Estimación de la masa corporal de un ejemplar Cuaternario del carpincho extinto Neochoerus a través de medidas cráneo-dentales

Ghizzoni, Martín

doi:10.4072/rbp.2014.1.08

Cited by 11 publications

(3 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Extant scaling approaches are almost universally applied to estimate body mass in extinct members of crown clades, such as Mammalia and Aves (Greenewalt, 1975; Campbell Jr & Tonni, 1983; Damuth & MacFadden, 1990; Gingerich, 1990; Campbell Jr & Marcus, 1992; Finarelli & Flynn, 2006; Butler & Goswami, 2008; De Esteban‐Trivigno et al ., 2008; Hone et al ., 2008; Rinderknecht & Blanco, 2008; Millien & Bovy, 2010; De Esteban‐Trivigno & Köhler, 2011; Vizcaino et al ., 2011; Field et al ., 2013; Ghizzoni, 2014). These studies use standardised measurements regressed against body mass, including various teeth measurements, skull length, total body length, and various appendicular measurements analysed either within a bivariate or multivariate framework.…”

Section: Body Mass Inference In the Fossil Recordmentioning

confidence: 99%

The accuracy and precision of body mass estimation in non‐avian dinosaurs

Campione

Evans

2020

Biological Reviews

View full text Add to dashboard Cite

Inferring the body mass of fossil taxa, such as non‐avian dinosaurs, provides a powerful tool for interpreting physiological and ecological properties, as well as the ability to study these traits through deep time and within a macroevolutionary context. As a result, over the past 100 years a number of studies advanced methods for estimating mass in dinosaurs and other extinct taxa. These methods can be categorized into two major approaches: volumetric‐density (VD) and extant‐scaling (ES). The former receives the most attention in non‐avian dinosaurs and advanced appreciably over the last century: from initial physical scale models to three‐dimensional (3D) virtual techniques that utilize scanned data obtained from entire skeletons. The ES approach is most commonly applied to extinct members of crown clades but some equations are proposed and utilized in non‐avian dinosaurs. Because both approaches share a common goal, they are often viewed in opposition to one another. However, current palaeobiological research problems are often approach specific and, therefore, the decision to utilize a VD or ES approach is largely question dependent. In general, biomechanical and physiological studies benefit from the full‐body reconstruction provided through a VD approach, whereas large‐scale evolutionary and ecological studies require the extensive data sets afforded by an ES approach. This study summarizes both approaches to body mass estimation in stem‐group taxa, specifically non‐avian dinosaurs, and provides a comparative quantitative framework to reciprocally illuminate and corroborate VD and ES approaches. The results indicate that mass estimates are largely consistent between approaches: 73% of VD reconstructions occur within the expected 95% prediction intervals of the ES relationship. However, almost three quarters of outliers occur below the lower 95% prediction interval, indicating that VD mass estimates are, on average, lower than would be expected given their stylopodial circumferences. Inconsistencies (high residual and per cent prediction deviation values) are recovered to a varying degree among all major dinosaurian clades along with an overall tendency for larger deviations between approaches among small‐bodied taxa. Nonetheless, our results indicate a strong corroboration between recent iterations of the VD approach based on 3D specimen scans suggesting that our current understanding of size in dinosaurs, and hence its biological correlates, has improved over time. We advance that VD and ES approaches have fundamentally (metrically) different advantages and, hence, the comparative framework used and advocated here combines the accuracy afforded by ES with the precision provided by VD and permits the rapid identification of discrepancies with the potential to open new areas of discussion.

show abstract

Section: Body Mass Inference In the Fossil Recordmentioning

confidence: 99%

The accuracy and precision of body mass estimation in non‐avian dinosaurs

Campione

Evans

2020

Biological Reviews

View full text Add to dashboard Cite

show abstract

“…Our study suggests that defaunation of herbivorous mammals may also have had serious implications for the dispersal of plants with small seeds and lacking a fleshy fruit, especially given the manner in which larger mammals disperse seeds over greater distances. One example of such an extinction would be the loss of the Neochoerus sp., a Quaternary mega-rodent of approximately 200 kg in body mass (Ghizzoni, 2014). Across millennia, vertebrates have engaged in plant dispersal interactions, particularly significant among large mammals such as glyptodonts, proboscideans and bovids, which probably played a pivotal role in dispersing plants across wetlands (Janzen, 1984).…”

