Paleozoic seed ferns

Heterangium kentuckyensis sp. nov., from the Upper Carboniferous of North America.

Kathleen Pigg, T. N. Taylor, R. A. Stockey

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Heterangium kentuckeyensis sp. nov. is described from Lower/Middle Pennsylvanian sediments of eastern Kentucky, based on permineralized stems, petioles, frond members, laminar foliage, and roots, including several organs in attachment. The characters used to distinguish the subgenera of Heterangium are evaluated and found to be unreliable. Moreover, suggested phylogenetic schemes both within Heterangium and between this taxon and other lyginopterid pteridosperms based on these features are inconsistent with stratigraphic data. Until reproductive features are known, the classification of Heterangium species is best based on characters of the vegetative sporophyte, including stelar organization, cortical histology, and frond morphology. - from AuthorsKentucky new taxon

Original languageEnglish (US)
Pages (from-to)1184-1204
Number of pages21
JournalAmerican Journal of Botany
Volume74
Issue number8
StatePublished - 1987
Externally publishedYes

Fingerprint

Ferns
sporophyte
histology
fronds
Pennsylvanian
fern
new taxon
North America
ferns and fern allies
foliage
Seeds
Histology
Paleozoic
stem
phylogenetics
seed
new species
petioles
seeds
new taxa

ASJC Scopus subject areas

  • Plant Science

Cite this

Paleozoic seed ferns : Heterangium kentuckyensis sp. nov., from the Upper Carboniferous of North America. / Pigg, Kathleen; Taylor, T. N.; Stockey, R. A.

In: American Journal of Botany, Vol. 74, No. 8, 1987, p. 1184-1204.

Research output: Contribution to journalArticle

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