Adinosporus bullatus STROTHER , 2016

Adinosporus bullatus STROTHER, 2016

Text-fig. 5a–f

In this taxon the spore walls have an outer layer that appears to be homogeneous, although we recognize that, in this case, diagenetic fusion may be masking an underlying laminar construction. This interpretation is supported by areas where the surface appears to be delaminating ( Text-fig. 5c, d, e, f, arrows). The outer layer ranges in thickness from 150 to 700 nm ( Text-fig. 5b–f). Lining each of the lumens of the dyads is a single (or possibly two) lamina(e) 30–60 nm in thickness. The dark spots (bullae) that characterize this taxon are formed by darkly staining, likely organic deposits, that form in spaces where the inner laminae have folded up and/or collapsed toward the contact area ( Text-fig. 5b, c, e, f). Two specimens (Rog 2ox2-4, Rog 2-2-1) are figured here.