e/Franconian (stage)

Information
has gloss	eng: The Franconian is the middle stage of the Upper or Late Cambrian in North America, equivalent to the Chinese Changshanian with a span of nearly 4.5 million years, from about 497 to 492.5 Ma. The name comes from the Franconia Formation, about 100 feet (30 m) of sandstone and green shale exposed near the town of Franconia in eastern Minnesota, north of St Paul.
lexicalization	eng: Franconian
instance of	(noun) from 544 million to about 500 million years ago; marine invertebrates Cambrian, Cambrian period