A5066027404- Paleontology and Evolutionary Biology
- Evolution and Paleontology Studies
- Ichthyology and Marine Biology
- Fish biology, ecology, and behavior
- Oral and Maxillofacial Pathology
- Paleontology and Stratigraphy of Fossils
- Amphibian and Reptile Biology
- dental development and anomalies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Linguistics and Language Studies
- Cultural, Media, and Literary Studies
- Bone and Dental Protein Studies
Universidade Federal de Santa Maria
2025
Associação Brasileira de Antropologia
2020-2022
Universidade Luterana do Brasil
2010-2019
Universidade Federal do Vale do São Francisco
2016
Universidade Federal do Rio Grande do Sul
2009
An exceptional new specimen (CAPPA/UFSM 0035) of Buriolestes schultzi was discovered during recent fieldwork at the type locality taxon, which is Carnian in age (Late Triassic). This early sauropodomorph peculiar owing to its faunivorous feeding habits, unusual amongst members this large omnivorous/herbivorous clade. The incorporates data on skeletal portions that have so far been unknown for B. schultzi, particularly regarding skull and axial skeleton. As such, now as complete best-known...
Abstract Traversodontidae, a clade of gomphodont cynodonts, thrived during the Middle and Late Triassic, displaying wide geographical distribution. During fieldwork in 2009, new specimen was discovered Ladinian/early Carnian stratigraphic layers southern Brazil. Here, we describe this propose taxon closely related to Traversodon stahleckeri (Traversodontinae) but unique combination traits (e.g., presence poorly developed suborbital process, mesiodistal length paracanine fossa similar canine,...
Aetosaurs are armored pseudosuchian archosaurs widespread in Upper Triassic units. In South America, four taxa were previously recorded: Aetosauroides scagliai, Neoaetosauroides engaeus, Aetobarbakinoides brasiliensis, and Chilenosuchus forttae. Herein we describe a new Late juvenile aetosaur from the Santa Maria Formation of southern Brazil, Polesinesuchus aurelioi gen. et sp. nov., increasing paleobiodiversity this interesting group to five Western Gondwana. The holotype is composed...
Sauropodomorphs are the most abundant and diverse clade of Triassic dinosaurs, but taxonomy their earliest (Carnian) representatives is still poorly understood. One such taxon Pampadromaeus barberenai, represented by a nearly complete disarticulated skeleton recovered from upper part Santa Maria Formation Rio Grande do Sul, Brazil. Here, osteology Pam. barberenai fully described for first time. Detailed comparisons with other Carnian sauropodomorphs reveal unique anatomy, corroborating its...
Abstract The Carnian (Upper Triassic) rocks of the Candelária Sequence present a rich record dinosaurs, including some oldest known dinosaurs worldwide. In this contribution we describe first unequivocal dinosaur from Pivetta site, located in Restinga Sêca municipality, Southern Brazil. specimen CAPPA/UFSM 0373 is an isolated but well‐preserved left ilium. A thorough examination specimen's anatomy and phylogenetic analysis provides evidence that belongs to Herrerasauria. We were able...
In the present contribution, we aim to osteology of ‘ULBRA-PVT-281’, which comprises best-preserved skeleton Prestosuchus chiniquensis ever found. ULBRA-PVT-281 combines morphology two classic specimens referred P. chiniquensis, UFRGS-PV-0156-T and UFRGSPV- 0152-T, reunited in a single operational taxonomic unit (OTU) previous phylogenetic studies. Therefore, new specimen reinforces combination both specimens. We performed analysis, combining information these three plus braincase data from...
Abstract: Chigutisauridae is the longest‐lived trematosaurian clade (from early Triassic to Cretaceous). They were reported in Argentina, Australia, India and South Africa. This contribution reports a putative chigutisaurid specimen Carnian of southern Brazil (Santa Maria Formation, Paraná Basin). The material comprises two skull fragments, mandibular fragment, clavicular blade humerus. Ontogenetic features point an development stage specimen. presence long, straight pointed tabular horn,...
A histological analysis of the dentition small procolophonid parareptile Soturnia caliodon reveals detailed information concerning tooth implantation and replacement for this taxon.The presence acrodont is verified, which contradicts current models dentition.A heterogeneous enamel layer, that reaches large thickness on cusps, a broad secondary dentine are also recorded.These structures provide very stable occlusal morphology extends useful life teeth.During process replacement, old teeth...
A histological investigation of the feeding apparatus a Stereosternum specimen revealed great number adaptations in structure and insertion teeth, to deal with breakage risks.The tooth wall is composed different layers dentine, varying orientation composition.This mixed arrangement may have increased resistance lateral tension.The also involves more than one mechanism.The teeth are located inside shallow sockets held place by tripartite periodontium (composed alveolar bone, cementum possibly...
Many authors have discussed the subnarial foramen in Archosauriformes. Here presence among Archosauriformes, shape, and position of this structure is reported its phylogenetic importance investigated. Based on distribution tree, it probably arose independently Erythrosuchus, Herrerasaurus, Paracrocodylomorpha. In Paracrocodylomorpha oval-shaped, placed middle height main body maxilla, does not reach ascending process. basal loricatans from South America (Prestosuchus chiniquensis Saurosuchus...
Abstract Two sets of teeth (diphyodonty) characterise extant mammals but not reptiles, as they generate many replacement (polyphyodonty). The transition in long‐extinct species from to only two has date been reported Jurassic eucynodonts. Specimens the Late Triassic brasilodontid eucynodont Brasilodon have provided anatomical and histological data three lower jaws different growth stages. These reveal ordered timed deciduous by adult teeth. Therefore, this diphyodont dentition, contemporary...
The first occurrence of stereospondyl remains in the Santa Maria Formation (Middle/Upper Triassic) Paraná Basin is reported. material fragmentary but indicates presence large stereospondyls Carnian this unit. lack informative characters an obstacle, specimens probably belong to metoposaurids, trematosaurids or mastodonsauroids. Most South American reports record (except for Argentinean chigutisaurids, and Brazilian Australerpeton cosgriffi—a rhinesuchoid, Sangaia lavinai—a rhytidosteid),...
Femora of the holotype and only previously known specimen early sauropodomorph Pampadromaeus barberenai are incomplete fractured. Here, we describe a new complete femur assigned to barberenai, quarried from same outcrop original type specimen: 'Janner' site, (Carnian Paraná Basin). It shares with unique combination features: anteromedial tuber slightly posteromedially displaced; lesser trochanter proximodistally oriented proximal tip gently connected femoral shaft; fourth located on medial...