Taeniopterid lamina on Phasmatocycas megasporophylls (Cycadales) from the Lower Permian of Kansas, U.S.A.

Gillespie, William H.; Pfefferkorn, Hermann W.

doi:10.1016/0034-6667(86)90069-2

Cited by 33 publications

(23 citation statements)

References 10 publications

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“…Another factor explaining the dearth of skeletonization at CCP is that the site harbors a high proportion of host plant taxa that displayed robustly thickened laminae with considerable interstitial tissue development, as well as massive petioles and primary veins, supporting fibers, abundant bundle sheaths, and sclerenchymatous, cuticular, and other structural tissues ( fig. 15; Gillespie and Pfefferkorn 1986;Chaney et al 2009;Looy 2013). These structural features would have impeded access of herbivores to leaf tissues, particularly for Taeniopteris and Auritifolia.…”

Section: Patterns Of Arthropod Herbivory At Ccpmentioning

confidence: 95%

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Plant-Insect Interactions from Early Permian (Kungurian) Colwell Creek Pond, North-Central Texas: The Early Spread of Herbivory in Riparian Environments

Schachat

Labandeira

Gordon

et al. 2014

International Journal of Plant Sciences

102

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Section: Patterns Of Arthropod Herbivory At Ccpmentioning

confidence: 95%

“…(e.g., Gillespie and Pfefferkorn 1986), and the peltasperm Auritifolia waggoneri ). Although we are considering Taeniopteris spp.…”

Section: The Ccp Flora and Comparisons To Relevant Early Permian Florasmentioning

confidence: 99%

Plant-Insect Interactions from Early Permian (Kungurian) Colwell Creek Pond, North-Central Texas: The Early Spread of Herbivory in Riparian Environments

Schachat

Labandeira

Gordon

et al. 2014

International Journal of Plant Sciences

102

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“…12, 14). These include such plants as Taeniopteris, a polyphyletic form taxon among which are possible cycad precursors (Cridland and Morris 1960;Mamay 1976;Kerp 1983;Winston 1983;Gillespie and Pfefferkorn 1986;Axsmith et al 2003), as well as ferns Plants typically identified as having wetland affinities are a highly variable component of seasonally dry assemblages ( fig. 16).…”

Section: Dryland Floral Compositionmentioning

confidence: 99%

Wetland-Dryland Vegetational Dynamics in the Pennsylvanian Ice Age Tropics

DiMichele¹

2014

International Journal of Plant Sciences

158

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Premise of research. The Late Paleozoic Ice Age was the last extensive pre-Pleistocene ice age. It includes many climate changes of different intensities, permitting examination of many and varied biotic responses. The tropical Pennsylvanian Subperiod, usually visualized as one vast wetland coal forest, in fact also was dominated, periodically, by seasonally dry vegetation that, in turn, covered most of the central and western Pangean supercontinent. Equatorial wetland and dryland biomes oscillated during single glacial-interglacial cycles. This recognition changes understanding of the Coal Age tropics; examination of their spatiotemporal patterns indicates that these vegetation types responded differently to global environmental disturbances and long-term trends and points to potentially different underlying controls on evolutionary histories of their component lineages.Methodology. This study is based on the published literature and on examination of geological exposures and fossil floras, mainly from North America but also from other parts of the world.Pivotal results. Wetlands and seasonally dry habitats were equally part of the Coal Age Pangean tropics. They dominated these landscapes at different times, under different climatic regimes. Wetland vegetation was likely forced into refugia during seasonally dry (subhumid to semiarid) parts of glacial-interglacial cycles; it reemerged/reassembled during wet (humid to perhumid) periods. Seasonally dry vegetation resided permanently in areas of western and central Pangea and in microhabitats within the Central Pangean Mountains. Both floras had lower biodiversity than modern floras in similar habitats. The wetland flora species pool was more phylogenetically disparate than any modern vegetation. In contrast, seasonally dry floras were dominated by seed plants. These biomes responded differently to acute environmental changes and chronic long-term aridification.Conclusions. From ecological or evolutionary perspectives, the present-day world is but one possibility. Lower-diversity worlds such as the late Paleozoic, with a rich spectrum of environmental variations, offer insights into relationships between organisms and environments that expand understanding of these phenomena and enlarge our sense of what is possible or probable as we look to the future.

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“…Bipinnate to tripinnate forms (e.g., Mesodescolea, Ticoa) appear by the Jurassic to Cretaceous (e.g., Gee 1989; Artabe and Archangelsky 1992;Rees 1993;Artabe and Stevenson 1999). Simple leaves of the Taeniopteris type that have been attributed to Cycadales (e.g., Bjuvia, Doratophyllum, Glandulataenia, Lepingia, some Macrotaeniopteris, Sueria, some Taeniopteris,Yixianophyllum) occur from the Permian to Cretaceous (e.g., Harris 1932;Florin 1933;Mamay 1976;Gillespie and Pfefferkorn 1986;Gao and Thomas 1989b;Pant 1990;Artabe 1994;Liu and Yao 2002;Ash 2005;Zheng et al 2005). However, at least one of the Permian forms is now considered unlikely to be cycadalean (Axsmith et al 2003), and only the Cretaceous taxon Sueria has been demonstrated to have features, such as perforated epidermal cells and accessory cell coronas (Artabe 1994;Artabe and Stevenson 1999), hypothesized to be unique to Cycadales (Hermsen et al 2006, table 1).…”

Section: Discussionmentioning

confidence: 99%