Theropods of Late Cretaceous Bauru Group in Central Brazil
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Ben Creisler
Jul 16, 2024, 11:06:58 PMJul 16
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Ben Creisler
A new paper:
This study presents a complete overview of theropod dinosaurs from Central Brazil of Late Cretaceous Bauru Group.
The Upper Cretaceous faunal and palaeobiogeographical carnivorous dinosaurs from southern central South America were updates.
Abstract
The region of Central Brazil has one of the most diverse records of carnivorous dinosaurs from the Late Cretaceous of South America. The recent increase in discoveries and re-study of previously discovered fossil material has allowed us to create a picture of the composition of the fauna, as well as of the diversity and paleobiogeography of theropods. For this study, the theropod-bearing units of the Uberaba, Adamantina and Marília formation in 22 municipalities in the states of Goiás, Minas Gerais and São Paulo, were analyzed. This work provides an overview of the fauna of these carnivores, as well as taphonomic/paleoenvironmental and macroevolutionary inferences. The arid climatic conditions or variable water supply in fluvial systems with strong pre-burial weathering processes, have conditioned the taphonomic preservation of theropods, the majority of them, represented by isolated and/or fragmented fossils. Nevertheless, the analysis suggests a probable post-Santonian isolation of this region, an interesting topic for understanding the evolutionary and paleobiogeographic history of dinosaurs on the southern continents during the last several million years before non-avian dinosaurs went extinct.
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Carlos Roberto A. Candeiro, Stephen L. Brusatte, Bernardo Gonzalez-Riga, Paulo Victor L.G. Costa Pereira & Luciano Vidal (2024)
Carnivorous dinosaurs of the Late Cretaceous Bauru Group in Central Brazil: records, diversity, taxonomic composition and paleobiogeography
Journal of South American Earth Sciences 105041
doi: https://doi.org/10.1016/j.jsames.2024.105041
https://www.sciencedirect.com/science/article/abs/pii/S0895981124002633
Highlights
Carlos Roberto A. Candeiro, Stephen L. Brusatte, Bernardo Gonzalez-Riga, Paulo Victor L.G. Costa Pereira & Luciano Vidal (2024)
Carnivorous dinosaurs of the Late Cretaceous Bauru Group in Central Brazil: records, diversity, taxonomic composition and paleobiogeography
Journal of South American Earth Sciences 105041
doi: https://doi.org/10.1016/j.jsames.2024.105041
https://www.sciencedirect.com/science/article/abs/pii/S0895981124002633
Highlights
This study presents a complete overview of theropod dinosaurs from Central Brazil of Late Cretaceous Bauru Group.
The Upper Cretaceous faunal and palaeobiogeographical carnivorous dinosaurs from southern central South America were updates.
Abstract
The region of Central Brazil has one of the most diverse records of carnivorous dinosaurs from the Late Cretaceous of South America. The recent increase in discoveries and re-study of previously discovered fossil material has allowed us to create a picture of the composition of the fauna, as well as of the diversity and paleobiogeography of theropods. For this study, the theropod-bearing units of the Uberaba, Adamantina and Marília formation in 22 municipalities in the states of Goiás, Minas Gerais and São Paulo, were analyzed. This work provides an overview of the fauna of these carnivores, as well as taphonomic/paleoenvironmental and macroevolutionary inferences. The arid climatic conditions or variable water supply in fluvial systems with strong pre-burial weathering processes, have conditioned the taphonomic preservation of theropods, the majority of them, represented by isolated and/or fragmented fossils. Nevertheless, the analysis suggests a probable post-Santonian isolation of this region, an interesting topic for understanding the evolutionary and paleobiogeographic history of dinosaurs on the southern continents during the last several million years before non-avian dinosaurs went extinct.
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