INVESTIGADORES
PAULINA CARABAJAL ariana
artículos
Título:
Extinction of herbivorous dinosaurs linked to Early Jurassic global warming event
Autor/es:
POL, D.; RAMEZANI, J.; GOMEZ, K.; CARBALLIDO, J; PAULINA CARABAJAL, A.; RAUHUT, O.; ESCAPA, I.; CÚNEO, N.R.
Revista:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON. SERIES B: BIOLOGICAL SCIENCES.
Editorial:
ROYAL SOC
Referencias:
Lugar: Londres; Año: 2020
ISSN:
0962-8452
Resumen:
Sauropods, the giant long-necked dinosaurs, became the dominant group of large herbivores in terrestrial ecosystems after multiple related lineages became extinct towards the end of the Early Jurassic (190?174 Ma). The causes and precise timing of this key faunal change and as well as the origin of eusauropods (true sauropods) have remained ambiguous mainly due to the scarce dinosaurian fossil record of this time. We report the oldest eusauropod skull and show that the rise of this group in Patagonia followed a massive magmatic event impacting southern Gondwana (180?184 Ma), coinciding with severe perturbations to the climate and plant assemblages. Evidence from other regions suggest these were global changes in the terrestrial ecosystems related to the Toarcian warming of climate and part of a second-order mass extinction event.