Figures

Figure 15.25   Graptolite ultrastructure: (a) collage of Geniculograptus rhabdosome showing banded fusellar tissue (50); (b) detailed section through part of a rhabdosome showing relatively thin, parallel sheet fabric (top) and criss-cross fusellar fabric (below) (1000); and (c) detail of aperture exterior of Geniculograptus showing the development of bandages (500). (Courtesy of Denis Bates.)

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