The ultrastructure, development, and systematic position of the graptolite genus Mastigograptus Author Bates, Denis E. B. Author Urbanek, Adam text Acta Palaeontologica Polonica 2002 2002-12-31 47 3 445 458 journal article 300548 10.5281/zenodo.13173625 e1992fb4-7e66-4a43-ad41-4c8962d41bbe 1732-2421 13173625 Order Mastigograptida nov. Diagnosis .—Cylindrical sicula, budding in triads, dendroid habitus but stipes produced by chain of corticalized stolothecae with thin−walled free thecae, displaying random arrangementsofobliquesutures,andnotrevealingadistinctdimorphism. Stratigraphic distribution .—Cambrian–Silurian.