stratigraphicSignificance

URI: https://gptkb.org/prop/stratigraphicSignificance
4 triples
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Subject Object
gptkb:Meishan_site marks end of Permian and start of Triassic
gptkb:Permian-Triassic boundary between Paleozoic and Mesozoic eras
gptkb:Treptichnus_pedum marks base of Cambrian period
gptkb:Huangnitang_section,_Zhejiang,_China base of Darriwilian defined by first appearance of Undulograptus austrodentatus