Urbanek and Mierzejewski (1984) defined the reticulate fabric as follows:
"(i) the presence of wavy, branching or anastomosing fibrous material of varying thickness, including gross fibres, (ii) the reticular arrangement of fibrils and fibres to produce an irregular meshwork, (iii) the absence of clearly defined sheets separating indivicual layers and indistinct layering in general, and (iv) the presence of thick, electron dense intercalations separating entire groups of layers."
"The nature of 'reticulate fabric' remains obscure. Its features listed above may be primary (being another exampled of the ramarkablepolymorphism of collagen) or secondary. In this latter case the unique features of the 'reticulate fabric' are merely a product of preservational degradation".
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Source:
Urbanek, A. and Mierzejewski, P. 1986. A possible new pattern of cortical deposit in Tremadoc dendroid graptolites from chert nodules. - Geological Society Special Publication No. 20, 13-19.
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