Fossil beetles from Pilauco, south-central Chile: An Upper Pleistocene paleoenvironmental reconstruction

Tello, Francisco; Elgueta, Mario; Abarzúa, Ana M.; Torres, Fernanda; Pino, Mario

doi:10.1016/j.quaint.2017.05.046

Cited by 13 publications

(10 citation statements)

References 28 publications

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“…As for fossilized beetles, 22 species, belonging to 14 families, have been recorded from the Pilauco site. Among these, Curculionidae , Carabidae , Staphylinidae , Hydrophilidae and Scarabaeidae are the most abundant families ( Tello et al 2017 , 2019 ). According to recent paleo-inferences based on beetle records, Pilauco was dominated by large mammals and climatic transition.…”

Section: Study Site and Paleontological Contextmentioning

confidence: 99%

“…According to recent paleo-inferences based on beetle records, Pilauco was dominated by large mammals and climatic transition. When compared with modern beetle assemblages, there was a persistent rich beetle fauna, which included dung beetles and other coprophilous insects ( Tello et al 2017 , 2019 ; Tello and Torres 2020 ).…”

Section: Study Site and Paleontological Contextmentioning

confidence: 99%

“…Thus, megafauna-species-dependent (e.g., parasitic insects and dung beetles) are very likely to have suffered the loss of these large animals. As a consequence, these organisms likely experienced major changes in their community compositions, along with the extinction of many species ( Zinovyev 2011 ; Ashworth and Nelson 2014 ; Tello et al 2017 ). As an example, Cobboldia russanovi Grunin, 1973 ( Gasterophilidae ) was a mammoth-botfly that became extinct at the end of the Pleistocene in Russia due to the loss of its host ( Kuzmina and Korotyaev 2019 , and references therein).…”

Section: Introductionmentioning

confidence: 99%

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Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae): evidence of beetle extinction in the Pleistocene–Holocene transition in Chilean Northern Patagonia

Tello¹,

Verdú²,

Rossini³

et al. 2021

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The South American Pleistocene–Holocene transition has been characterized by drastic climatic and diversity changes. These rapid changes induced one of the largest and most recent extinctions in the megafauna at the continental scale. However, examples of the extinction of small animals (e.g., insects) are scarce, and the underlying causes of the extinction have been little studied. In this work, a new extinct dung beetle species is described from a late Pleistocene sequence (~15.2 k cal yr BP) at the paleoarcheological site Pilauco, Chilean Northern Patagonia. Based on morphological characters, this fossil is considered to belong to the genus Onthophagus Latreille, 1802 and named Onthophagus pilaucosp. nov. We carried out a comprehensive revision of related groups, and we analyzed the possible mechanism of diversification and extinction of this new species. We hypothesize that Onthophagus pilaucosp. nov. diversified as a member of the osculatii species-complex following migration processes related to the Great American Biotic Interchange (~3 Ma). The extinction of O. pilaucosp. nov. may be related to massive defaunation and climatic changes recorded in the Plesitocene-Holocene transition (12.8 k cal yr BP). This finding is the first record of this genus in Chile, and provides new evidence to support the collateral-extinction hypothesis related to the defaunation.

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Section: Study Site and Paleontological Contextmentioning

confidence: 99%

Section: Study Site and Paleontological Contextmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae): evidence of beetle extinction in the Pleistocene–Holocene transition in Chilean Northern Patagonia

Tello¹,

Verdú²,

Rossini³

et al. 2021

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“…y Weinmannia trichosperma Cav. (Abarzúa et al 2020); 22 taxa modernos y una especie extinta (O. pilauco) de coleópteros (Tello et al 2017;Tello et al 2020;Tello et al 2021). Adicionalmente, los restos arqueológicos del sitio corresponden en general a material lítico expeditivo (Navarro-Harris et al 2020;Pérez-Balarezo et al 2021) e icnofósiles de huellas humanas (Moreno et al 2019).…”

Section: Materiales Y Métodosunclassified

Nuevos registros fósiles de Onthophagus pilauco Tello, Verdú, Rossini y Zunino, 2021 (Coleoptera: Scarabaeidae: Scarabaeinae), revelan un patrón morfológico único entre los Onthophagus americanos

