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Ulyses Pardiñas

Ulyses Pardiñas
Consejo Nacional de Ciencia y Tecnología (CONICET)

Doctor of Philosophy

About

389
Publications
83,504
Reads
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6,046
Citations
Citations since 2016
155 Research Items
2688 Citations
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20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
20162017201820192020202120220100200300400500
Introduction
Trabajo en un abanico amplio de aspectos que hacen a la evolución de los roedores sigmodontinos (cricétidos), principalmente su registro fósil, anatomía y sistemática, subsidiariamente su valor como crono-indicadores, reconstrucción paleoambiental y biogeografía.

Publications

Publications (389)
Technical Report
Full-text available
Comments on the proposed conservation of Holochilus Brandt, 1835, Proechimys J.A. Allen, 1899 and Trinomys Thomas, 19121 (Mammalia, Rodentia) by the designation of H. sciureus Wagner, 1842 as the type species of Holochilus (Case 3121; see BZN 56: 255-261).
Conference Paper
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Un resumen expandido que da cuenta de la creación de la Colección de Material de Egagrópilas y Afines "Elio Massoia", primera en su tipo en Argentina, hoy día con más de 100 mil ejemplares catalogados.
Article
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This paper summarizes the research carried out in the counties of General La Madrid and Laprida an area in the north of the Buenos Aires plains bordered by two hill ranges (the Llanura Interserrana Bonaerense) covering over 1 million acres. The research activities included surveys which resulted in the placing of 70 sites, and stratigraphical excav...
Article
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MASSOIA, E. y PARDIÑAS, U. F. J. 1988. Análisis de regurgitados de Tyto alba tuidara de Camping Casa Amarilla, partido de Chascomús, provincia de Buenos Aires. Boletín Científico, Asociación para la Protección de la Naturaleza, 13: 22-24, San Miguel.
Article
Full-text available
MASSOIA, E. y PARDIÑAS, U. F. J. 1988. Pequeños mamíferos depredados por Bubo virginianus en Pampa de Nestares, Departamento Pilcaniyeu, Provincia de Río Negro. Boletín Científico, Asociación para la Protección de la Naturaleza, 3: 23-27, San Miguel.
Article
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Este es el primer registro holocénico de los cricétidos Bibimys y Pseudoryzomys documentado en la provincia de Buenos Aires, en el sitio arqueológico Cueva Tixi.
Article
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La revisión de algunos cricétidos fósiles de la Colección Ameghino, entre los cuales el género Bothriomys resultó ser un sinónimo senior de Graomys, pero se evitó el reemplazo nomenclatorial (que hubiera sido atendible por criterio de prioridad)
Conference Paper
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Este es el primer planteo formal, con datos paleontológicos, sobre el cambio de las comunidades de pequeños mamíferos en la región pampeana de Argentina producto del interjuego entre eventos climáticos tardíos e impacto antrópico
Article
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Presas de Bubo virginianus en Cueva Epullán, Departamento Collón Cura, Provincia de Río Negro -I-. Boletín Científico, Asociación para la Protección de la Naturaleza, 7: 17-27, San Miguel.
Article
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Nuevos cráneos de mamíferos fósiles argentinos -2- Paedotherium typicum en la Barranca de Los Lobos, partido de General Pueyrredón, provincia de Buenos Aires y mastofauna asociada. Boletín Científico, Asociación para la Protección de la Naturaleza, 10: 11-15, San Miguel.
Article
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Algunos datos sobre la dieta mastofaunística de Tyto alba en Salinas del Bebedero, Departamento La Capital, provincia de San Luis. Boletín Científico, Asociación para la Protección de la Naturaleza, 2: 8-12, San Miguel.
Article
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Nota sobre la fauna de pequeños roedores de Valle Hermoso, Departamento Escalante, provincia de Chubut. Boletín Científico, Asociación para la Protección de la Naturaleza, 11: 13-15, San Miguel.
Article
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Presas de Bubo virginianus en Cañadón Las Coloradas, Departamento Pilcaniyeu, Provincia de Río Negro. Boletín Científico, Asociación para la Protección de la Naturaleza, 4: 14-19, San Miguel.
