Estoniocaulis Obut et Rõtsk, 1958 and Rhadinograptus Obut, 1960 are not graptolites

Estoniocaulis Obut et Rõtsk, 1958 and Rhadtnograptus Obut, 1960 are not graptolites. Acta Palaeontologica Polonica, 36, 1, T7-81, 1991. Estoniocaulis jaesvensis Obut et RMsk, 1958 and Rhadinograptus jurgensonae Obut, 1960 from the Silurian of Estonia are redescribed. It is stated that both tam, regarded so far as inocaulid and dithecoid graptolites respecively, have nothing in common with the Graptolithina. These forms are treated as incertae sedis fossils (algae?).