In the mid-19th century, the discovery that bone microstructure in fossils could be preserved
with fidelity provided a new avenue for understanding the evolution, function, and …

Molecular studies have contributed greatly to our understanding of evolutionary processes
that act upon virtually every aspect of living organisms. However, these studies are limited …

Enantiornithines were the most diverse group of birds during the Cretaceous, comprising
over half of all known species from this period. The fossil record and subsequently our …

The last two decades have seen a broad diversity of methods used to identify and/or
characterize proteins in the archeological and paleontological record. Of these, mass …

In the last 5 decades, paleontological research has exploded where fossils have enabled
robust dating of rocks, improved understanding of origination/extinction rates or mass …

The goal of paleoproteomics is to characterize proteins from specimens that have been
subjected to the degrading and obscuring effects of time, thus obtaining biological …

The most complete known North American enantiornithine was collected in 1992 but never
formally described. The so-called “Kaiparowits avisaurid” remains one of the most …

Simple Summary Although many analytical techniques have shown that organic material
can be preserved in fossils for millions of years, the geochemical factors that allow this …

We describe a specimen of the basal ornithuromorph Archaeorhynchus spathula from the
Lower Cretaceous Jiufotang Formation with extensive soft tissue preservation. Although it is …

Jianianhualong tengi is a key taxon for understanding the evolution of pennaceous feathers
as well as troodontid theropods, and it is known by only the holotype, which was recovered …