Estoniocaulis Obut et Rötsk, 1958 and Rhadinograptus Obut, 1960 are not graptolites
Piotr Mierzejewski
Acta Palaeontologica Polonica 36 (1), 1991: 77-81
Estoniocaulis jaervensis Obut et Rötsk, 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?).
Key words: organic microfossils, graptolites, algae, Silurian, Estonia.
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