Tello

Rossini

Pino

et al. 2021

RCHE

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Se describen e ilustran nuevos hallazgos de restos fósiles de uno de los escarabajos estercoleros de Pilauco, Onthophagus pilauco Tello, Verdú, Rossini y Zunino, 2021 (Coleoptera: Scarabaeidae), extinto en la base de la cronozona Younger Dryas, al fin del Pleistoceno (~12.800 años antes del presente) en la Patagonia norte de Chile. Análisis recientes de material procedente del sitio Pilauco permitieron registrar nuevos restos fósiles pertenecientes a O. pilauco, incluidos restos de clípeos con un cuerno central excepcional que asignamos a especímenes machos. Los nuevos descubrimientos nos permitieron revisar la descripción propuesta anteriormente por los descriptores y atribuir el sexo hembra al holotipo de O. pilauco. A la luz de los conocimientos actuales sobre el género, se discute la singularidad de este carácter fenotípico (i.e., cuerno del disco del clípeo) dentro de los Onthophagus americanos y la posible relación con grupos de la región asiática. A partir de esto, sugerimos que las novedades morfológicas observadas en O. pilauco, corresponden a rasgos únicos entre los Onthophagus americanos, que posiblemente se originaron a partir del aislamiento durante la última glaciación en la Patagonia norte de Chile.

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“…Layer PB‐9 is composed of black peat and does not feature mega‐ and microfauna remains or lithic artifacts. Interpretations based on pollen, diatoms, phytoliths, seeds, beetles, and sedimentological analyses indicate that the PB7 and PB8 layers represent a mosaic of microenvironments including wetlands, lagoons, and swamps (Abarzúa, Lobos & Martel‐Cea, ; Pino et al, ; Tello, Elgueta, Abarzúa, Torres, & Pino, ). The granulometry of the PB‐1 (PISP) and PB7 sand fractions have no significant statistical differences.…”

Section: Geological Settingmentioning

confidence: 99%

The procurement and use of knappable glassy volcanic raw material from the late Pleistocene Pilauco site, Chilean Northwestern Patagonia

et al. 2019

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In this study we used a multidisciplinary approach, coupling morphological, geological, geochemical, and statistical analyses to investigate the provenance of rhyodacitic and dacitic glass knapped at the Pilauco site (40°34′11” S, 73°06′17” W; 13,570 ± 70–12,540 ± 90 14C year BP) in northwestern Chilean Patagonia. A morphotechnological analysis was performed on the entire lithic assemblage, which is composed of cores, retouched and unretouched unifacial flakes, and small pieces of debitage, some of them closely associated with Notiomastodon aff. N. platensis gomphothere bones. Sixty‐two archeological and geological samples were analyzed by inductively coupled plasma mass spectrometry revealing a wide range of basaltic to rhyodacitic compositions. The archeological knappable dacitic and rhyodacitic glasses were recovered from pebbles deposited mainly on a beach away from the site, as deduced by the presence of minute and dense crescentic percussion marks on the cortexes. Geochemical trace element analysis suggests that the Puyehue–Cordón Caulle Volcanic Complex is the most likely source for the volcanic glass artifacts at Pilauco. The new morphotechnological and provenance record and improved stratigraphic sequences highlight the Pilauco site as an important contribution for the diversity of the South American geoarchaeological context.

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Fossil beetles from Pilauco, south-central Chile: An Upper Pleistocene paleoenvironmental reconstruction

Cited by 13 publications

References 28 publications

Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae): evidence of beetle extinction in the Pleistocene–Holocene transition in Chilean Northern Patagonia

Onthophagus pilauco sp. nov. (Coleoptera, Scarabaeidae): evidence of beetle extinction in the Pleistocene–Holocene transition in Chilean Northern Patagonia

Nuevos registros fósiles de Onthophagus pilauco Tello, Verdú, Rossini y Zunino, 2021 (Coleoptera: Scarabaeidae: Scarabaeinae), revelan un patrón morfológico único entre los Onthophagus americanos

The procurement and use of knappable glassy volcanic raw material from the late Pleistocene Pilauco site, Chilean Northwestern Patagonia

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