8 papers
Paleontology invites us to look deep into Earth's history, using the fossil record to reconstruct the lives of ancient organisms and the environments they once inhabited. From tiny microscopic traces to massive dinosaur skeletons, this field helps us understand how life has evolved, adapted, and sometimes vanished over hundreds of millions of years, offering a unique window into our planet's dynamic past.
At Gist.Science, we make the latest discoveries in this exciting field accessible to everyone. Every new preprint in paleontology from bioRxiv is processed by our team to provide both clear, plain-language explanations and detailed technical summaries. This ensures that whether you are a casual enthusiast or a specialist, you can grasp the significance of cutting-edge research without getting lost in complex jargon.
Below you will find the most recent paleontology papers from bioRxiv, each paired with our expert summaries to help you dive straight into the science.
While current human activity is driving the second-fastest rate of biosphere degradation in Earth's history, comparable to transient geological disruptors, humanity possesses the unique capacity to reflect on and transform its impact, potentially becoming the greatest driver of biosphere net gain and planetary habitability in Earth's history.
The authors developed protSexInferer, an automated, open-source bioinformatic pipeline that improves the accuracy and standardization of sex determination in ancient remains by utilizing a ratio-based approach (RAMELY) to analyze amelogenin peptides, thereby overcoming the limitations of manual verification and false-positive signals in degraded paleo-proteomic samples.
Using micro-computed tomography across a broad taxonomic sample, this study clarifies that post-hatching pterygoid segmentation is restricted to Neoaves and proposes that the hemipterygoid process in other bird groups is a homologous but non-segmenting structure, thereby refining our understanding of avian bony palate evolution.
This study challenges the long-held belief that the extinct mammal *Uintatherium anceps* exhibited strong sexual dimorphism by demonstrating that linear morphometric analyses of its skulls reveal no significant size or feature differences between sexes, unlike the clear dimorphism found in the modern bison control group.
This study demonstrates that the current fossil record, as represented by the NOW database, suffers from significant temporal and spatial sampling biases driven by anthropocentric data collection practices that prioritize periods and locations associated with hominin evolution, thereby highlighting the urgent need to decouple paleoscience narratives from human-centric perspectives to improve data accuracy.
This study provides the first statistically supported evidence that Cambrian luolishaniid lobopodians were suspension feeders by demonstrating a positive correlation between their body length and anterior appendage mesh spacing, a scaling pattern consistent with modern predator-prey relationships in aquatic filter-feeders.
This paper rejects the hypothesis that diverse late Maastrichtian tyrannosaurids from the Hell Creek Formation are merely juvenile *Tyrannosaurus rex* undergoing radical metamorphosis, instead arguing they represent a distinct assemblage of basal eutyrannosaur genera—including two newly named species, *Gilmorelarsontyrannus lethaeus* and *Elegansvenator zannoae*—that migrated from Appalachia to Laramidia, bringing the total known diversity of the region to seven species across five genera.
This study establishes a benchmark taphonomic framework for underwater caves by demonstrating that submerged vertebrate remains generally exhibit superior preservation compared to dry cave deposits, yet display distinct biological modifications like cyanobacterial tunnelling and surface corrosion driven by light availability and associated microbial activity.