In March 2025, Ryan Van Hooser developed an ontology extension for the obophenotype/cell-ontology repository, focusing on the stomatogastric ganglion neuron types found in crabs and lobsters. He applied his expertise in bioinformatics, data modeling, and ontology development using OWL to define new neuron cell types and associated annotations. His work included updating import statements and refining taxonomic classifications, which improved the repository’s ability to support consistent cross-species annotation and data integration. The changes enabled more accurate downstream annotation for crustacean gastric mill and pyloric neuron datasets, demonstrating a focused and technically detailed approach to ontology engineering.