Conference Paper
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Un resumen de una exposición, en las antiguas reuniones anuales de comunicaciones de la Asoc Paleontológica Argentina
Article
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Revista Azara (ISSN 2683-7692) 2022 (10):56-62. La costa atlántica bonaerense es un ambiente sumamente dinámico, sujeto a intensas fuerzas naturales que determinan un frágil equilibrio. En ella, no solo confluye el mar y la tierra, sino también una diversidad biológica única junto a un invaluable patrimonio arqueológico y paleontológico, que está s...
Article
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The genus Calomys includes several species that have very similar external morphologies, which often leads to confusing field identification and has resulted in conflictive taxonomic histories. One of its clades involves large‐sized body forms, known as the Calomys callosus complex. In a previous study, a biogeographic hypothesis was proposed to ex...
Article
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Rhagomys is a genus of South American cricetids composed of three living species. They occur in eastern Andean and lowland tropical forests. Since description of this genus more than a century ago, it was treated as an enigmatic form within Sigmodontinae, varyingly thought to be allied to different suprageneric groups, with several scholars highlig...
Article
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The Andean cloud forests of Ecuador are home to several endemic mammals. Members of the Thomasomyini rodents are well represented in the Andes, with Thomasomys being the largest genus (47 species) of the subfamily Sigmodontinae. Within this tribe, however, there are genera that have escaped a taxonomic revision, and Chilomys Thomas, 1897, constitut...
Article
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The South American rodent genus Ctenomys is well represented throughout much of southern Patagonia by the polytypic “magellanicus” lineage. In western Argentina, members of this lineage occur from 35 °S to 54 °S latitude. In comparison, the taxonomy of Ctenomys in northeastern Patagonia remains poorly known. This ∼160,000 km² region consists primar...
Article
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Aim: Comprehensive, global information on species' occurrences is an essential biodiversity variable and central to a range of applications in ecology, evolution, biogeography and conservation. Expert range maps often represent a species' only available distributional information and play an increasing role in conservation assessments and macroeco...
Article
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The diversity of the oryzomyine rat Mindomys (Cricetidae, Sigmodontinae, Oryzomyini), is doubled here with the description of a new species from the remote Cordillera de Kutukú (Ecuador). The novel form can be easily differentiated from Mindomys hammondi-type species of the genus-by a large set of anatomical traits including, among others, larger j...
Article
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Cueva Huenul 1 site, located in the extreme north of Neuquén Province, is notable for a paleontological component with extinct megafauna in the Late Pleistocene (~16.6 ka cal BP) and three archaeological components that cover, discontinuously, the Holocene. The site presents small mammals in the four components. Previously, 1426 well-preserved spec...
Article
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The monotypic genus Salinomys (Cricetidae, Sigmodontinae) includes tiny mice with specialist adaptations to desert habitats characteristic of Argentinian shrubland. We report on a population of Salinomys delicatus from Central La Pampa Province, Argentina, representing a 450 km southerly extension to its known distribution. Importantly, this stress...
Article
We conducted the first taphonomic and paleoenvironmental study based on late Pleistocene-Holocene small mammal remains recovered from the famous Mylodon Cave (Cerro Benítez area, Última Esperanza, Chile). Most of the analyzed material came from the extensive excavations made by Earl Saxon in 1976. We also studied late Holocene small mammal samples...
Article
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In the Andean portion of northern Patagonia, populations of Ctenomys are found from low-elevation plains to high-elevation meadows and valleys. Despite their prevalence, the taxonomy of these subterranean rodents remains poorly resolved. Using genetic and morphological data obtained from museum specimens and animals collected in the field, we exami...
Article
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Una breve correspondencia donde, a partir de una identificación taxonómica incorrecta sobre material arqueológico caribeño, se resignifica la posibilidad de introducción de múridos exóticos en épocas pre-hispánicas.
Article
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One of the largest members of Sigmodontinae, the extinct Megaoryzomys curioi from Santa Cruz Island in the Galápagos Archipelago (Ecuador), is traditionally treated as a representative of Thomasomyini. We contrasted this hypothesis based on a direct study of craniodental material of M. curioi, including a well-preserved skull assessed through CT-sc...
