Ichnogenus (fossil burrows), generally considered to be a dwelling or resting burrow of actinarians, refer Jensen, ... [details]
Ichnogenus (fossil burrows). [details]
From Jensen, 1997: Most authors use Cruziana and Rusophycus as separate ichnogenera, emphasizing the predominant ... [details]
Ichnogenus (ridges believed to be made by swimming arthropods e.g. trilobites). From Jensen, 1997: Seilacher (1985, ... [details]
From Jensen, 1997: Following the recommendation of Tromelin & Lebesconte ( 1876; see also Peneau 1946), Fraena is today ... [details]
Ichnogenus (fossil burrows). Several species questionably assigned to this genus by Walcott, 1899 were reassigned ... [details]
Ichnogenus (fossil burrow). [details]