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     "values": [
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     "values": [
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     "url": "84d43a2819e21cf5340ffc0410fc5c12",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdqZc0m27Br01IZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgATIA2afQy5AgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Mesoproterozoic"
     ]
    },
    {
     "label": "Mesoproterozoic to Paleoproterozoic",
     "url": "be352f0b6e5e6408903ee44f28582adb",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOCp9NtmF5K1MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgD1cQ1FERXaegAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Mesoproterozoic to Paleoproterozoic"
     ]
    },
    {
     "label": "Mesozoic",
     "url": "ea45e9dcb2c3147893e66003a6923347",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOKpxNtmF5/akMDAy09PKogaMGjho4aiBOA2FFEDlgypQpDSgGwgQoBQDsgQ0rbNH5DAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Mesozoic"
     ]
    },
    {
     "label": "Mesozoic to Paleozoic",
     "url": "6fd9c224a0dd02ec7f67d28a160dcb33",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOkplNtmF5T1IZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgAJyA2A9YDIIgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Mesozoic to Paleozoic"
     ]
    },
    {
     "label": "Mesozoic to upper Paleozoic",
     "url": "217cbdc9c51b099f1bc37dbb9aaba6f8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOWjubbMPyglMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDX4Qzv/NvWbQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Mesozoic to upper Paleozoic"
     ]
    },
    {
     "label": "Middle Jurassic",
     "url": "49959a98851032b875e1bbdba9b413b2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBd6l88m27CtnakMDAy09PKogaMGjho4aiBOA2FFEDlgypQpDSgGwgQoBQADLw1sypQZvQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Middle Jurassic"
     ]
    },
    {
     "label": "Miocene",
     "url": "ed4f23511414a6f43913f7ce5512921c",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBe+959NtmGCG1MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDX3Azw8CEc1QAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Miocene"
     ]
    },
    {
     "label": "Neogene",
     "url": "4710c2282afbf042c5b6481ec0bc0f05",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBd+DZxNtmHc61MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDVFgzoiLQpUAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Neogene"
     ]
    },
    {
     "label": "Neoproterozoic",
     "url": "3ead270c3b49d51a8ccbd0ce6c947924",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOYp5NtmF5f1MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgASYA2ZdmBtiQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Neoproterozoic"
     ]
    },
    {
     "label": "Neoproterozoic to Mesoproterozoic",
     "url": "9305e3e47b21f004210d4185a54d7ec1",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBcqpM4m27AHs1MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgAYUg2pnIlHqgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Neoproterozoic to Mesoproterozoic"
     ]
    },
    {
     "label": "Neoproterozoic to lower Paleozoic",
     "url": "03d34f0998cd1a74722ca4af6723ecdf",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBcWtc0m27C+qlQGBgZaennUwFEDRw0cNRCngbAiiBwwZcqUBhQDYQKUAgDwaQ02XWgn/QAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Neoproterozoic to lower Paleozoic"
     ]
    },
    {
     "label": "Oligocene",
     "url": "1c6932c0ecf377e93cb7cb641387cc61",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOOjebbMPyjFIZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDMiQzOL0H2lgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Oligocene"
     ]
    },
    {
     "label": "Paleocene",
     "url": "a19c5da0b61ab58bc2348ccb34ddc96d",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBfedZ1NtmHKu1MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDhjg0M1duaTgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Paleocene"
     ]
    },
    {
     "label": "Paleoproterozoic",
     "url": "e3a2410577981c6b7834c620366c1ff6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdG1swm27DlLakMDAy09PKogaMGjho4aiBOA2FFEDlgypQpDSgGwgQoBQD8ig1ZrjH6cgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Paleoproterozoic"
     ]
    },
    {
     "label": "Paleoproterozoic to Archean",
