Forania Plegiospinosa, gen. et sp. nov.: A Zosterophyll from the Early Devonian of New Brunswick, Canada, with a Novel Emergence Type

Autor:	Patricia G. Gensel, Douglas P. Jensen
Rok vydání:	2013
Předmět:	Type (biology) Sensu Genus Ecology Botany Zosterophyllopsida Plant Science Biology biology.organism_classification Ecology Evolution Behavior and Systematics Devonian
Zdroj:	International Journal of Plant Sciences. 174:687-701
ISSN:	1537-5315 1058-5893
DOI:	10.1086/669914
Popis:	Premise of research. The zosterophylls are a group of primitive land plants that possess comparatively few characters useful in taxonomic distinction but vary considerably among these characters, such that a large number of genera and species are currently recognized. We studied specimens of a novel Early Devonian plant from New Brunswick, Canada, that further extends known variation within Zosterophyllopsida sensu Kenrick and Crane. After careful reevaluation of character and character-state utility in taxonomic circumscription among these simple early plants, we recognize this plant as a new genus and species, Forania plegiospinosa.Methodology. Preserved as adpressions, specimens were prepared with the standard paleobotanical techniques of degagement and maceration, with appropriate parts figured via LM.Pivotal results. Forania plegiospinosa is interpreted to be a decumbent plant, bearing stout, mostly retrorsely curved, spine-like emergences arranged in two rows along the axes, variable modes of branch...
Databáze:	OpenAIRE
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