Raúl Ignacio Vezzosi- Dr. in Natural Sciences. Researcher in CONICET (Argentina) and Professor of Paleontology and Earth Sciences (FCyT-UADER)..
- Professor (Associate) and Research (CONICET) at National Scientific and Technical Research Council
Raúl Ignacio Vezzosi
- Dr. in Natural Sciences. Researcher in CONICET (Argentina) and Professor of Paleontology and Earth Sciences (FCyT-UADER)..
- Professor (Associate) and Research (CONICET) at National Scientific and Technical Research Council
Argentinian Researcher and University professor of Paleontology with knowledge in Quaternary and Neogene Vertebrate.
About
48
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Introduction
I work at the Vertebrate Paleontology Lab in CONICET, professor of Paleontology in FCyT-UADER.
I research in Paleontology, Paleobiology and Evolutionary Biology.
Current projects:
-Systematic and Phylogeny of American fossil and living deers
-Quaternary continental vertebrates from austral Chaco, Northern and Southern Pampa
-Assessment of the geological risk in Santa Fe and Cordoba provinces (Argentina), applied to the problem of floods
-Geo/Paleontology from Paleo-Neogeno of NOA
Current institution
Current position
- Professor (Associate) and Research (CONICET)
Publications
Publications (48)
Bone pathologies have great potential to provide information on the palaeobiology of fossil organisms. Some were likely related to inter/intraspecific fighting behaviors. Among the iconic and conspicuous Late Pleistocene armored mammals, Panochthus Burmeister, 1866 is notable for being one of the largest, most abundant, and diversified genera. A pa...
LISTADO PRELIMINAR PALEOFAUNÍSTICO DE LA FORMACIÓN RÍO NÍO (EOCENO),
TUCUMÁN, ARGENTINA
Nearctic ungulates such as artiodactyls, perissodactyls, and proboscideans arrived in South America during the Great American Biotic Interchange. Among them are camelids, cervids, tayassuids, equids, tapirids and gomphotherids. A historical collection of Nearctic ungulates from Pleistocene deposits of the Pampean region in Argentina is here studied...
This contribution studies some paleobiological aspects of Opisthodactylus kirchneri, a fossil rheid from the Late Miocene of northwestern Argentina. We estimate the body mass of this species using an allometric equation based on long-legged birds. Besides, we estimate the maximum running speed by applying a previously published biomechanical model...
Sloths represent one of the most successful South American clades that reached North America during the Great American Biotic Interchange (GABI). At least four families are known from the Pleistocene of North America: Mylodontidae, Megalonychidae, Megatheriidae, and Nothrotheriidae. Members of the Nothrotheriidae are known from the Middle Miocene t...
A skull of a fossil adult euphractine armadillo collected near San Ramón (Canelones department) is described. The specimen comes from the Lujanian deposits of the Dolores Formation (Upper Pleistocene-Greenlandian) in Uruguay. The skull is very similar to Chaetophractus villosus and Euphractus sexcinctus but is smaller and differs from the latter in...
A new material of a Quaternary waterfowl is described here. The implications of this finding, in the context of the dispersal of Anatidae in the past, are discussed. The specimen consists in a partial humerus coming from the Upper Pleistocene of austral Chaco from Santiago del Estero Province, Argentina. The specimen here described belongs to the t...
The tribe Myocastorini (Caviomorpha, Echimyidae) currently comprises living species inhabiting Central America from Honduras and extending throughout South America to Patagonia, in a wide variety of environments. This clade is well represented in the late Miocene-Pleistocene fossil beds of central and northern Argentina. Its diversification at high...
Los afloramientos paleógenos-neógenos del norte de la provincia de Tucumán forman parte de tres provincias geológicas: las Sierras Pampeanas (centro-oeste), Sistema de Santa Bárbara (noreste) y Llanura Chaqueña (este). Esta sucesión cenozoica está compuesta por cuatro unidades litoestratigráficas: Formación Río Loro (Paleoceno), Fm. Río Nío (Eoceno...
ON THE CRANIAL ANATOMY OF MORENELAPHUS (CARETTE 1922) (MAMMALIA, CERVIDAE) AND ITS RELATIVES: STUDY OF THE ANATOMY OF THE BRASICRANIUM.
