Tropy gadów i ślady wleczenia na powierzchni piaskowca refu z Jarug pod Ostrowcem Świętokrzyskim

Abstract

REPTILE TRACKS AND DRAGGING TRACES ON THE ROETHIAN SANDSTONE SURFACE OBSERVED IN JARUGI NEAR OSTROWIEC ŚWIĘTOKRZYSKI (CENTRAL POLAND)Reptile tracks, firstly described by J. Samsonowicz (1929), have been observed in the north-eastern margin of the Święty Krzyż Mts. In addition, beside the tracks there are also found some dragging traces and traces of drying out, as well as wave activity traces and worm tubes (Table I, II, III; Figs 1-3). This allows us to assume that we have to do here with the shallow water deposits connected with some periods of short-lived but violent floods, during which the plant remains carried by waters, f. ex. branches or roots, were responsible for dragging traces produced on the bottom. During the subsidence of the flood waters a layer of clay or silt was formed on the surface. After the subsidence of waters, the reptiles walking on the silt that was only partly dried off, left behind some 2-2,2 cm deep traces.