The Society of Vertebrate Paleontology (SVP) has recently circulated a letter, dated 21st
April, 2020, to more than 300 palaeontological journals, signed by the President, Vice …

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 …

Sharks and their relatives are typically covered in highly specialized epithelial appendages
embedded in the skin called dermal denticles; ancient tooth-like units (odontodes) …

Biogenic apatite (fish teeth/bones) is considered the primary host mineral of rare earth
elements and Y (REY) in deep-sea REY-rich sediments. Meanwhile, Fe-Mn (oxyhydr) oxides …

Asteracanthus was one of the most common Mesozoic hybodontiform chondrichthyans,
given that remains traditionally referred to this genus have been reported almost worldwide …

During their evolutionary history, modern sharks developed different tooth mineralization
patterns that resulted in very distinct histological patterns of the tooth crown (histotypes). To …

The cartilaginous fishes (Chondrichthyes) have a rich fossil record which consists mostly of
isolated teeth and, therefore, phylogenetic relationships of extinct taxa are mainly resolved …

Eocene climate cooling, driven by the falling pCO2 and tectonic changes in the Southern
Ocean, impacted marine ecosystems. Sharks in high‐latitude oceans, sensitive to these …

The Late Jurassic elasmobranch Protospinax annectans is often regarded as a key species
to our understanding of crown group elasmobranch interrelationships and the evolutionary …

The lifelong tooth replacement in elasmobranch fishes (sharks, rays and skates) has led to
the assemblage of a great number of teeth from fossil and extant species, rendering tooth …