{ "format" : "linked-data-api", "version" : "0.2", "result" : {"_about" : "http://vocabs.ardc.edu.au/repository/api/lda/ardc-curated/gcmd-chronounits/15-2-2023-01-03/resource.text?uri=https%3A%2F%2Fgcmd.earthdata.nasa.gov%2Fkms%2Fconcept%2F167bba30-03d3-4898-8c53-6e50828d1749", "definition" : "http://vocabs.ardc.edu.au/repository/api/lda/ardc-curated/gcmd-chronounits/15-2-2023-01-03/resource.text?uri=https%3A%2F%2Fgcmd.earthdata.nasa.gov%2Fkms%2Fconcept%2F167bba30-03d3-4898-8c53-6e50828d1749", "extendedMetadataVersion" : "http://vocabs.ardc.edu.au/repository/api/lda/ardc-curated/gcmd-chronounits/15-2-2023-01-03/resource.text?_metadata=all&uri=https%3A%2F%2Fgcmd.earthdata.nasa.gov%2Fkms%2Fconcept%2F167bba30-03d3-4898-8c53-6e50828d1749", "primaryTopic" : {"_about" : "https://gcmd.earthdata.nasa.gov/kms/concept/167bba30-03d3-4898-8c53-6e50828d1749", "broader" : [{"_about" : "https://gcmd.earthdata.nasa.gov/kms/concept/0e098a6e-2123-4566-9069-6a3401775ca3", "narrower" : ["https://gcmd.earthdata.nasa.gov/kms/concept/167bba30-03d3-4898-8c53-6e50828d1749"]}
      ], "changeNote" : ["2019-12-17 13:07:24.0 [tstevens] Insert Concept \nadd narrower relation (CAMBRIAN [167bba30-03d3-4898-8c53-6e50828d1749,505123] - FURONGIAN [d5a694f5-630e-4164-8789-aaa164a5e34a,532291]); \n", "2019-12-17 13:08:08.0 [tstevens] Insert Concept \nadd narrower relation (CAMBRIAN [167bba30-03d3-4898-8c53-6e50828d1749,505123] - MIAOLINGIAN [ea5250b7-79a4-4f27-a5c5-9ebd41ab627b,532295]); \n", "2019-12-17 13:08:28.0 [tstevens] Insert Concept \nadd narrower relation (CAMBRIAN [167bba30-03d3-4898-8c53-6e50828d1749,505123] - SERIES 2 [c98a4c91-1b1d-464d-8380-497a186db7eb,532299]); \n", "2019-12-17 13:08:55.0 [tstevens] Insert Concept \nadd narrower relation (CAMBRIAN [167bba30-03d3-4898-8c53-6e50828d1749,505123] - TERRENEUVIAN [411f36cf-8c87-474c-bfaf-614723a4b938,532303]); \n", "2019-12-18 16:03:50.0 [tstevens]  \ninsert Definition (id: null\ntext: The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 55.6 million years from the end of the preceding Ediacaran Period 541 million years ago (mya) to the beginning of the Ordovician Period 485.4 mya. The Cambrian is unique in its unusually high proportion of lagerstätte sedimentary deposits, sites of exceptional preservation where \"soft\" parts of organisms are preserved as well as their more resistant shells. As a result, our understanding of the Cambrian biology surpasses that of some later periods. The Cambrian marked a profound change in life on Earth; prior to the Cambrian, the majority of living organisms on the whole were small, unicellular and simple; the Precambrian Charnia being exceptional. Complex, multicellular organisms gradually became more common in the millions of years immediately preceding the Cambrian, but it was not until this period that mineralized\u2014hence readily fossilized\u2014organisms became common. The rapid diversification of life forms in the Cambrian, known as the Cambrian explosion, produced the first representatives of all modern animal phyla. Phylogenetic analysis has supported the view that during the Cambrian radiation, metazoa (animals) evolved monophyletically from a single common ancestor: flagellated colonial protists similar to modern choanoflagellates. Although diverse life forms prospered in the oceans, the land is thought to have been comparatively barren\u2014with nothing more complex than a microbial soil crust and a few molluscs that emerged to browse on the microbial biofilm. Most of the continents were probably dry and rocky due to a lack of vegetation. Shallow seas flanked the margins of several continents created during the breakup of the supercontinent Pannotia. The seas were relatively warm, and polar ice was absent for much of the period.\nlanguage code: en); \n"], "definition" : "The Cambrian Period was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 55.6 million years from the end of the preceding Ediacaran Period 541 million years ago (mya) to the beginning of the Ordovician Period 485.4 mya. The Cambrian is unique in its unusually high proportion of lagerstätte sedimentary deposits, sites of exceptional preservation where \"soft\" parts of organisms are preserved as well as their more resistant shells. As a result, our understanding of the Cambrian biology surpasses that of some later periods. The Cambrian marked a profound change in life on Earth; prior to the Cambrian, the majority of living organisms on the whole were small, unicellular and simple; the Precambrian Charnia being exceptional. Complex, multicellular organisms gradually became more common in the millions of years immediately preceding the Cambrian, but it was not until this period that mineralized\u2014hence readily fossilized\u2014organisms became common. The rapid diversification of life forms in the Cambrian, known as the Cambrian explosion, produced the first representatives of all modern animal phyla. Phylogenetic analysis has supported the view that during the Cambrian radiation, metazoa (animals) evolved monophyletically from a single common ancestor: flagellated colonial protists similar to modern choanoflagellates. Although diverse life forms prospered in the oceans, the land is thought to have been comparatively barren\u2014with nothing more complex than a microbial soil crust and a few molluscs that emerged to browse on the microbial biofilm. Most of the continents were probably dry and rocky due to a lack of vegetation. Shallow seas flanked the margins of several continents created during the breakup of the supercontinent Pannotia. The seas were relatively warm, and polar ice was absent for much of the period.", "inScheme" : "https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/chronounits", "narrower" : [{"_about" : "https://gcmd.earthdata.nasa.gov/kms/concept/411f36cf-8c87-474c-bfaf-614723a4b938", "broader" : ["https://gcmd.earthdata.nasa.gov/kms/concept/167bba30-03d3-4898-8c53-6e50828d1749"]}
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      , "reference" : {"text" : "International Commission on Stratigraphy (http://www.stratigraphy.org/)", "type" : "http://www.w3.org/2000/01/rdf-schema#Resource"}
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