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The ichnogenus Thalassinoides: burrow fossil produced by crustaceans from the Middle Jurassic, Makhtesh Qatan, southern Israel. An ichnotaxon (plural ichnotaxa) is "a taxon based on the fossilized work of an organism", i.e. the non-human equivalent of an artifact.
Sphingopus type footprints are known from two locations. Fossils dating 228–245 million years have been recovered from what appears to have been a lagoon in the Grès d'Antully Formation in Saône-et-Loire, France.
Conostichus is a plug-shaped vertical trace fossil, with a diameter varying from half to double the height. [1] Transverse constrictions and longitudinal fluting may be present, while the burrow fills occasionally show concentric laminae.
Ichniotherium (meaning "marking creature") is an ichnogenus of tetrapod footprints from between the Late Carboniferous period to the Early Permian period attributed to diadectomorph track-makers.
The confusing history of dinosaur footprints means many kinds of theropod tracks have been put into the Megalosauripus ichnogenus, [4] even though they were an entirely different ichnospecies. This makes it hard to piece together what exactly is Megalosauripus , and what is not.
Sketch by Richter (1926) showing spreite in a Diplocraterion parallelum burrow.. Diplocraterion is an ichnogenus describing vertical U-shaped burrows having a spreite (weblike construction) between the two limbs of the U. [1] [2] The spreite of an individual Diplocraterion trace can be either protrusive (between the paired tubes) or retrusive (below the paired tubes). [3]
Planolites is an ichnogenus found throughout the Ediacaran and the Phanerozoic that is made during the feeding process of worm-like animals.The traces are generally small, 1–5 mm (0.039–0.197 in), unlined, and rarely branched, with fill that differs from the host rock.
Machichnus is an ichnogenus.It was erected by Mikuláš et al. (2006) for shallow, thin, discrete, parallel to subparallel, smooth-bottomed scratches, occurring on bone tissue in small groups or series.