Javier Ortega‐Hernández

This paper describes the central nervous system of a trilobite, providing morphological evidence supporting its placement within the mandibulate stem lineage and insights into the evolution of the euarthropod central complex.

Cambrian luolishaniid lobopodian appendage mesh spacing scales sublinearly with body length, and their predator-prey size ratios match modern suspension feeders rather than raptorial chaetognaths.

The paper calculates the surface area of lamellae in trilobite exopodites and finds it increases exponentially with body size, supporting their function as respiratory structures.

This study identifies suction feeding in Hallucigenia sparsa based on fossil evidence, suggesting it was a key ecological role in Cambrian ecosystems.

This study quantifies biodiversity trends during the Great Ordovician Biodiversification Event using a meta-analysis of 98 datasets, revealing sustained diversification followed by a decline due to mass extinction.

The paper describes a new Early Ordovician starfish ancestor, Cantabrigiaster fezouataensis, and uses phylogenetic analysis to clarify the origin and relationships of crown group echinoderms.