I coined the term ecosymbol to describe plants, animals, minerals, fossils, and soils adopted as national or state symbols. If you prefer to call them Nature symbols, that’s fine.
Most ecosymbols fit into one of the four categories listed at the top of the page, Animals, Plants, Other Organisms, or Earth Symbols. However, there are some ecosymbols that are a little more unorthodox. For example, a few U.S. states have adopted official rivers and even stars.