
Fig. 5. Drawing of retiolitid graptolite Spinograptus tubothecalis sp. nov., in obverse view, with reconstructed membranes. The ancora umbrella membrane is hypothetical. Note the short finite rhabdosome with characteristic two last tube−shaped thecae without genicular processes and very small and narrow appendix. Drawing AK.
Published as part of Kozłowska, Anna, Dobrowolska, Kinga & Bates, Denis E.B., 2013, A new type of colony in Silurian (upper Wenlock) retiolitid graptolite Spinograptus from Poland, pp. 85-92 in Acta Palaeontologica Polonica 58 (1) on page 91, DOI: 10.4202/app.2011.0020, http://zenodo.org/record/13278080
Hemichordata, Animalia, Pterobranchia, Retiolitidae, Biodiversity, Spinograptus, Taxonomy
Hemichordata, Animalia, Pterobranchia, Retiolitidae, Biodiversity, Spinograptus, Taxonomy
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