SynopsisWell-preserved compression material of Zosterophyllum myretonianum Penhallow from the Lower Old Eed Sandstone in Angus has yielded additional information about the structure of this plant, one of the earliest known types of vascular land plants. It is the earliest plant in which the structure of the epidermal cuticle, stomata and complete tracheids has been clearly demonstrated. The basal regions of the plant are found to consist of branching axes some with arrested or dormant side branches. Simple dichotomy into two equal and similarly orientated branches is rare. H-type branching and some modifications of it are of frequent occurrence in the basal region of the plant. Parts of this region of the plant have no stomata although a cuticle was present. The upright fertile axes rarely branched.

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Miospore assemblages are, for the first time, recorded from the Talchir Boulder Bed and overlying Needle Shales in the South Rewa Basin: The Boulder Bed assemblage contains 13 genera and 20 species, while the Needle shales have 17 genera and 24 species. Both assemblages, having several common taxa, are predominated by monosaccate pollen as is generally characteristic of other known Talchir miofloras. In the details of composition, however, the Boulder Bed assemblage of South Rewa appears to be distinct from that recorded from similar sediments of the Jayanti Coalfield. The present findings lend further support to the existence of the Glossopteris Flora during course of the Gondwana glaciation.

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