Lycopsida

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Related to Lycopsid: gymnosperm

Lycopsida

a subdivision of the TRACHEOPHYTA including the club mosses Lycopodium and related species.
References in periodicals archive ?
Plint and Browne (1994) documented Stigmaria at positions equivalent to ~169 m, 754 m, and 854-874 m and in-situ lycopsid trunks at ~869 m and ~872 m.
of arborescent lycopsids, calamites, cordaites), to which root climbers may have been attached, are often not well preserved, and the climbers may have been separated from the stems during fossilization and/ or diagenesis.
By mid-August, Don and Lucy turned east to meet up with the others, who had just discovered tetrapod remains in upright lycopsid tree stumps near Florence, on the northeastern side of the island (Fig.
Diversity changes in lycopsid and aquatic fern megaspores through geologic time.
A drowned lycopsid forest above the Mahoning coal (Conemaugh Group, Upper Pennsylvanian) in eastern Ohio, USA.
For the first time, it became clear that coal originated as a peaty soil beneath a lycopsid forest, rather than as a transported log jam--a hypothesis earlier favoured by Lyell (1830-33).
The first convincing argument for the terrestrial origin of coal had come from Logan's observations (1841) that Stigmaria were the roots of lycopsid trees in their original position of growth.
Having personally witnessed a 25-foot-tall standing lycopsid trunk and discovering that Gesner once measured one 40 feet tall (Lyell 1842; Wilson 1998), Lyell wrote to his sister that the Joggins fossil forests were "the most wonderful phenomenon perhaps that I have ever seen" (30 July 1842, in K.
134), which yielded structurally preserved lycopsid and cordaitalean axes.
Drifted lycopsid plants predominate in the basal limestones, whereas overlying siltstones and sandstones contain a mixed suite of drifted gymnosperms (cordaitaleans), sphenopsids (primarily calamiteans), pteridosperms and putative progymnosperms (Falcon-Lang 2003a).