Article
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The monotypic rodent Mindomys Weksler, Percequillo & Voss, 2006 (Cricetidae, Sigmodontinae) is one of the rarest members of the speciose tribe Oryzomyini. As this species is restricted to the Chocó forests of the western Andean slope in northern Ecuador, our knowledge is based on a few specimens collected decades ago. Here we add the first data on...
Article
Full-text available
Most of the contemporary debate about the origin and early diversi cation of sigmodontine rodents, the most diverse living subfamily of cricetids, is based on the analysis of molecular evidence. In order to promote interest and highlight the importance of fossil evidence, we conducted a critical review of the paleontological record for this group o...
Article
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Based on various resources, the original collection localities for ve species of rodents whose type specimens were collected by Thomas Bridges during the 19 th century are discussed. The taxa examined are the caviomorph species Aconaemys fuscus and Ctenomys pontifex, and the cricetids Abrothrix hirta, Euneomys mordax, and Paynomys macronyx. A. fusc...
Preprint
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En este preprint presentamos un breve comentario originado a partir de una identificación taxonómica errónea que puede traer luz sobre la cronología del ingreso de los múridos en América. Espero que les resulte interesante y, como siempre es el caso de los preprints, cualquier sugerencia, comentario, corrección será atendido. Muchas gracias.
Preprint
Full-text available
En este preprint, que nos enorgullece presentar a los colegas (para recibir los comentarios, críticas, adiciones, correcciones que deseen hacernos, a fin de enriquecerlo) distinguimos al enigmático género Rhagomys con una nueva tribu, a la par que ponemos en evidencia sus características únicas en el contexto de los Oryzomyalia. Más aún, proponemos...
Poster
Laelaps mazzai is a species with five different morphotypes, each one related to their own rodent host species Non-Cognitive Predictors of Student Success: A Predictive Validity Comparison Between Domestic and International Students INTRO • Laelaps mazzai is a mite with poorly studied morphology and taxonomic status, a few studies have been associa...
Article
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The vertebrate fossil record of the Pampean Region of Argentina occupies an important place in South American vertebrate paleontology. An abundance of localities has long been the main basis for constructing the chronostratigraphical/geochronological scale for the late Neogene–Quaternary of South America, as well as for understanding major patterns...
Article
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There have been only a very few collections of small mammals in the Misiones Province, Argentina, a fact that is reflected not only in a poor general knowledge of the sigmodontine rodent assemblages but also in their conservation status (i.e., many are characterized as data deficient). In this contribution, which partially follows the style of a “d...
Article
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Subterranean rodents Ctenomys are iconic representatives of the mammalian fauna from southern South America. Based on molecular data, eight lineages have been identified within the genus, although species-level identifications and relationships are still debated. Until now, the “ magellanicus ” clade has been the only lineage mentioned from arid, e...
Article
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While hypsodonty mostly is associated with medium to large body sizes in sigmodontine rodents, highcrowned molars combined with small bodies rarely are recorded. This latter condition is present in Neomicroxus (Sigmodontinae, incertae sedis), a genus of high-Andean cricetids also characterized by a noticeable set of cranial traits, including enlarg...
Article
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We re-evaluate the tribal allocation of Olympicomys vossi, an extinct member of Sigmodontinae (Rodentia, Cricetidae). Originally described from fragmentary jaws, this taxon was considered as a Phyllotini. In light of new remains, including hemimandibles and for the first time an anterior part of the cranium with the upper dentition, we propose that...
Preprint
Full-text available
Dando continuidad a esta línea que nos hemos planteado de compartir (máxime en estos tiempos tan duros que nos tocan) nuestras investigaciones ni bien son generadas, en forma de pre-print, acá presentamos un estudio donde hemos combinado la descripción de un magnífico nuevo representante de la tribu Oryzomyini de la remota Cordillera de Kutukú, en...
Preprint
Full-text available
The monotypic genus Salinomys (Cricetidae, Sigmodontinae) includes tiny mice with specialist adaptations to desert habitats characteristic of Argentinian shrubland. We report on a population of Salinomys delicatus from Central La Pampa Province, Argentina, representing a 450 km southerly extension to its known distribution. Importantly, this stress...
Article
We present a topological analysis of the third upper molars (M3) using the recently developed ICAMER nomenclatural system as a way to understand the dental morphological similarity in sigmodontine rodents, the most speciose subfamily of cricetids. The method is explored in Scapteromys aquaticus and Abrothrix olivacea, taxa belonging to two diverse...
