Alberto Pérez-Huerta

TL;DR: Passey et al. as mentioned in this paper used a combination of laboratory and natural geological experiments on Paleozoic brachiopod shells to directly observe rates of 13 C − 18 O bond reordering.

TL;DR: Sea urchins have characteristic spines that fulfil critical functions, and marked spine internal heterogeneities at different structural levels despite the single-crystal character of the spines are investigated, revealing that the septa have higher stiffness and hardness than the meshwork stereom and that septum stiffness and toughness present different trends in longitudinal and transverse section.

TL;DR: In this article, the authors evaluate and reject the hypothesis that solid-state reordering of 13C-18O bonds has destroyed the primary clumped isotope temperature signal of most fossils during sedimentary burial at elevated temperatures.

TL;DR: In this paper, the diagenetic and thermal histories of exhumed brachiopods, crinoids, cements, and host rock in the Permian Palmarito Formation, Venezuela, and the Carboniferous Bird Spring Formation, Nevada, USA were explored.

TL;DR: Clumped isotope analysis of eggshells can be used to determine body temperatures of females during periods of ovulation and indicates that variable thermoregulation likely existed among the non-avian dinosaurs and that not all dinosaurs had body temperatures in the range of that seen in modern birds.