†family Stylonurellidae Lamsdell 2025 (eurypterid)
Full reference: J. C. Lamsdell. 2025. Codex Eurypterida: A Revised Taxonomy Based on Concordant Parsimony and Bayesian Phylogenetic Analyses. Bulletin of the American Museum of Natural History 473:1-196
Parent taxon: Stylonuroidea according to J. C. Lamsdell 2025
Sister taxa: Parastylonuridae, Stylonuridae
Subtaxa: Stylonurella
Ecology: nektobenthic carnivore
Distribution:
• Devonian of United States (1: Pennsylvania collection)
• Silurian of Norway (1), the United Kingdom (1)
Total: 3 collections each including a single occurrence