{"thcode":2,"term":{"code":1657,"name":"Quaternary","parent":1627,"scope":"Period of geologic time approximately 2.6 million years ago extending to the present. In new studies, this term is deprecated in favor of Holocene and Pleistocene. https:\/\/doi.org\/10.3133\/fs20103059"},"uf":[],"bt":[{"code":1627,"name":"Cenozoic","parent":1652,"scope":"Era of geologic time approximately 65 million years ago extending to the present. https:\/\/doi.org\/10.3133\/fs20103059"},{"code":1652,"name":"Phanerozoic","parent":1634,"scope":"Eon of geologic time approximately 542 million years ago extending to the present. https:\/\/doi.org\/10.3133\/fs20103059"},{"code":1634,"name":"geologic time periods","parent":1663,"scope":null},{"code":1663,"name":"time periods","parent":1,"scope":"Geologic time periods and seasons of the year"},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[{"code":1636,"name":"Holocene","parent":1657,"scope":"Epoch of geologic time approximately 11 thousand years ago extending to the present. https:\/\/doi.org\/10.3133\/fs20103059"},{"code":1653,"name":"Pleistocene","parent":1657,"scope":"Epoch of geologic time approximately 2.6 million to 11 thousand years ago. https:\/\/doi.org\/10.3133\/fs20103059"}],"rt":[]}