Mángano, M. G. & Buatois, L. A., 2011.
Timing of infaunalization in shallow-marine early Paleozoic communities in Gondwanan settings: discriminating evolutionary and paleogeographic controls.Palaeontologia Electronica14,
Vinn, O. 2005.
The tube ultrastructure of serpulids (Annelida, Polychahaeta) Pentaditrypa subtorquata, Cretaceous, and Nogrobs cf. vertebralis, Jurassic, from Germany.Proceedings of the Estonian Academy of Sciences. Geology54,
Mikuláš R. & Dronov, A. V. 2005.
Trace fossils.The Sixth Baltic Stratigraphical Conference. Cambrian and Ordovician of St. Petersburg Region, Guidebook for the pre-conference field trip. Dronov, A.V., Tolmacheva T., Raevskaya E. (Eds.), pp. 33-38.
Vinn, O. 2004.
The earliest known Trypanites borings in the shells of articulate brachiopods from the Arenig (Ordovician) of Baltica.Proceedings of the Estonian Academy of Sciences. Geology53,
Jensen, S. & Mens, K. 2001.
Trace fossils Didymaulichnus cf. tirasensis and Monomorphichnus isp. from the Estonian Lower Cambrian, with a discussion on the early Cambrian ichnocoenoses of Baltica.Proceedings of the Estonian Academy of Sciences. Geology50,
Palij, V. M., Posti, E. & Fedonkin, M. A. 1983.
Soft-bodied metazoa and animal trace fossils in the Vendian and early Cambrian.Upper Precambrian and Cambrian palaeontology of the East European Platform. Eds: Urbanek, A. & Rozanov, A. Yu. , pp. 56-94.
Elias, R. J. 1980.
Borings in solitary rugose corals of the Selkirk Member, Red River Formation (late Middle or Upper Ordovician), souther Manitoba.Canadian Journal of Earth Sciences17,
Hecker, R. F. 1980.
Traces of invertebrates and stigmarids in marine sediments of the Lower Carboniferous of the Moscow syncline.Transactions of the Paleontological Institute (PIN)178,
Hofmann, H. J. 1979.
Chazy (Middle Ordovician) trace fossils in the Ottawa - St. Lawrence Lowlands.Geological Survey of Canada Bulletin ,
Palij, V. M. 1976.
Remains of soft-bodied animals and trace fossils from the upper Precambrian and Lower Cambrian of Podolia.Paleontology and stratigraphy of the Upper Precambrian and Lower Paleozoic of the southwest of the East European Platform. Ed. Shulga P. L., pp. 63-77.
Stel, J. H. 1976.
The Palaeozoic hard substrate trace fossils Helicosalpinx, Chaetosalpinx and Torquaysalpinx.Neues Jahrbuch für Mineralogie, Geologie und Paläontologie. Monatshefte: Abt. B. Geologie, Paläontologie12,
Männil, Ralf 1966.
Vertical burrows in Ordovician limestones of the Baltic.The organism and environment in the geological past. Ed: Hecker, R. F., pp. 200-207.