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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 ...

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...

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 ...

Deficiency of adenosine deaminase 2 (DADA2) was identified in 2014 as a novel inborn error of immunity caused by biallelic pathogenic variants in ADA2. DADA2 patients express two predominant clinical phenotypes: (1) auto...

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...

Caimans of the species Caiman latirostris, which are widely distributed in South America, are opportunistic predators. They show ontogenetic variation in diet, with young individuals initially feeding on invertebrates an...

Abstract The ability of organisms to learn and remember is crucial for their survival. This cognitive ability spans a wide range of organisms, including both vertebrates and invertebrates, yet has remained little studied...

Leposternon microcephalum is a terrestrial amphisbaenid found in open and semi-open habitats in Bolivia, Paraguay, Argentina, Uruguay, and Brazil (Pérez and Ribeiro 2008. Check List 4:291–294). They are reported to be...

Abstract Objective The study aimed to evaluate the hypoxia-induced brain injury and neuroprotective effects of pyrimidine and its derivative, arylvinylpyrimidine (AVP), in the freshwater catfish, Heteropneustes fossilis....

ABSTRACT More than 300 species have been described in the genus Hepatozoon, occurring in different vertebrates. Among these, only Hepatozoon canis and Hepatozoon americanum are seen in dogs. Different methods may be used...

Absctract Eustrongylides spp. nematodes have birds as final hosts and uses other vertebrates as intermediate/paratenic host (fish, amphibians and reptiles) and have zoonotic potential. In amphibians, the larvae may be lo...

ABSTRACT The pineal is a neuroendocrine gland responsible for the synthesis and release of melatonin. It is present in the brain of vertebrates, but its morphology and location vary considerably among species. For the sp...

Terrestrial Triassic assemblages are an important component of the heritage of Argentina, particularly because of their diverse record of fossil vertebrates. Triassic basins from western Argentina have a good representat...

Abstract Fasciola hepatica is a parasite that affects the hepatic ducts of several species of domestic and wild vertebrates, causing huge economic losses to livestock rearing worldwide. Reports on occurrences of F. hepat...

IGM 9026 is a singular fossil collected at the beginning of the 20th century in an improperly documented site within the Tlaxiaco Basin, near to Tlaxiaco town, Oaxaca, Mexico. The age of the site was suggested as being e...

Abstract Parasites of the phylum Apicomplexa are among the main etiological agents of diseases in vertebrates and invertebrates, including humans and domestic animals. In the present study, 18 specimens of Pygocentrus na...