Czy różnice ichnotaksonomiczne między tropami lacertoidów z piaskowca tumlińskiego odzwierciedlają różnice biotaksonomiczne twórców?
Abstract
Do ichnotaxonomic differences between lacertoid tracks from the Tumlin Sandstone reflect producer biotaxonomic differences?
A b s t r a c t. The Tumlin Sandstone is an eolian unit of disputable age (Late Permian or Early Triassic), exposed at the north-western border of the Holy Cross Mts., Central Poland. It contains abundant and diversified invertebrate and vertebrate trace fossils. The present paper considers ichno-biodiversity relation of lacertoid tracks and their producers occurring in the considered unit. A neoichnological experiment indicates that the recent lacertoid, Pogona vitticeps can produce morphologically diversified tracks which in fossil record would possibly be ascribed to different ichnogenera. The recorded variability range is qualitatively comparable to that of lacertoid tracks from the Tumlin Sandstone. It is thus possible that morphologically diversified lacertoid ichnogenera from the Tumlin Sandstone were produced by a single species. In consequence, morphologically diversified lacertoid ichnogenera from the Tumlin Sandstone might not be the equivalents of anatomically differentiated animals.
A b s t r a c t. The Tumlin Sandstone is an eolian unit of disputable age (Late Permian or Early Triassic), exposed at the north-western border of the Holy Cross Mts., Central Poland. It contains abundant and diversified invertebrate and vertebrate trace fossils. The present paper considers ichno-biodiversity relation of lacertoid tracks and their producers occurring in the considered unit. A neoichnological experiment indicates that the recent lacertoid, Pogona vitticeps can produce morphologically diversified tracks which in fossil record would possibly be ascribed to different ichnogenera. The recorded variability range is qualitatively comparable to that of lacertoid tracks from the Tumlin Sandstone. It is thus possible that morphologically diversified lacertoid ichnogenera from the Tumlin Sandstone were produced by a single species. In consequence, morphologically diversified lacertoid ichnogenera from the Tumlin Sandstone might not be the equivalents of anatomically differentiated animals.