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Nest Structure for Sauropods: Sedimentary Criteria for Recognition of Dinosaur Nesting Traces
Luis M. Chiappe, James G. Schmitt, Frankie D. Jackson, Alberto Garrido, Lowell Dingus and Gerald Grellet-Tinner
Vol. 19, No. 1 (Feb., 2004), pp. 89-95
Published by: SEPM Society for Sedimentary Geology
Stable URL: http://www.jstor.org/stable/3515797
Page Count: 7
You can always find the topics here!Topics: Eggs, Sandstones, Animal nesting, Dinosaurs, Mudstone, Stone, Sediments, Lithology, Sedimentary structures, Geology
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Six egg-filled depressions discovered in the Upper Cretaceous Anacleto Formation (Campanian) of Patagonia, Argentina, and interpreted as dinosaur nests, provide the only known evidence of titanosaurid sauropod nest construction. These nest trace fossils show truncation of sedimentary structures as well as differences in texture between the host substrate and in-filling sediment. Titanosaurid sauropods excavated and laid eggs in open nests rather than burying clutches in sediment. In addition, this paper establishes criteria for definitive recognition of excavated nests in the stratigraphic record.
PALAIOS © 2004 SEPM Society for Sedimentary Geology