Among South American fossil deer, Morenelaphus is the most conspicuous genus from the Pleistocene beds of Argentina. However, its fossil record in South America is almost known only by antlers, the anatomy of the...
The first unequivocal records of teratornithid birds from the Pleistocene of South America are here described, adding a new member, and the largest, to this highly diversified guild of large carnivorous flying birds that lived during these times in the Americas. The new specimens come from four fossiliferous localities of Central Argentina that ran...
The tragic fire at the National Museum (Brazil) in September 2018 caused invaluable losses to South American natural and cultural heritage. However, previous visits to the paleontological collection generated photographic and descriptive records of mammalian fossil specimens from the Pleistocene of Brazil. Thus, it was possible to redescribe and re...
Here it is reviewed the cotype of the ground-sloth Nothrophus cararanensis Bordas, 1942, and proposed that it should be taxonomically relocated to the extinct deer Morenelaphus. The specimen in question is represented by a fragmentary braincase, that shares several features with Cervidae and, more detailed with Morenelaphus. Besides antler morpholo...
The fossil record of South American cathartids, with few exceptions, is largely restricted to Late Pleistocene and Holocene sites. This contribution provides for the first time fossil records of cathartids from Uruguay. The specimens reported here include an; almost complete fibula, an incomplete furcula, and the distal end of a tibiotarsus. The; f...
The Chaco Region is the third biogeographic and morpho-structural territory of South America after the Amazon and Cerrado savannahs. This region is one of the few areas in the world where the transition from the tropics to temperate zones does not consist of a desert but of semi-arid woodlands and savannahs. The modern biodiversity patterns of the...
The Chaco Region is the third biogeographic and morpho-structural territory of South America after the Amazon and Cerrado savannahs. This Region is one of the few areas in the world where the transition from the tropics to temperate zones does not consist of a desert but of semi-arid woodlands and savannahs. The modern biodiversity patterns of the...
Se presenta aquí el estado de avance de un volumen a titular "Geología y Paleontología del Cuaternario de la Provincia de Santa Fe". El proyecto está destinado a ofrecer a los naturalists de Santa Fe y otros interesados algunos materiales de difícil acceso, que se han publicado en congresos y revistas internacionales y extranjeras, tesis doctorales...
THE QUATERNARY FOSSIL RECORD FROM SANTA FE (ARGENTINA): A FIRST UPDATE. The study of fossil vertebrate and its stratigraphy from the Pleistocene of Santa Fe has recently experienced an important advance. Most of these records are mammals and less frequently fishs, birds and reptiles.The vertebrate assemblages come from three geomorphological region...
Antifer es el cérvido más grande para el Cuaternario de América del Sur, conocido hasta
la fecha solo por sus astas. Presentamos aquí el primer molde endocraneano de este
taxón, en base a tomografías computadas del neurocráneo de un individuo adulto (MRS
202) con volteo completo. El mismo proviene del Pleistoceno Tardío (edades OSL 84-
95 ka AP) de...
The aim of this contribution is to describe a femur (MCRS 199) assigned to Nothrotheriops sp. from the Late Pleistocene of Santa Fe Province (Argentina), and discuss the implications of this find in the context of the dispersal of ground sloths during the Great American Biotic Interchange. The specimen MCRS 199 is smaller than the femora referred t...
In this contribution the record of a Nothrotheriinae (Xenarthra, Tardigrada) ground sloth is reported from the Late Pleistocene of the Northern Pampa of Santa Fe Province, Argentina. The stratigraphic unit where the fossil was collected corresponds to fluvial-palustrine sediments of the Timbúes Formation, outcropping along the Carcarañá River valle...
Los reportes sobre hallazgos de paleofauna cuaternaria, como así también trabajos con enfoques multidisciplinarios en la región centro-norte de Argentina, son escasos. Teniendo en cuenta esa problemática hemos iniciado un estudio geológico y paleontológico de los sedimentos aflorantes en el Río Dulce (Departamento Río Hondo, provincia de Santiago d...
The South American porcupines (Erethizontidae) are included in two genera: Chaetomys and Coendou. The latter is a very speciose taxon, with about 13 living species. During at least the late Pliocene–early Pleistocene, erethizontids immigrated to Central and North America during the Great American Biotic Interchange. Although some Pleistocene fossil...
