A Guide to the identification and description for 205 spore taxa and
forms the basis for a refined biostratigraphy and palaeogeography
Devonian spores from 16 subsurface successions in Saudi Arabia and North
Africa are systematically documented to characterize assemblages for the
northern margin of western Gondwana. The taxonomic study provides the
identification and description for 205 spore taxa and forms the basis
for a refined biostratigraphy and palaeogeography. Most species are
illustrated by multiple specimens to document morphological variation
and the effects of taphonomy. Numerous species have considerable
morphological variability and require examination of larger populations
to become fully understood. These spores show intergrading morphological
variation and were grouped into morphons. Although a majority of spore
species were previously described, many others are new and endemic to
north-western Gondwana.