[
    {
        "Taxon_Name": "Paradoxides davidis",
        "Clade": "Trilobita",
        "Geologic_Period": "Cambrian",
        "Biozone_Stage": "Menevian Stage",
        "FAD_Ma": 509,
        "LAD_Ma": 500.5,
        "Chronostratigraphic_Significance": "Primary Middle Cambrian intercontinental marker"
    },
    {
        "Taxon_Name": "Olenellus thompsoni",
        "Clade": "Trilobita",
        "Geologic_Period": "Cambrian",
        "Biozone_Stage": "Branchian",
        "FAD_Ma": 521,
        "LAD_Ma": 509,
        "Chronostratigraphic_Significance": "Global Early Cambrian biozone standard"
    },
    {
        "Taxon_Name": "Didymograptus murchisoni",
        "Clade": "Graptolithina",
        "Geologic_Period": "Ordovician",
        "Biozone_Stage": "Llanvirn",
        "FAD_Ma": 467.3,
        "LAD_Ma": 464,
        "Chronostratigraphic_Significance": "Bifid graptolite Middle Ordovician marker"
    },
    {
        "Taxon_Name": "Tetragraptus approximatus",
        "Clade": "Graptolithina",
        "Geologic_Period": "Ordovician",
        "Biozone_Stage": "Arenig",
        "FAD_Ma": 477.7,
        "LAD_Ma": 470,
        "Chronostratigraphic_Significance": "Base of Arenig Series global stratotype"
    },
    {
        "Taxon_Name": "Monograptus priodon",
        "Clade": "Graptolithina",
        "Geologic_Period": "Silurian",
        "Biozone_Stage": "Wenlock",
        "FAD_Ma": 433.4,
        "LAD_Ma": 427.4,
        "Chronostratigraphic_Significance": "Cosmopolitan uniserial Silurian marker"
    },
    {
        "Taxon_Name": "Tropites subbullatus",
        "Clade": "Ammonoidea",
        "Geologic_Period": "Triassic",
        "Biozone_Stage": "Carnian",
        "FAD_Ma": 237,
        "LAD_Ma": 227,
        "Chronostratigraphic_Significance": "Late Triassic pelagic ammonite zone"
    },
    {
        "Taxon_Name": "Dactylioceras commune",
        "Clade": "Ammonoidea",
        "Geologic_Period": "Jurassic",
        "Biozone_Stage": "Toarcian",
        "FAD_Ma": 182.7,
        "LAD_Ma": 174.1,
        "Chronostratigraphic_Significance": "Early Jurassic European jet rock standard"
    },
    {
        "Taxon_Name": "Perisphinctes plicatilis",
        "Clade": "Ammonoidea",
        "Geologic_Period": "Jurassic",
        "Biozone_Stage": "Oxfordian",
        "FAD_Ma": 163.5,
        "LAD_Ma": 157.3,
        "Chronostratigraphic_Significance": "Middle Oxfordian reef-carbonate marker"
    },
    {
        "Taxon_Name": "Scaphites hippocrepis",
        "Clade": "Ammonoidea",
        "Geologic_Period": "Cretaceous",
        "Biozone_Stage": "Campanian",
        "FAD_Ma": 83.6,
        "LAD_Ma": 72.1,
        "Chronostratigraphic_Significance": "Western Interior Seaway biozone chron"
    },
    {
        "Taxon_Name": "Belemnitella mucronata",
        "Clade": "Belemnoidea",
        "Geologic_Period": "Cretaceous",
        "Biozone_Stage": "Campanian",
        "FAD_Ma": 76,
        "LAD_Ma": 70.6,
        "Chronostratigraphic_Significance": "Northern Boreal Cretaceous chalk marker"
    },
    {
        "Taxon_Name": "Globotruncana stuarti",
        "Clade": "Foraminifera",
        "Geologic_Period": "Cretaceous",
        "Biozone_Stage": "Maastrichtian",
        "FAD_Ma": 72.1,
        "LAD_Ma": 66,
        "Chronostratigraphic_Significance": "Terminal Cretaceous planktic foraminifer"
    },
    {
        "Taxon_Name": "Inoceramus labiatus",
        "Clade": "Bivalvia",
        "Geologic_Period": "Cretaceous",
        "Biozone_Stage": "Turonian",
        "FAD_Ma": 93.9,
        "LAD_Ma": 89.8,
        "Chronostratigraphic_Significance": "Early Turonian transgressive sea standard"
    },
    {
        "Taxon_Name": "Nummulites gizehensis",
        "Clade": "Foraminifera",
        "Geologic_Period": "Paleogene",
        "Biozone_Stage": "Lutetian",
        "FAD_Ma": 47.8,
        "LAD_Ma": 41.2,
        "Chronostratigraphic_Significance": "Eocene Tethyan carbonate bank marker"
    },
    {
        "Taxon_Name": "Otodus megalodon",
        "Clade": "Chondrichthyes",
        "Geologic_Period": "Neogene",
        "Biozone_Stage": "Miocene-Pliocene",
        "FAD_Ma": 23,
        "LAD_Ma": 3.6,
        "Chronostratigraphic_Significance": "Global apex marine macropredator datum"
    },
    {
        "Taxon_Name": "Carcharocles angustidens",
        "Clade": "Chondrichthyes",
        "Geologic_Period": "Paleogene",
        "Biozone_Stage": "Oligocene",
        "FAD_Ma": 33.9,
        "LAD_Ma": 23,
        "Chronostratigraphic_Significance": "Transitional otodontid tooth lineage"
    },
    {
        "Taxon_Name": "Turritella mortoni",
        "Clade": "Gastropoda",
        "Geologic_Period": "Paleogene",
        "Biozone_Stage": "Paleocene",
        "FAD_Ma": 61.6,
        "LAD_Ma": 56,
        "Chronostratigraphic_Significance": "Atlantic Coastal Plain Thanetian guide"
    },
    {
        "Taxon_Name": "Exogyra ponderosa",
        "Clade": "Bivalvia",
        "Geologic_Period": "Cretaceous",
        "Biozone_Stage": "Santonian-Campanian",
        "FAD_Ma": 85.8,
        "LAD_Ma": 70.6,
        "Chronostratigraphic_Significance": "Mesozoic giant gryphaeid oyster zone"
    },
    {
        "Taxon_Name": "Calycoceras naviculare",
        "Clade": "Ammonoidea",
        "Geologic_Period": "Cretaceous",
        "Biozone_Stage": "Cenomanian",
        "FAD_Ma": 95,
        "LAD_Ma": 93.9,
        "Chronostratigraphic_Significance": "Late Cenomanian Oceanic Anoxic Event OAE2"
    },
    {
        "Taxon_Name": "Hemiaster elegans",
        "Clade": "Echinoidea",
        "Geologic_Period": "Cretaceous",
        "Biozone_Stage": "Albian",
        "FAD_Ma": 113,
        "LAD_Ma": 100.5,
        "Chronostratigraphic_Significance": "Tethyan shallow echinoid biofacies"
    },
    {
        "Taxon_Name": "Hoplites dentatus",
        "Clade": "Ammonoidea",
        "Geologic_Period": "Cretaceous",
        "Biozone_Stage": "Middle Albian",
        "FAD_Ma": 109,
        "LAD_Ma": 106,
        "Chronostratigraphic_Significance": "Boreal Western European Gault clay datum"
    }
]