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FLOODPLAIN TAPHONOMIC MODE OF EARLY MIOCENE VERTEBRATES OF SOUTHERN PATAGONIA, ARGENTINA

2019; Society for Sedimentary Geology; Volume: 34; Issue: 2 Linguagem: Inglês

10.2110/palo.2018.087

1938-5323

Claudia I. Montalvo, M. Sol Raigemborn, Rodrigo L. Tomassini, Luciano Zapata, M. Susana Bargo, Ma. Celeste Martínez Uncal, Sergio F. Vizcaı́no,

Geological and Geochemical Analysis

Research Article| February 13, 2019 FLOODPLAIN TAPHONOMIC MODE OF EARLY MIOCENE VERTEBRATES OF SOUTHERN PATAGONIA, ARGENTINA CLAUDIA I. MONTALVO; CLAUDIA I. MONTALVO 1Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Avda. Uruguay 151, 6300 Santa Rosa, La Pampa, Argentina Search for other works by this author on: GSW Google Scholar M. SOL RAIGEMBORN; M. SOL RAIGEMBORN 2Centro de Investigaciones Geológicas (CONICET – UNLP), Diagonal 113 n° 275, (B1904DPK) La Plata, Argentina Search for other works by this author on: GSW Google Scholar RODRIGO L. TOMASSINI; RODRIGO L. TOMASSINI 3INGEOSUR, Departamento de Geología, Universidad Nacional del Sur - CONICET, Avenida Alem 1253, 8000 Bahía Blanca, Buenos Aires, Argentina Search for other works by this author on: GSW Google Scholar LUCIANO ZAPATA; LUCIANO ZAPATA 4Cátedra de Fundamentos de Geología, Facultad de Ciencias Naturales y Museo, UNLP, CONICET, Av. 122 y 60 (1900), La Plata, Argentina Search for other works by this author on: GSW Google Scholar M. SUSANA BARGO; M. SUSANA BARGO 5División Paleontología de Vertebrados, Museo de La Plata, Unidades de Investigación Anexo Museo, CIC, Av. 122 y 60, (1900) La Plata, Argentina Search for other works by this author on: GSW Google Scholar M. CELESTE MARTÍNEZ UNCAL; M. CELESTE MARTÍNEZ UNCAL 1Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Avda. Uruguay 151, 6300 Santa Rosa, La Pampa, Argentina Search for other works by this author on: GSW Google Scholar SERGIO F. VIZCAÍNO SERGIO F. VIZCAÍNO 6División Paleontología de Vertebrados, Museo de La Plata, Unidades de Investigación Anexo Museo, CONICET, Av. 122 y 60, (1900) La Plata, Argentina Search for other works by this author on: GSW Google Scholar Author and Article Information CLAUDIA I. MONTALVO 1Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Avda. Uruguay 151, 6300 Santa Rosa, La Pampa, Argentina M. SOL RAIGEMBORN 2Centro de Investigaciones Geológicas (CONICET – UNLP), Diagonal 113 n° 275, (B1904DPK) La Plata, Argentina RODRIGO L. TOMASSINI 3INGEOSUR, Departamento de Geología, Universidad Nacional del Sur - CONICET, Avenida Alem 1253, 8000 Bahía Blanca, Buenos Aires, Argentina LUCIANO ZAPATA 4Cátedra de Fundamentos de Geología, Facultad de Ciencias Naturales y Museo, UNLP, CONICET, Av. 122 y 60 (1900), La Plata, Argentina M. SUSANA BARGO 5División Paleontología de Vertebrados, Museo de La Plata, Unidades de Investigación Anexo Museo, CIC, Av. 122 y 60, (1900) La Plata, Argentina M. CELESTE MARTÍNEZ UNCAL 1Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Avda. Uruguay 151, 6300 Santa Rosa, La Pampa, Argentina SERGIO F. VIZCAÍNO 6División Paleontología de Vertebrados, Museo de La Plata, Unidades de Investigación Anexo Museo, CONICET, Av. 122 y 60, (1900) La Plata, Argentina email: cmontalvo@exactas.unlpam.edu.ar Publisher: SEPM Society for Sedimentary Geology First Online: 13 Feb 2019 Online Issn: 1938-5323 Print Issn: 0883-1351 Copyright © 2019, SEPM (Society for Sedimentary Geology) PALAIOS (2019) 34 (2): 105–120. https://doi.org/10.2110/palo.2018.087 Article history First Online: 13 Feb 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation CLAUDIA I. MONTALVO, M. SOL RAIGEMBORN, RODRIGO L. TOMASSINI, LUCIANO ZAPATA, M. SUSANA BARGO, M. CELESTE MARTÍNEZ UNCAL, SERGIO F. VIZCAÍNO; FLOODPLAIN TAPHONOMIC MODE OF EARLY MIOCENE VERTEBRATES OF SOUTHERN PATAGONIA, ARGENTINA. PALAIOS 2019;; 34 (2): 105–120. doi: https://doi.org/10.2110/palo.2018.087 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyPALAIOS Search Advanced Search ABSTRACT A continental assemblage of fossil mammals from the Santa Cruz Formation (early Miocene, Burdigalian) recovered from the coast of the Santa Cruz Province (Anfiteatro locality), Argentina, was evaluated taphonomically. Due to its stratigraphic position and age (∼ 17.5 Ma), the fossiliferous level corresponds to the lower section of the Estancia La Costa Member (lower part of the Santa Cruz Formation). The Anfiteatro assemblage (Santacrucian South American Land Mammal Age) is dominated by mammals, but some birds and carnivore coprolites were also recorded. The recorded taphonomic features and the sedimentological interpretation suggest that the bone remains were preserved in a floodplain related to a fluvial system influenced by volcaniclastic input. The assemblage was interpreted as a result of death of mammals over a short period of time. The residence time of carcasses on the surface was variable. Although most bones were quickly buried, the exposure was sufficiently long for the disarticulation and scattering of different skeletal components and the agency of other processes (e.g., trampling, weathering). The loss of skeletal elements is linked to the action of water flows generated in the plain, during overbank floods or rainfalls, which mobilized those elements more susceptible to transport. After burial, the specimens were affected by diagenetic processes (e.g., soil corrosion, infilling, impregnation, deformation). The taphonomic evaluation of the Anfiteatro locality provides a framework for the analysis of other fossil assemblages with similar features worldwide. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.