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Index fossils must have a short vertical range, wide geographic distribution and rapid evolutionary trends. Another term, "zone fossil", is used when the fossil has all the characters stated above except wide geographical distribution; thus, they correlate the surrounding rock to a biozone rather than a specific time period.
Most of the generic names in this list come from Jack Sepkoski's 2002 compendium of marine fossil genera, which can be corroborated by other sources such as Part L, Ammonoidea, in the Treatise on Invertebrate Paleontology. Additional generic names included come from the Treatise or various peer review scientific journals.
State fossils are distinct from other state emblems like state dinosaurs, state stones, state minerals, state gemstones or state rocks and a state may designate one, a few, or all of those. For example, in Arizona , the state stone is turquoise and the state dinosaur is Sonorasaurus thompsoni yet the state fossil is petrified wood .
Illustrates the fossil range of a taxon, the geological range of a stratigraphic unit, or other ranges on a geological timescale. Intended for use in {{taxobox}}es, {{Infobox rockunit}} s, and other infoboxes. For pre-Phanerozoic ages, see {{Long fossil range}}. You can give a numeric range, or specify the periods involved.
Print/export Download as PDF; Printable version; In other projects ... This article contains a list of fossil-bearing stratigraphic units in the state of Nevada, U.S ...
Fossil of the Middle-Late Ordovician trilobite Ceraurus †Ceraurus †Ceraurus milleranus †Ceraurus pleurexanthemus – or unidentified comparable form †Cestites †Cestites mirabilis †Champlainopora – tentative report †Chasmataspis †Chasmataspis laurencii †Chasmatopora †Chasmatopora sublaxa †Chaulistomella †Chaulistomella ...
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Fossil of the Carboniferous-Late Cretaceous petrified conifer wood morphogenus Dadoxylon †Dadoxylon †Daharella †Daharella crassa – type locality for species †Daharella pattersonia – type locality for species †Daharella ramosa †Daixites †Daixites meglitskyi – or unidentified comparable form †Dakeoceras – tentative report