Hadrosaurs Were Perennial Polar Residents
作者： Anusuya Chinsamy , Daniel B. Thomas , Allison R. Tumarkin-Deratzian , Anthony R. Fiorillo
DOI: 10.1002/AR.22428
关键词: Temperate climate 、 Overwintering 、 Life history 、 Edmontosaurus 、 Perennial plant 、 Ecology 、 Biology 、 Polar 、 Arctic 、 Cretaceous
摘要: Recent biomechanical evidence has fuelled debate surrounding the winter habits of hadrosaurian dinosaur Edmontosaurus (ca. 70 Ma). Using histological characteristics recorded in bone, we show that polar endured long night. In contrast, bone microstructure temperate is inconsistent with a perennially harsh environment. Differences and consequently dispute hypothesis populations were migratory. The overwintering signal preserved offers significant insight into life history dinosaurs within Late Cretaceous Arctic. Anat Rec, 2012. © 2012 Wiley Periodicals, Inc.
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