- Clay County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 65,318, and was estimated to be 67,734 in 2025. Its county seat is Moorhead.
- Class Gastropoda (digitalatlasofancientlife.org)
Gastropods are the second largest class of animals (after the Insecta)—with 40,000–90,000 living species and at least 13,000 extant and fossil genera (Ponder and Lindberg, 2020)—and are also one of the most evolutionarily successful groups in the variety of ecosystems and habitats that they occupy.