     "url": "b18671d25fb0fdc93ffc0ecf850734cb",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOsp5NtmF5R1MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgD/EQ1hMsoY0wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Paleoproterozoic to Archean"
     ]
    },
    {
     "label": "Paleozoic",
     "url": "9a0c75560fb38542340022016e7745f2",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOqp1NtmF5zakMDAy09PKogaMGjho4aiBOA2FFEDlgypQpDSgGwgQoBQDoYQ0fAAKfJwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Paleozoic"
     ]
    },
    {
     "label": "Paleozoic to Neoproterozoic",
     "url": "fe8b6d6a490298e4fedaed203f4733e5",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdO6p5NtmF5pakMDAy09PKogaMGjho4aiBOA2FFEDlgypQpDSgGwgQoBQDjkQ0RrFk2kAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Paleozoic to Neoproterozoic"
     ]
    },
    {
     "label": "Paleozoic to Paleoproterozoic",
     "url": "2a602965783452e2f2b641110848fe79",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOSp1NtmF5s1MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDwoQ03yoJ0+AAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Paleozoic to Paleoproterozoic"
     ]
    },
    {
     "label": "Paleozoic to Precambrian",
     "url": "4a12523152c3124d7dadd686d6c06871",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBemNc0m27BZdakMDAy09PKogaMGjho4aiBOA2FFEDlgypQpDSgGwgQoBQD19Q1GV8VcTAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Paleozoic to Precambrian"
     ]
    },
    {
     "label": "Plio-Quaternary",
     "url": "7ad67848f5fce35de368c8b329da55c0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOmj2bbMPyUlMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDeEQ0B38B58wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Plio-Quaternary"
     ]
    },
    {
     "label": "Precambrian",
     "url": "3dc3424bd8fe455f623f89435179fbd6",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOujmbbMPy1FMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDIwQzDqvAwDwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Precambrian"
     ]
    },
    {
     "label": "Proterozoic",
     "url": "ef39102fafb549893d5725ac1d9ae1d8",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBfaFs0m27DDfakMDAy09PKogaMGjho4aiBOA2FFEDlgypQpDSgGwgQoBQAJxQ1/WImFagAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Proterozoic"
     ]
    },
    {
     "label": "Undifferenciated Cretaceous",
     "url": "0a6798fc55b582988f47a0f638cb50da",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOejqbbMPypFMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDEoQy36cZlfwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Undifferenciated Cretaceous"
     ]
    },
    {
     "label": "Undifferenciated Jurassic - Cretaceous",
     "url": "8da7bad016940dd00cabd0a1a915a7a4",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBees5lNtmFGR1IZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDp3Q0kjxj4wQAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Undifferenciated Jurassic - Cretaceous"
     ]
    },
    {
     "label": "Unknown age",
     "url": "7ad67848f5fce35de368c8b329da55c0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdOmj2bbMPyUlMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDeEQ0B38B58wAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Unknown age"
     ]
    },
    {
     "label": "Upper Cretaceous",
     "url": "9490cd2a4ab024ea8e59c1c17c1eb6db",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdO8phNtmF5O1IZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgD6mQ1USES1YAAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Upper Cretaceous"
     ]
    },
    {
     "label": "Upper Jurassic",
     "url": "c059dbc0d6e4162a771bbbb96f969ff4",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBfetJ9NtmHqB1MZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgDlAg0WkjouHgAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Upper Jurassic"
     ]
    },
    {
     "label": "Upper Paleozoic",
     "url": "24e5db2be637acb0110161c88944d0d0",
     "imageData": "iVBORw0KGgoAAAANSUhEUgAAABQAAAAUCAYAAACNiR0NAAAAAXNSR0IB2cksfwAAAAlwSFlzAAAOxAAADsQBlSsOGwAAAEVJREFUOI1jYaAyYKGZgTk5OQ2UGjZlypQGFBdO+jqbbMPyuFMZGBho6eVRA0cNHDVw1ECcBsKKIHLAlClTGlAMhAlQCgC/IQynd1aFTwAAAABJRU5ErkJggg==",
     "contentType": "image/png",
     "height": 20,
     "width": 20,
     "values": [
      "Upper Paleozoic"
     ]
    }
   ]
  }
 ]
}