[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Dating Chilesaurus to Tithonian (Jurassic)

Ben Creisler

A new paper:

Manuel Suárez , Rita De La Cruz, Mark Fanning, Fernando Novas &
Leonardo Salgado (2015)
Tithonian age of dinosaur fossils in central Patagonian, Chile: U–Pb
SHRIMP geochronology.
International Journal of Earth Sciences (advance online publication)
DOI: 10.1007/s00531-015-1287-7

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.