About: Dioonopsis Horiuchi et Kimura leaves from the Eocene of western North America: a Cycad shared with the Paleogene of Japan

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About: Dioonopsis Horiuchi et Kimura leaves from the Eocene of western North America: a Cycad shared with the Paleogene of Japan Goto Sponge NotDistinct Permalink

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Reinvestigation of cycadalean leaf and leaflet remains from the Eocene of Hamilton Bay, Alaska, and La Porte, California, using features of epidermal anatomy as well as macromorphology, indicates that these remains, which were formerly assigned to modern cycad genera, conform to the extinct genus Dioonopsis Horiuchi et Kimura first described from the Paleocene of Japan. Recognition of Dioonopsis praespinulosa (Hollick) Erdei, Manchester et Kvacek comb. nov. from Alaska and Dioonopsis macrophylla (Potbury) Erdei, Manchester et Kvacek comb. et stat. nov. from California supports the existence of the Dioonopsis lineage in North America during the early Cenozoic. The occurrence of this genus in the Eocene of western North America as well as Japan, combined with its apparent absence in the European Tertiary, indicates that it probably spread via the Beringial phytogeographic pathway and was thus adapted to occupy high-latitude environments. Among modern cycad genera, Dioon fits best to the macro- and micromorphology of Dioonopsis and may be a remnant of a lineage closely related to that of Dioonopsis. Reinvestigation of cycadalean leaf and leaflet remains from the Eocene of Hamilton Bay, Alaska, and La Porte, California, using features of epidermal anatomy as well as macromorphology, indicates that these remains, which were formerly assigned to modern cycad genera, conform to the extinct genus Dioonopsis Horiuchi et Kimura first described from the Paleocene of Japan. Recognition of Dioonopsis praespinulosa (Hollick) Erdei, Manchester et Kvacek comb. nov. from Alaska and Dioonopsis macrophylla (Potbury) Erdei, Manchester et Kvacek comb. et stat. nov. from California supports the existence of the Dioonopsis lineage in North America during the early Cenozoic. The occurrence of this genus in the Eocene of western North America as well as Japan, combined with its apparent absence in the European Tertiary, indicates that it probably spread via the Beringial phytogeographic pathway and was thus adapted to occupy high-latitude environments. Among modern cycad genera, Dioon fits best to the macro- and micromorphology of Dioonopsis and may be a remnant of a lineage closely related to that of Dioonopsis. (en)
Title	Dioonopsis Horiuchi et Kimura leaves from the Eocene of western North America: a Cycad shared with the Paleogene of Japan Dioonopsis Horiuchi et Kimura leaves from the Eocene of western North America: a Cycad shared with the Paleogene of Japan (en)
skos:prefLabel	Dioonopsis Horiuchi et Kimura leaves from the Eocene of western North America: a Cycad shared with the Paleogene of Japan Dioonopsis Horiuchi et Kimura leaves from the Eocene of western North America: a Cycad shared with the Paleogene of Japan (en)
skos:notation	RIV/00216208:11310/12:10128512!RIV13-MSM-11310___
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM0021620855)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Kvaček, Zlatko
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	131396
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/12:10128512
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	phytogeography; paleobotany; North America; foliage; Eocene; Dioonopsis; cycad (en)
http://linked.open.../riv/klicoveSlovo	Eocene Dioonopsis cycad paleobotany phytogeography North America foliage
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[0C0F1A34D431]
http://linked.open...i/riv/nazevZdroje	International Journal of Plant Sciences
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	173
http://linked.open...iv/tvurceVysledku	Kvaček, Zlatko Erdei, Boglarka Manchester, Steven R.
http://linked.open...ain/vavai/riv/wos	000299022300008
http://linked.open...n/vavai/riv/zamer	Material flow mechanisms in the upper spheres of the Earth
issn	1058-5893
number of pages	15 (xsd:int)
http://localhost/t...ganizacniJednotka	11310

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