ID: 208
Class: Phylogenetic
Description:
The geochronological unit of the first palaeontological occurrence of morphologically defined genera based on the published literature.
Standards:
Values: Recent Eocene Oligocene Miocene Ypresian Miocene middle Cretaceous Cretaceous Lower Aptian Jurassic Upper Eocene middle Cretaceous Upper Turonian Cretaceous upper Pleistocene Priabonian Cretaceous middle Pliocene Barremian Neocomian Chattian Thanetian Danian Kimmeridgian Miocene upper Burdigalian Oligocene middle Rupelian upper Tortonian Cenomanian Pleistocene-?Oligocene Miocene Lower Aquitanian Eocene-Cretaceous Pliocene-Pleistocene Bathonian Palaeocene Rupelian
Methodologies:
Editor: Matthew Kosnik (contact)