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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.
Palaeotheriipus is known from both France and Iran, whereas Plagiolophustipus is currently known from Spain. [70] Two ichnospecies of Palaeotheriipus have been named. The type ichnospecies is Palaeotheriipus similimedius and based on the French material. These footprints are wider (140 mm (5.5 in)) than long (115 mm (4.5 in)), with fingers that ...
The ichnospecies is named in honor of Jerry MacDonald, the discoverer and local collector of the ichnofauna of the Robledo Mountains. The prints had a width of 25 mm (1 in) and consisted of symmetrical series of three to four pairs of impressions, large paddle-shaped outer tracks of 12 mm (0.5 in) in length and two or three internal linear ...
[2] [3] A second ichnospecies, P. lutevensis, was erected along with the type. P. lutevensis is from the Middle Triassic of France and was first described in 1984 as Rhynchosauroides lutevensis. It was reassigned on the basis of many similarities with P. mirus. [2] Prorotodactylus mirus tracks have been found in many localities.
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.
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.
Breviparopus (ichnotype B. taghbaloutensis) is the name given to an ichnogenus of dinosaur, having been made by an unknown genus of sauropod.As an ichnogenus, the taxon is represented by (and named for) a 90-metre (295 ft) long series of fossil tracks, or ichnites, found in the spring of 1979 in the Atlas Mountains of present-day Morocco.