Traces of Augoichnus dituberculatus gen. et sp. nov. on Hypermorphocrinus magnospinosus from the Lower Permian of Cisura...
Published in Paleontological Journal
Traces of Augoichnus dituberculatus on Hypermorphocrinus magnospinosus and some other crinoids are described from the reef deposits of the Sarginian Horizon near the village of Ryabinovka, in the vicinity of Krasnoufimsk. Usually these are groups of shallow depressions, egg-shaped in outline, 4–5 mm long, similarly oriented, with a marginal groove,...