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Pyrite disks or spindles are sometimes mistaken for fossils of sand dollars or other forms (see marcasite).Cracks, bumps, gas bubbles, and such can be difficult to distinguish from true fossils.
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The term dubiofossil is a portmanteau word used in geology and paleontology for a problematic structure that looks like a fossil but has an uncertain biologic origin. From Latin dubius, and English fossil, the word has been used mainly for remains found in rocks dating from the early history of the Earth (Precambrian rocks), but it is also applicable in other settings such as problematic ...
Bilinichnus simplex is a trace fossil from the Ediacaran period which consists of two parallel ridges on sandstone bed sole which have been interpreted as trails of peristaltic locomotion of a unknown gastropod-like animal leaving these traces behind [1] [2] or as pseudofossil of some kind.
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Arumberia is an enigmatic fossil from the Ediacaran period [1] originally described from the Arumbera Sandstone, Northern Territory, Australia [2] but also found in the Urals, [3] East Siberia, [4] England and Wales, [5] Northern France, [5] the Avalon Peninsula, [5] India [6] and Brazil. [7]
Eozoön canadense (literally, "dawn animal of Canada") is a pseudofossil. John William Dawson described the banded structures of coarsely crystalline calcite and serpentine as a gigantic Foraminifera , which was thought to be the oldest known fossil ( Dawson 1865 ).
Montage of multiple fossils. Clockwise from top left: Onychocrinus and Palaeosinopa; bottom row: Gryphaea and Harpactocarcinus A fossil (from Classical Latin fossilis, lit. ' obtained by digging ') [1] is any preserved remains, impression, or trace of any once-living thing from a past geological age.