chichinales Formation, Rio Negro Province, Argentina. Ameghiniana 48.2, 2011

The Cura-Mallin Basin; tectonic and stratigraphic analysis of the intra-arc basin in the Southern Andes of Argentina and Chile. AAPG Bulletin 83(11): 1883, 1999

The case for extensional tectonics in the Oligocene-Miocene Southern Andes as recorded in the Cura Mallin Basin (36 degrees -38 degrees S). Special Paper - Geological Society of America 407: 163-184, 2006

The representatives of the genus Protypotherium Mammalia, Notoungulata, Interatheriidae from the Lower Miocene of south east Santa Cruz province, Argentina Los representantes del genero Protypotherium Mammalia, Notoungulata, Interatheriidae del Mioceno Temperano del sudeste de la provincia de Santa Cruz, Republica Argentina. Academia Nacional de Ciencias (Cordoba Argentina) Miscelanea 95: 1-29, 1996

Discovery of the first Tertiary bird fossil from Chile; (Pelecaniformes; Anhingidae) preserved in a deltaic-fluvial environment from the Miocene of Lonquimay, Araucania, Chile. Congreso Geologico Chileno: Resumenes Presentados 6: 394-397, 1991

Typotheriopsis sp Notoungulata, Mesotheriidae, a mammal from the Upper Miocene of the Belen area, Arica, north Chile Typotheriopsis sp Notoungulata, Mesotheriidae, mamifero del Mioceno Superior en las cercanias de Belen, Arica, norte de Chile. Unknown, 1991