Mauro Bruno da Silva Lacerda

Federal University of São Carlos | UFSCar · Departamento de Ecologia e Biologia Evolutiva (DEBE)

Spinosauridae presents an extensive geographical and temporal distribution, with records from Gondwana and Laurasia, and a temporal range from Barremian (~129 Ma, Lower Cretaceous) to Cenomanian (~95 Ma, Upper Cretaceous). To date, 13 species were described, besides several specimens identified at a broader taxonomic level. One of the most notable...

We report the first occurrence in South America of spinosaurid specimens belonging to the clade Baryonychinae. The material comprises three tooth crowns recovered from the Lower Cretaceous (Berriasian–Valanginian) of the Feliz Deserto Formation, State of Sergipe, northeast Brazil. The three specimens have the typical conidont condition, displaying...

During the Mesozoic, non-avian theropods represented one of the most successful clades globally distributed, with a wide diversity of forms. An example is the clade Megalosauroidea, which included medium- to large-bodied forms. Here, we analyse the macroevolution of the locomotor system in early Theropoda, emphasizing the Megalosauroidea. We scored...

Piatnitzkysauridae were Jurassic theropods that represented the earliest diverging branch of Megalosauroidea, being one of the earliest lineages to have evolved moderate body size. This clade's typical body size and some unusual anatomical features raise questions about locomotor function and specializations to aid in body support; and other palaeo...

The Kem Kem Group is a lowermost lithostratigraphic unit from the Upper Cretaceous that extends along the border between Algeria and Morocco, in the northern region of Africa. This geological unit has yielded several tetrapod fossils, including a well-represented assemblage of theropod dinosaurs, after more than eight decades of research. Here, we...

Troglobites are highly adapted species exclusive to subterranean life. Due to the discontinuous characteristic of subterranean habitats, the morphological study of such species with a wide geographic distribution becomes especially important to evaluate phenomena such as intraspecific variations. Charinus troglobius is an example of troglomorphic s...

The Feliz Deserto Formation (Berriasian–Valanginian, Sergipe-Alagoas Basin, NE Brazil) preserved some of the earliest South American fossil records of the rifting stages which resulted in the Gondwana supercontinent break-up during the Lower Cretaceous. Recently, the first spinosaurid theropod record of this formation was described, based on a toot...

A Formação Feliz Deserto preservou alguns dos registros iniciais do rifteamento que fragmentou o Gondwana. Recentemente foi reportada a primeira ocorrência de Spinosauridae de um afloramento (Canafístula 01) às margens da rodovia SE–202 (Japoatã, Sergipe). Reportamos novos materiais desta localidade, incluindo um fragmento de falange de Theropoda e...

Phrynus barbadensis es un amblypygido, ampliamente distribuida en América del Sur y Central. Una de las principales características diagnósticas, son los gonópodos femeninos, con dos escleritos anchos en su base con la presencia de receptáculos seminales dirigidos ventralmente. Debido a su amplia distribución, se ha registrado, una amplia variación...

The Solimões and Acre basins are complex geological units related to the Andean uplift, covering the Northwestern region of Brazil, being one of the most important units due to their fossil diversity. In order to produce a document that integrates part of the fossil records of this region, we compiled/georeferenced localities from literature on whi...

The Solimões Formation (Eocene-Pliocene) is a well-known geological unit due to the great diversity of crocodylian species. Here we describe a new species of Melanosuchus, M. latrubessei sp. nov., from the Talismã locality, state of Amazonas, from the Upper Miocene of the Solimões Formation (Solimões Basin, Brazil). A new phylogenetic inference foc...

The Tartaruguito outcrop (Pirapozinho municipality, Presidente Prudente Formation, Bauru Basin) has been considered a Fossil-Lagerstätte due to its exceptional fossil quality and large number of fossils recovered. Despite its historical and paleontological importance, a geochemical composition study of the fossils from this site and their sedimenta...

Here we describe fossil vertebrate remains from a new Solimões Formation (Eocene-Pliocene) locality, near the highway BR 364 at Sena Madureira municipality (Acre, Brazil). The findings comprise more than forty-four isolated fragments from which twenty-three specimens could be properly identified anatomically and systematically. The materials includ...