J. A. Ballesteros

A taxon-restricted duplicate of Iroquois3 is required for patterning the spider waist

This study identifies a taxon-restricted duplicate of Iroquois3 (waist-less) essential for establishing the prosoma-opisthosoma boundary in spiders.

Comprehensive species sampling and sophisticated algorithmic approaches refute the monophyly of Arachnida

The paper uses comprehensive genomic and morphological data to challenge the accepted monophyly of Arachnida, finding horseshoe crabs nested within a paraphyletic group.

Taxonomic sampling and rare genomic changes overcome long-branch attraction in the phylogenetic placement of pseudoscorpions

This study resolves pseudoscorpion phylogenetic placement by overcoming long-branch attraction through increased taxonomic sampling and genomic analysis, placing pseudoscorpions as sister to scorpions within Arachnopulmonata.

Phylogenomics of scorpions reveal a co-diversification of scorpion mammalian predators and mammal-specific sodium channel toxins

This study uses phylogenomic data to show that mammalian-specific sodium channel toxins in scorpion venom co-diversified with their mammalian predators.

Phylogenomic resolution of sea spider diversification through integration of multiple data classes

This study resolves the phylogeny of sea spiders by integrating multiple data classes, revealing new relationships and divergence times.