Rusophycus Hall, 1852

Taxon description

Hammersburg et al., 2018

Diagnosis.—Small to large bilobate mounds or depressions with parallel or merged lobes near the posterior; parallel to oblique to transverse striations; however, some specimens may be smooth (Crimes, 1970b, Osgood, 1970; Alpert, 1976a; Fillion & Pickerill, 1990; Keighley & Pickerill, 1996).


Keighley & Pickerill, 1996a

Diagnosis: Short (length to width ratio less than 2:1) interfacial bilobate burrow or surface mark resembling a coffee-bean, preserved in convex hyporelief (or, potentially, concave epirelief), Ovate lobes parallel to slightly divergent and may be smooth or exhibit transverse to oblique scratch marks (after Osgood, 1970; Alpert, 1976; Fillion and Pickerill, 1990).

Selection of related publications
Vinn, O., Toom, U. 2016. Rare arthropod traces from the Ordovician and Silurian of Estonia (Baltica). Neues Jahrbuch für Geologie und Paläontologie. Abhandlungen 280, 2, 135-141. DOI:10.1127/njgpa/2016/0570
Knaust, D. 2004. Cambro-Ordovician trace fossils from the SW-Norwegian Caledonides. Geological Journal 39, 1, 1-24. DOI:10.1002/gj.941
Palij, V. M., Posti, E., Fedonkin, M. A. 1979. Soft-bodied Metazoa and trace fossils of Vendian and Lower Cambrian. Upper Precambrian and Cambrian Paleontology of East-European Platform, pp. 49-82.
Bergström, J. 1970. Rusophycus as an indication of early Cambrian age. Geological Journal 3, 35-42. Trace Fossils, pp. 35-42.
References based on distribution