Article
Full-text available
Based on a variety of evidence (photographs, feces, specimens), three previously unsuspected cav-iomorph rodents are reported from Argentina: (1) a spiny rat (Echimyidae) probably belonging to the genus Phyll-omys, in northern Misiones Province near Iguazú National Park; (2) an undetermined octodontid (Octodontidae) in western Chacoan Córdoba Provi...
Article
Full-text available
The Andean cloud forests of western Colombia and Ecuador are home to several endemic mammals; members of the Oryzomyini, the largest Sigmodontinae tribe, are extensively represented in the region. However, our knowledge about this diversity is still incomplete, as evidenced by several new taxa that have been described in recent years. Extensive fie...
Preprint
Full-text available
Nuevamente, nos place presentar, como pre-print, este manuscrito (recién enviado a competir por publicación) sobre los roedores fósiles de la mítica Cueva del Milodón (Chile) y su significación paleoambiental. Como de costumbre, sera para nosotros grato recibir cualquier comentario crítico. Muchas gracias, saludos cordiales, Ulyses
Book
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Copia de galera final de este libro sobre la fauna reciente de Patagonia, esfuerzo original conjunto con J.C. Chebez (al que se sumara ulteriormente mi doctorando P. Teta), con el valioso aporte fotográfico de D. Podestá y otros. Como el libro está agotado y ya han pasado varios años, me parece que compartir esta copia quasi final puede ser interes...
Article
Full-text available
The rare cricetid rodent Bibimys Massoia, 1980 contains three extant species that are distributed in the lowlands of eastern South America between 35°S and 20°S and distinguished mostly by subtle morphological and genetic features. Several fragmented jaws belonging to this genus were recovered from Late Quaternary deposits located in northeastern B...
Preprint
Full-text available
Nos es grato mostrar a los colegas este nuevo preprint. Esperamos sus opiniones para enriquecerlo. Muchas gracias. ABSTRACT. Most of the contemporary debate about the origin and early diversification of sigmodontine rodents, the most diverse living subfamily of cricetids, is based on the analysis of molecular evidence. In order to promote interest...
Article
We provide a new morphological description of the holotype and a previously undescribed large sample of the type species of the genus Copemys Wood, 1936, Copemys loxodon (Cope, 1874a), a Miocene North American cricetid rodent occasionally treated as the ancestor of the non-arvicoline cricetids (i.e., neotomines, sigmodontines, and tylomyines). Dent...
Article
Full-text available
Neomicroxus, a recently named genus, comprises small-bodied cricetid rodents patchily distributed in high-Andean ranges from Ecuador to Venezuela. Currently, two species of Neomicroxus are recognized, N. bogotensis, endemic to the Cordillera Oriental in Colombia and Cor-dillera de Mérida and Páramo de Tamá in Venezuela, and N. latebricola that occu...
Chapter
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Como resultado de un ambicioso proyecto conjunto entre paleontólogos españoles, italianos y argentinos, allá a inicios de los 90, resultó este libro donde un joven Pardiñas intentó una síntesis sobre el conocimiento de los cricétidos fósiles sudamericanos...
Article
The Pampa biogeographic province covers a mere 2% of the Brazilian territory (176,496 km²). However, it stands out as a complex and diverse ecosystem, although its mammal communities are still scarcely understood. Human activities are transforming the territory into a mosaic of agroecosystems, native and exotic forest fragments, and grasslands. Her...
Article
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En este primario trabajo se discuten las rasgos tafonómicos y taxonómicos de unos ensambles de vertebrados del sudoeste de la provincia de Buenos Aires, con edad radiocarbónica Holoceno temprano. Los mismos parecen indicar condiciones áridas, algo más áridas que las actualmente verificadas en la región.
Preprint
Full-text available
Nos hace felices poner a disposición de los colegas este nuevo pre-print (es decir, una investigación recién terminada y aún no aceptada en ningún medio de publicación). Acá damos a conocer el primer registro para Spalacopus en Argentina, a la par de lo que consideramos es el primer registro de Phyllomys para este mismo país, más un octodóntido eni...