Bioapatite of fossil bone and teeth is susceptible to alteration and ion exchange during
burial and diagenesis, varying its Sr content through the geological time. Nevertheless, fossil …

Otodontids include some of the largest macropredatory sharks that ever lived, the most
extreme case being Otodus (Megaselachus) megalodon. The reasons underlying their …

Abstract The Cambrian Explosion was a key event in the evolution of life on Earth. This
event took place at a time when sea surface temperatures have been proposed to reach …

Secondary ion mass spectrometry (SIMS) requires matrix‐matched reference materials to
calibrate mass fractionation during oxygen isotope measurement. Over one thousand SIMS …

Significant changes occurred in both terrestrial and marine environments in the Devonian,
during which complex terrestrial life radiated rapidly from the ocean. However, the …

The δ18O (PO4) of shark teeth can be used as a geochemical proxy for the
palaeoenvironment during tooth mineralization. A well-preserved state of the teeth is …

We analyzed the oxygen isotope composition of biogenic apatite phosphate (δ18Op) in
fossil tooth enameloid to investigate the paleoecology of Late Cretaceous sharks in the Gulf …

Scanning electron microscope (SEM) imaging of fossils allows unlocking ultrastructural
information about their skeletal tissues, but sample preparation of biominerals forming their …

Biogenic minerals such as dental apatite have become commonly analysed archives
preserving geochemical indicators of past environmental conditions and palaeoecologies …

Abstract The Neogene (~ 23.0–2.6 million years ago) is the current climate analogue used in
predictive scenario modeling, as it is characterized as having similar biota, geography, and …