The rise of arthropods is a decisive event in the history of life. Likely the first animals to have
established themselves on land and in the air, arthropods have pervaded nearly all …

The basal phylogeny of Chelicerata is one of the opaquest parts of the animal Tree of Life,
defying resolution despite application of thousands of loci and millions of sites. At the …

Xiphosurans are aquatic chelicerates with a fossil record extending into the Early Ordovician
and known from a total of 88 described species, four of which are extant. Known for their …

Records of evolutionary stasis over time are central to uncovering large-scale evolutionary
modes, whether by long-term gradual change or via enduring stability punctuated by rapid …

Simple Summary The transition of life from the aquatic realm onto land represented one of
the fundamental episodes in the evolution of the Earth that laid down the foundations for …

Marine hypoxia poses a significant challenge in the contemporary marine environment. The
horseshoe crab, an ancient benthic marine organism, is confronted with the potential threat …

The proliferation of genomic resources for Chelicerata in the past 10 years has revealed that
the evolution of chelicerate genomes is more dynamic than previously thought, with multiple …

Animals breaking away from the sea was a revolutionary event in the evolution of life.
Arthropods were the earliest metazoans to move onto land, and although a few Silurian …

Some taxa occupy our imaginations as “living fossils” because they were known from the
fossil record before being discovered alive today. Other taxa are considered “living fossils” …

Eurypterids, the so-called sea scorpions, are a group of extinct chelicerates with a diversity
of over 250 species. Although the group has a distribution across most of the globe, the …