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| Graptolite Net | Graptolites & Graptoliters | Relationships among Graptolites | Edited by Piotr Mierzejewski |
| Tuboid graptolites from erratic boulders of Poland by Piotr Mierzejewski Acta Palaeontologica Polonica 1978, 23, 4, 557-575 |
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| GRAPTOLITE NET is edited by Piotr Mierzejewski, the Count of Calmont and Countess Maja A. Korwin-Kossakowska since 2002 |
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| PORTAL OF GRAPTOLITES AND PTEROBRANCHS |
| Abstract. Cyclograptidae (=Idiotubidae) are described from the Ordovician to Silurian erratic boulders of Poland. Some problems involved in tuboid taxonomy and colony organization are considered. One new genus (Kozlowskitubus gen.n.) and three new species (Epigraptus eisenacki sp.n., E. kozlowskii sp.n., Dendrotubus bulmani sp.n.) are erected. Names Idiotubus Kozłowski, 1949 and Idiotubidae Kozłowski, 1949, were recognized for junior synonyms of Epigraptus Eisenack, 1941, and Cyclograptidae Bulman, 1938, respectively. |
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| Dendrotubus sp. Upper Ludlovian. Fragment of colony with partially preserved two isolated autothecae and a thecal group. |