Section: The Broader Significance Of Neotropical Herbivores As Plant ...mentioning

confidence: 99%

Big rodents disperse small seeds and spores in Neotropical wetlands

Hoffmann,

Adolfo,

Green

et al. 2024

Journal of Ecology

View full text Add to dashboard Cite

The role of large frugivores in the dispersal of tropical trees has been well‐studied, whereas the importance of the world's largest rodents for plant dispersal has previously been ignored. We studied plant dispersal by gut passage (endozoochory) in Neotropical wetlands by the largest extant rodent, the capybara Hydrochoerus hydrochaeris. We compared it with another of the world's 10 largest rodents, the nutria or coypu Myocastor coypus. We collected 96 faecal samples (50 capybara, 46 nutria) from 10 sites within the Taim Ramsar site in southern Brazil, and extracted intact propagules from 10 g subsamples. Propagules from 27 plant taxa (24 angiosperms, and three aquatic ferns) were recovered, representing 13 plant families. Whole Spirodela (duckweed) plants were dispersed. Seeds from 14 angiosperm taxa were germinated in the laboratory. Taxonomic composition of propagules was significantly different for the two mammals, but propagule size was not. Capybara dispersed more terrestrial propagules per sample, and nutrias more aquatic propagules. When total faecal production was taken into account, an estimated 1025 propagules (including 133 fern spores) were dispersed by each capybara per day, compared with 691 propagules for nutrias (including 566 fern spores). Capybaras have larger home ranges and likely dispersed plants over a greater distance. Synthesis: This is the first demonstration that rodents disperse aquatic pteridophytes as well as flowering plants. Our results suggest that capybaras and nutrias play important, complementary roles in dispersing a variety of aquatic and terrestrial plant species within Neotropical wetlands. Our study indicates that the role of herbivorous mammals as vectors of plants with small seeds and non‐fleshy fruits has been overlooked in the neotropics and that defaunation of large herbivores can have negative consequences, in a manner similar to that previously highlighted for frugivores.

show abstract

“…Estos sedimentos, además de incluir fósiles de maderas, diversos taxones de moluscos en su mayoría dulceacuícolas, coprolitos y un peculiar icnofósil interpretado como trazas de estivación de lombrices (Verde et al, 2007), han proporcionado registros de vertebrados, en particular aves y predominantemente mamíferos. Estos mamíferos están representados al momento por unas 25 familias incluyendo unas 55 especies, algunas vivientes hoy en día en otras áreas del continente, mostrando un amplio espectro de masas corporales (desde pequeños roedores a megafauna) y adaptaciones tróficas y ambientales, sustentado en parte por estudios en algunos taxones de microdesgaste dentario e isótopos estables (Prevosti et al, 2009;Gasparini et al, 2013;Ghizzoni, 2014;Manzuetti et al, 2018bManzuetti et al, , 2020aManzuetti et al, , 2020bMorosi y Ubilla, 2018Corona et al, 2019b;Ghizzoni et al, 2020). Varios taxones de aves han sido registrados para estos sedimentos, tales como el cauquén Cloephaga picta (Gmelin, 1789), la seriema Cariama cristata (Linnaeus, 1766), horneros identificados como cf.…”

Section: Faunas Del Pleistoceno Tardíounclassified

Vertebrados Del Cuaternario Continental De Uruguay: Cronología Y Ambientes

Ubilla

Perea

2023

PEAPA

View full text Add to dashboard Cite

Resumen. se proporciona una breve síntesis crítica en relación a estudios seleccionados de vertebrados continentales cuaternarios de Uruguay.su conocimiento se ha visto muy incrementado en diversidad del grupo dominante en el registro-los mamíferos-pero también en el de varios grupos de aves. El control temporal tiene en cuenta el esquema cronoestratigráfico propuesto para la región pampeana como herramienta de correlación bioestratigráfica y por un creciente número de edades numéricas (radiocarbono, luminiscencia ópticamente estimulada). Los sedimentos en el norte de Uruguay, Formación sopas, exhiben un rico y variado contenido fosilífero. se correlaciona con el Piso/Edad Lujanense y las edades numéricas de varios afloramientos se incluyen en el rango del Piso Marino Isotópico 3 (MIs 3). Los vertebrados sugieren diversos tipos de ambientes tales como cuerpos de agua dulce con importante desarrollo, floresta riparia, floresta semiabierta y áreas abiertas, no descartándose microambientes áridos y semiáridos. En el sur de Uruguay, se expresa la Formación Dolores, correlacionada con el Lujanense y con edades numéricas preponderantemente en el rango que incluye al Ultimo Máximo Glacial y Holoceno Temprano. Condiciones de aridez o semiaridez favorecidas por las condiciones frías del Ultimo máximo Glacial explican la presencia de algunos mamíferos que actualmente no viven en Uruguay. En barrancas costeras del Río de la Plata (sur-oeste de Uruguay), aflora la Formación Raigón, considerada de edad pliocena, pero con elementos que indican Pleistoceno Temprano y Medio (mamíferos y edades de luminiscencia ópticamente estimulada en facies terminales). Los mamíferos referidos al Pleistoceno sugieren contextos ambientales abiertos a semiabiertos tanto en base a sus adaptaciones dentarias como a estudios isotópicos.Palabras claves. Cuaternario. Formación sopas. Formación Dolores. Pleistoceno. Uruguay.

show abstract

Estimación de la masa corporal de un ejemplar Cuaternario del carpincho extinto Neochoerus a través de medidas cráneo-dentales

Cited by 11 publications

References 30 publications

The accuracy and precision of body mass estimation in non‐avian dinosaurs

The accuracy and precision of body mass estimation in non‐avian dinosaurs

Big rodents disperse small seeds and spores in Neotropical wetlands

Vertebrados Del Cuaternario Continental De Uruguay: Cronología Y Ambientes

Contact Info

Product

Resources

About