K
Kathleen B. Pigg
Researcher at Arizona State University
Publications - 82
Citations - 2092
Kathleen B. Pigg is an academic researcher from Arizona State University. The author has contributed to research in topics: Glossopteris & Isoetales. The author has an hindex of 30, co-authored 77 publications receiving 1902 citations. Previous affiliations of Kathleen B. Pigg include Ohio University & Florida Museum of Natural History.
Papers
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Journal ArticleDOI
Evolution of Isoetalean Lycopsids
TL;DR: The lycopsid reduction series proposed the derivation of the extant guillwort Isoetes from the Carboniferous lepidodendrids through a progressive reduction in both stems and stigmarian rooting systems.
Journal ArticleDOI
Isoetalean Lycopsid Evolution: from the Devonian to the Present
TL;DR: It is interesting that several morphological characters of modern Isoetes are present as early as the Triassic: monolete microspores, sunken sporangia and elaborate ligules with glossopodia occur within elongate-stemmed Triassic forms.
Journal ArticleDOI
Chaloneria Gen. Nov.; Heterosporous Lycophytes from the Pennsylvanian of North America
Kathleen B. Pigg,Gar W. Rothwell +1 more
TL;DR: Several hundred permineralized fragments of a single type of plant occur in upper Pennsylvanian coal balls from the Appalachian Basin, and these provide evidence for the description and complete reconstruction of a new heterosporous lycophyte.
Journal ArticleDOI
A brief review of the fossil history of the family Rosaceae with a focus on the Eocene Okanogan Highlands of eastern Washington State, USA, and British Columbia, Canada
TL;DR: The complexity seen in Eocene Rosaceae suggests that hybridization and polyploidy may have played a pivotal role in the early evolution of the family.
Book ChapterDOI
The Fossil History of Quercus
Eduardo Barrón,Anna Averyanova,Zlatko Kvaček,Arata Momohara,Kathleen B. Pigg,Svetlana Popova,José María Postigo-Mijarra,Bruce H. Tiffney,Torsten Utescher,Zhe-Kun Zhou +9 more
TL;DR: In this paper, the first synthesis of the fossil history of the oaks from their appearance in the early Paleogene to the Quaternary is presented, from the 19th century to the present day.