The continuous variation in a group of Late Devonian—Early Carboniferous camerate spores from southern Ireland, assigned to species of Auroraspora, Colatisporites and Endoculeospora can be denoted by recognizing the Auroraspora macra morphon. This non-typological unit is introduced by discussing: (1) the taxonomy of the constituent species [Auroraspora macra Sullivan 1968, A. hyalina (Naumova) Streel in Becker et al. 1974, A. asperella (Kedo) nov. comb. Van der Zwan, Colatisporites decorus (Bharadwaj et Venkatachala) Williams in Neves et al. 1973, and Endoculeospora gradzinskii Turnau 1975]; (2) the continuous morphological variation; and (3) the biostratigraphical application, as well as the related form Auroraspora rectiformis (Naumova) nov. comb. Van der Zwan
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