Cruziana d’Orbigny, 1842
Elongate, bilobate ribbon-like furrows with medial ridges (concave epirelief) or medial grooves (convex hyporelief) and furrows are covered by a herring-bone-like, transverse, longitudinal striations.
Repichnia (locomotion), fodinichnia (deposit feeding); Crawling trail, dwelling or feeding burrow, or digging trace of a deposit-feeding organism.
Shallow to deep marine settings and some freshwater deposits.
Trilobites, arthropods, and branchiopods (shield shrimp).
Bromley and Asgaard 1979, Fillion and Pickerill 1990, Hammersburg et al. 2018.
Trilobites produced Cruziana
up until the end Permian. After the Permo-Triassic extinction, Cruziana
was produced by marine arthropods and freshwater arthropods. Zonneveld et al., 2002 described Cruziana
-like burrows constructed by crustaceans that may better be placed within Reniformichnus
(Bordy and Krummeck 2018). Isopodichnus
has been regarded as a junior synonym of Cruziana