Cm. Bell et K. Padian, PTEROSAUR FOSSILS FROM THE CRETACEOUS OF CHILE - EVIDENCE FOR PTEROSAUR COLONY ON AN INLAND DESERT PLAIN, Geological Magazine, 132(1), 1995, pp. 31-38
A 2-m-thick bed of sandstone and conglomerate in early Cretaceous dese
rt sediments in the Andes of northern Chile contains thousands of scat
tered pterosaur bones. The bed displays sedimentary features which sug
gest that it was the product of a single major flood event. It seems p
ossible that a large pterosaur colony was overwhelmed by the waters of
an exceptional flood sweeping across a flat alluvial plain.