The record of an opossum is reported here coming from a Middle–Late Pleistocene fluvial sedimentary sequence outcropping in the austral Chaco geomorphological region, Santa Fe province. Despite this family has different living forms widely distributed in South American plains, with great tolerance to diverse habitats conditions, the Pleistocene occ...
A new species of rheid, Opisthodactylus kirchneri, sp. nov., is erected on the basis of associated elements of
both hind limbs from the late Miocene in northwestern Argentina. The new species extends the biochron of Opisthodactylus from early Miocene to late Miocene and its distribution from Patagonia to northwest Argentina. Cladistic analysis reco...
Vallone, E.R., Vezzosi, R.I. & Cione, A.L. February 2017. First fossil fish (Teleostei, Siluriformes) from the Late Pleistocene of Santa Fe Province, Argentina. Alcheringa 00, 000–000. ISSN 0311-5518.
The record of fossil fish from the Pleistocene of Argentina is poor. Here we describe the first ichthyofauna from Late Pleistocene riverbank beds in...
A new record of a middle-sized terror bird from northwestern Argentina is reported based on associated and fragmentary limb elements of a single specimen. The latter belongs to old collections of the MUFYCA (Ex-Instituto de Fisiografía y Geología) of Rosario city, Argentina, and remained unstudied since its finding during the 1940s. The specimen co...
Abstract
The Pleistocene mammal fauna is widely represented at different deposits from South America (Argentina, Bolivia, Brazil, Chile, Paraguay, Perú, Uruguay and Venezuela), including a lot of vertebrate species which are recorded since 2.58 M.Y. to 10.000 Y.B.P. Although the number of taxa reported from Pleistocene times is great, most finding...
The Neotropical otter (Lontra longicaudis, Mustelidae, Carnivora) is defined as a generalist carnivore.
Although it is a fish-crustacean feeder, rodents are commonly found in its diet, though less frequently.
In order to learn about the effects that this predator produces on its prey’s bones, we conducted taphonomic
analysis of bone remains from sc...
We studied the Neotropical otter (Lontra -longicaudis) seasonal diet variations in the middle Parana River valley, in central-northern Argentina, at the southern limit of its global range. We recorded 745 prey items in 320 scats collected over the course of 1 year in a tributary stream of the Parana River. Fish, crustaceans, mammals, and insects we...
SIZE AND BODY MASS IN PROCARIAMA SIMPLEX ROVERETO, 1914 (AVES: PHORUSRHACIDAE: PSILOPTERINAE). Body-mass of fossil birds can be estimated using comparisons with extant birds, taking into account that the measures of hindlimbs are indicators of body weight. Hindlimb bones (femur, tibiotarsus, and tarsometatarsus) would represent a direct relationshi...
Vezzosi, R.I., iFirst article. First record of Procariama simplex Rovereto, 1914 (Phorusrhacidae, Psilopterinae) in the Cerro Azul Formation (upper Miocene) of La Pampa Province; remarks on its anatomy, palaeogeography and chronological range. Alcheringa, 1–13. ISSN 0311-5518.New records of Procariama simplex in central and northwestern Argentina a...
The oldest fossil record of Tayassuidae in South America dates of the middle Pliocene (Buenos Aires. Argentina). Since the Pleistocene a significant increase in taxonomic diversity occurred, recorded by numerous discoveries in Argentina, Brazil. Uruguay and Bolivia. Nowadays. at least three extant species are recognized: Tayassu tajacu (Linnaeus),...
El registro paleontológico más antiguo de Tayassuidae en América del Sur se remonta al Plioceno medio (Buenos Aires, Argentina). A partir del Pleistoceno se produce un notable incremento en la diversidad taxonómica, registrándose numerosos hallazgos en Argentina, Brasil, Uruguay y Bolivia. Actualmente, se reconocen al menos tres especies vivientes:...
The oldest fossil record of Tayassuidae in South America dates of the middle Pliocene (Buenos Aires, Argentina). Since the Pleistocene a significant increase in taxonomic diversity occurred, recorded by numerous discoveries in Argentina, Brazil, Uruguay and Bolivia. Nowadays, at least three extant species are recognized: Tayassu tajacu (Linnaeus),...
