Cambrian Stage 10

EtymologyName formalityInformalUsage informationCelestial bodyEarthRegional usageGlobal (ICS)Time scale(s) usedICS Time ScaleDefinitionChronological unitAgeStratigraphic unitStageTime span formalityFormalLower boundary definitionNot formally definedLower boundary definition candidatesFAD of the Trilobite Lotagnostus americanusLower boundary GSSP candidate section(s), Zhejiang, ChinaUpper boundary definitionFAD of the ConodontIapetognathus fluctivagus.Upper boundary GSSPGreenpoint section, Green Point, Newfoundland, Canada
49°40′58″N57°57′55″W / 49.6829°N 57.9653°W / 49.6829; -57.9653Upper GSSP ratified2000

Stage 10 of the Cambrian is the still-unnamed third and final stage of the Furongian series. It follows the Jiangshanian and precedes the Ordovician Tremadocian Stage. The proposed lower boundary is the first appearance of the trilobite around 491 million years ago, but other fossils are also being discussed (see below). The upper boundary is defined as the appearance of the conodontIapetognathus fluctivagus which marks the beginning of the Tremadocian and is radiometrically dated as 486.85 million years ago.