Fig. 4 in A new type of colony in Silurian (upper Wenlock) retiolitid graptolite Spinograptus from Poland

Fig. 4. Retiolitid graptolite Spinograptus tubothecalis sp. nov. from Prągowiec 2, Colonograptus deubeli Biozone. A. ZPAL G. 47/6, paratype, distal end of rhabdosome with three well preserved thecae on one side and small appendix; distal view (A1), view towards the inside of last theca (A2), lateral view of whole specimen (A3), stereopair of the better preserved thecae (A4). B. ZPAL G. 47/7, distal end of rhabdosome with two last thecae and terminal structure; distal view of the whole fragment (B1); view to the inside of last theca (B2); terminal structure (B3).