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This contribution describes new vertebrate remains found in Triassic strata informally known as “Estratos ElBordo”, in the Atacama Desert, northern Chile. These include the first temnospondyl record in the El Bordo B...

Abstract Ticks parasitizing 102 wild animals in the states of Mato Grosso and Goiás, Brazil were collected between 2015 and 2018. A total of 2338 ticks (865 males, 541 females, 823 nymphs, and 109 larvae) belonging to f...

Fossils collected by Abel Peirano from Catamarca and Tucumán in the late 1930s constituted the basis for the creation of the Colección Paleontología de Vertebrados Lillo (PVL) in Tucumán. The collection was formally ...

Materias / palabras clave: Ciencias; Ciencias naturales; Biología; General; Science; Life sciences; Biology; Zoología; Cordados; Vertebrados; Mamíferos; Zoology; Chordates; Vertebrates; Mammals; General works

Materias / palabras clave: Ciencias; Ciencias naturales; Biología; General; Science; Life sciences; Biology; Zoología; Cordados; Vertebrados; Mamíferos; Zoology; Chordates; Vertebrates; Mammals; General works

The Bryn Gwyn (Chubut Province, Patagonia, Argentina) is a classic fossiliferous site, long recognised for its Cenozoic vertebrate record. However, its invertebrate content remains poorly documented. The Lower Miocene Ga...

Two biogeographical units are generally recognized in the present shelf area of Argentina: the Magellanian andArgentinian Provinces. The two provinces differ in their fossil record. The evolution of these provinces has b...

Materias / palabras clave: No

ABSTRACT The present study carried out to explore the anatomical morphology and histological structure, as well as some histochiemical aspects of the retina in Mabuya aurata lizard which is a carnivorous animal. On the o...

How prehispanic foragers adjusted their foraging activities to plant cultivation is a question that drives much of the modern archaeological research. As a result, the spread of food-producing economies during the Late P...

Over more than six decades of dedicated research, Chang Meemann’s career has spanned a critical era marked by a paradigm shift in vertebrate evolution studies. Beginning in the 1950s, inspired by the pioneering ichthyo...

The interaction between native and exotic species can cause changes both in the food-chain and in aspects of competition for trophic resources, such as predation. Predatory events are common in nature, but difficult and ...

Glucocorticoids participate in the behavioral and physiological responses generated under stressful circumstances coming from different sources—physical and/or psychological. In mammals, the increases of these hormones...

Abstract The study of the diversity of tick-borne agents in wild animals enables a better understanding of the distribution of pathogens in the country, the identification of potential reservoirs for these agents, the ma...

New findings of early vertebrates, including placoderms, sarcopterygians, and the galeaspids Sanqiaspis rostrata, Macrothyraspis longicornis, Gantarostraspis gengi, Wenshanaspis sp., are described from Posongchong Format...

Bile acids in fish, as in other vertebrates, represent a complex metabolic system the composition of which depends on species, age, diet, and environmental conditions. Their ratio is closely associated with enterohepatic...