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The trackway Protichnites from the Cambrian, Blackberry Hill, central Wisconsin. A trace fossil, also known as an ichnofossil (/ ˈ ɪ k n oʊ f ɒ s ɪ l /; from Greek: ἴχνος ikhnos "trace, track"), is a fossil record of biological activity by lifeforms but not the preserved remains of the organism itself. [1]
Trace macrofossils are fossilized evidence of animal behavior. These may include tracks, burrows and dung . [11] Trace fossils are the primary type of fossils used by paleontologist to reconstruct extinct animal behaviors. The study of these fossils is called Ichnology. [12]
Skolithos in a bed of the Dakota Formation, New Mexico, US. Skolithos (formerly spelled Scolithus or Skolithus [1]) is a common trace fossil ichnogenus that is, or was originally, an approximately vertical cylindrical burrow with a distinct lining. It was produced globally by a variety of organisms, mostly in shallow marine environments, and ...
A fossil track or ichnite (Greek "ιχνιον" (ichnion) – a track, trace or footstep) is a fossilized footprint. This is a type of trace fossil. A fossil trackway is a sequence of fossil tracks left by a single organism. Over the years, many ichnites have been found, around the world, giving important clues about the behaviour (and foot ...
Gastrochaenolites is a trace fossil formed as a clavate (club-shaped) boring in a hard substrate such as a shell, rock or carbonate hardground.The aperture of the boring is narrower than the main chamber and may be circular, oval, or dumb-bell shaped. [2]
Trace fossils, also called ichnofossils, are structures preserved in sedimentary rocks that record biological activity. Wikimedia Commons has media related to Trace fossils . See also: Wikipedia:WikiProject Paleontology
Cruziana from the Devonian Brallier Formation or Harrell Formation.. Cruziana is a trace fossil (fossil records of lifeforms' movement, rather than of the lifeforms themselves) consisting of elongate, bilobed, approximately bilaterally symmetrical burrows, usually preserved along bedding planes, with a sculpture of repeated striations that are mostly oblique to the long dimension.
When a type locality is listed as the site for a formation with many good outcrops, the site is flagged with a note ([Note 2]). When a particular site of note is listed for an extensive fossil-bearing formation, but that site is somehow atypical, it is also flagged with a note ([Note 3]).