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International Journal of Earth Sciences

, Volume 105, Issue 8, pp 2273–2284 | Cite as

Tithonian age of dinosaur fossils in central Patagonian, Chile: U–Pb SHRIMP geochronology

  • Manuel Suárez
  • Rita De La Cruz
  • Mark Fanning
  • Fernando Novas
  • Leonardo Salgado
Original Paper

Abstract

Three Tithonian concordant U–Pb SHRIMP zircon ages of 148.7 ± 1.4, 147.9 ± 1.5 and 147.0 ± 1.0 from tuffs intercalated in a clastic sedimentary succession with exceptional dinosaur bones including the new taxon Chilesaurus diegosuarezi gen. et sp. nov. exposed in central Chilean Patagonia (ca. 46°30′S) are reported herein. The fossiliferous beds accumulated in a synvolcanic fan delta reaching a shallow marine basin as indicated by glauconite present in some of the beds, and coeval with the beginning of the transgression of the Aysén Basin.

Keywords

U–Pb Tithonian Dinosaurs Chilesaurus diegosuarezi gen. et sp. nov. Patagonia Chile 

Notes

Acknowledgments

This work was financed by FONDECYT Projects No. 1121140 (and initiated with FONDECYT projects Nos. 1030162 and 1080516), the Universidad Andres Bello and the Servicio Nacional de Geología y Minería. We acknowledge the curiosity, good sight and capacity of Diego Suárez who at the age of 7 independently discovered the dinosaur fossils, and the assistance of Leonardo Zúñiga, Alvaro Saldivia and Heliberto Leichtle.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Manuel Suárez
    • 1
  • Rita De La Cruz
    • 2
  • Mark Fanning
    • 3
  • Fernando Novas
    • 4
  • Leonardo Salgado
    • 5
  1. 1.Carrera Geología, Facultad IngenieríaUniversidad Andres Bello, SazieSantiagoChile
  2. 2.Servicio Nacional de Geología y MineríaSantiagoChile
  3. 3.Research School of Earth SciencesThe Australian National UniversityCanberraAustralia
  4. 4.Museo Argentino de Ciencias NaturalesBuenos AiresArgentina
  5. 5.Consejo Nacional de Investigaciones Científicas y Técnicas (Conicet), Instituto de Investigación en Paleobiología y GeologíaUniversidad Nacional de Río NegroGeneral RocaArgentina

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