FIGURE 1. Location maps: 1, a part of Europe with main localities of the material studied and indication of the main study area in the Polish Carpathians; 2, the main study area in the Polish Carpathians with indication of several localities of the material studied or reported occurrences of Tubulichnium rectum.
FIGURE 2. Holotype of Tubulichnium rectum (Fischer-Ooster, 1858) and some other key specimens described by Fischer-Ooster (1858) and Książkiewicz (1977), which are housed in the Naturhistorisches Museum der Burgergemeinde Bern (NMBE) in Switzerland and in the Nature Education Centre of the Jagiellonian University - Museum of Geology, Kraków, Poland, respectively: 1, holotype, originally Halymenites rectus Fischer-Ooster and Chondrites targionii (Cht), Gurnigel Flysch (Maastrichtian), Seeligraben near Gurnigelbad (Switzerland), specimen NMBE 5017471. Detail illustrated in 2 marked by the quadrangle; 2, detail of 1; 3, original of Halymenites minor Fischer-Ooster, 1858 and Chondrites intricatus (Chi) from Gurnigel Flysch (Maastrichtian), Seeligraben near Gurnigelbad (Switzerland), specimen NMBE 5017474; 4, original of Halymenites incrassatus Fischer-Ooster, 1858, Fähnernspitz, Upper Cretaceous, E Switzerland, specimen NMBE 5017470; 5, holotype of Tubulichnium incertum Książkiewicz, 1977 (yellow arrow), other specimen of the same ichnotaxon (Tr) and Scolicia vertebralis (Sv); Ropianka Formation (Inoceramian Beds), Upper Cretaceous-Paleocene, Bachów, Skole Nappe, specimen UJTF 938; 6, detail of 5 showing the holotype.
FIGURE 3. Tubulichnium rectum (Fischer-Ooster, 1858) on upper bedding surfaces from different formations: 1, on the upper surface of turbiditic marl with Chondrites intricatus (Chi), Pagliaro Formation (Paleocene), Cabella Ligure, Northern Apennines, Italy, field photograph; 2, curved example of T. rectum (Tr), Scolicia isp. (Sc) and Phycosiphon incertum (Ph), Ropianka Formation (Upper Cretaceous), Wara, Skole Nappe, Carpathians, Poland, UJTF 1426, Książkiewicz collection; 3, several specimens of T. rectum (Tr), some cross cut by Chondrites intricatus (Chi), Pagliaro Formation (Paleocene), Cabella Ligure, Northern Apennines, Italy, field photograph; 4, specimen with two (1, 2) superimposed pellet pavements. Inoceramian Beds (Upper Cretaceous-Paleocene), Słopnice, INGUJ144P190a; 5; specimens with elevated edges and collapsed roof, Inoceramian Beds (Upper Cretaceous-Paleocene), Słopnice, INGUJ144P140; 6, example of spindle-shaped burrow enlargement, Pagliaro Formation (Paleocene), Cabella Ligure, Northern Apennines, Italy, field photograph; 7, T. rectum cut by Ophiomorpha annulata (Oa), Inoceramian Beds (Upper Cretaceous-Paleocene), Słopnice, INGUJ143P66.
FIGURE 4. Tubulichnium rectum (Fischer-Ooster, 1858) on the lower bedding surfaces (1-3) of and in longitudinal (4) and transverse (5-10) cross-sections of turbiditic sandstones from the Inoceramian Beds (Upper-Cretaceous-Paleocene at Słopnice: 1, note external and internal parts INGUJ144P176; 2, note sandy mantle covering the pelleted part, INGUJ144P193a, 3, note wrinkles on the mantle, INGUJ144P187a; 4, longitudinal cross section (Tr), INGUJ144P193; 5-10, transverse sections, E - INGUJ144P182d, F - INGUJ144P180, G - INGUJ144P192b, H - INGUJ144P170a, I - INGUJ144P190, J - INGUJ144P192c, K - INGUJ144P192.
FIGURE 5. Macroscopic and microscopic and SEM observations of Tubulichnium rectum (Fischer-Ooster, 1858) occurring in turbiditic sandstones of the Inoceramian Beds (Upper Cretaceous-Paleocene), Słopnice, Poland (1, 4-8) and turbiditic marls of the Pagliaro Formation (Paleocene), Italy (2, 3): 1, specimen with elevated edges and bent down roof as seen on upper bedding surface (INGUJ144P195); 2, 3, depressions of pellets in the burrow margin after pellets have been partly or completely removed (INGUJ196P36 and 38); 4, photomicrograph of transverse cross-section; note deformed laminae above the collapsed burrow; 5, 6, burrow margin showing depressions of pellets that have been removed by weathering; 7, part of split pellets in place consisting of clay minerals and siliciclastic silt grains; 8, outer part of a split pellet showing platy minerals oriented ±parallel to surface.
FIGURE 6. Short sections showing position of Tubulichnium rectum and associated traces fossils in strata of the Ropianka Formation (Inoceramian Beds) at Słopnice, Magura Nappe, Carpathians, Poland. GPS coordinates: section A: 49°42.982'N, 020°20.448'E; section B: 49°42.974'N, 20°20.453'E, section C: 49°42.610'N, 20°20.687'E.