A new Bennettitalean genus from the Middle Jurassic of the Mikhailovskii Rudnik locality (Kursk Region, Russia)

Gordenko, N. V.; Broushkin, A. V.

doi:10.1134/s0031030110100072

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…Finally, encryption of stomata in deep abaxial trichome‐filled grooves or chambers occurred in various extinct plant groups (e.g., noeggerathiopsid and rufloriacean cordaitaleans, Dicranophyllales, williamsoniacean Bennettitales and high‐latitude cheirolepidacean conifers) that characterized humid and even peat‐forming environments in the late Paleozoic and Mesozoic (e.g., Meyen, 1963; Alvin, 1982; Meyen and Smoller, 1986; McLoughlin and Drinnan, 1996; Villar de Seoane, 2001; Gordenko and Broushkin, 2010; Tosolini et al, 2014). Although clearly not subject to genuinely arid climates, these plants may have experienced high levels of water stress due to growth in areas of sustained winds or on acidic or low‐nutrient substrates, especially under locally seasonal climates (Haworth and McElwain, 2008; Pott et al, 2008; Pott and McLoughlin, 2009).…”

Section: Discussionmentioning

confidence: 99%

Early evidence of xeromorphy in angiosperms: Stomatal encryption in a new eocene species ofBanksia(Proteaceae) from Western Australia

Carpenter

McLoughlin

Hill

et al. 2014

American J of Botany

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Section: Discussionmentioning

confidence: 99%

Early evidence of xeromorphy in angiosperms: Stomatal encryption in a new eocene species ofBanksia(Proteaceae) from Western Australia

Carpenter

McLoughlin

Hill

et al. 2014

American J of Botany

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“…from the Middle Jurassic of Yorkshire, U.K. (Cleal & Rees 2003, Cleal et al 2006, Pott et al 2007, Zhao et al 2018, appears to lack trichomes or trichome bases, but these are very common among other Nilssoniopteris species (see Na et al 2014, Ray et al 2014 as well as in other genera of bennettitalean leaves (e.g. Sincock & Watson 1988, Watson & Sincock 1992, Boyd 2000, Gordenko & Broushkin 2010, Pott et al 2012. The trichome bases are typically one-or two-celled (rarely three-celled or more) and may be very sparse or abundant, and all appear very similar in morphology at high magnification under SEM (e.g.…”

Section: Palaeoecological Considerationsmentioning

confidence: 99%

Exceptionally well-preserved Early Cretaceous leaves of Nilssoniopteris from central Mongolia

Herrera

Shi

Tsolmon

et al. 2018

Acta Palaeobotanica

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Two new Early Cretaceous (Aptian-Albian) species of fossil bennettitalean leaves are described from central Mongolia and assigned to the genus Nilssoniopteris. Nilssoniopteris tomentosa F.Herrera, G.Shi, Tsolmon, Ichinnorov, Takahashi, P.R.Crane, et Herend. sp. nov., isolated from bulk sediment samples collected for mesofossils in the Tevshiingovi Formation at the Tevshiin Govi opencast coal mine, is distinctive in having a dense, well-developed indumentum composed of branched, flattened multicellular trichomes on the abaxial leaf surface. This species provides the first direct evidence of complex multicellular trichomes in Bennettitales and adds to the evidence of leaf anatomical features in the group that were probably advantageous in increasing water use efficiency and/or perhaps had other functions such as deterring insect herbivory. Comparison with other well-preserved leaves of Bennettitales, including Nilssoniopteris shiveeovoensis F.Herrera, G.Shi, Tsolmon, Ichinnorov, Takahashi, P.R.Crane, et Herend. sp. nov., collected as hand specimens from the Khukhteeg Formation at the Shivee Ovoo locality, suggests that the trichome bases seen commonly on the abaxial cuticle of bennettitalean leaves bore trichomes with very low fossilization potential. In some cases these trichomes may have been shed as the leaves matured, but in other cases they probably decayed during diagenesis or were destroyed during the standard processes by which fossil leaf cuticles are prepared.

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“…Sympterophyllum is described as having what appear to be fused segments of lamina. The description of S. sympinnatum does not indicate that the adaxial surface is corrugated, but the leaf is reconstructed with each segment being adaxially convex, producing a corrugated configuration (Gordenko and Broushkin, 2010, fig. 1).…”

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confidence: 99%

“…As the result of the typically disarticulated nature of plant remains in the fossil record we do not yet have evidence for predicting to which, if either, of the seed cones N. corrugata belongs. Nevertheless, the distribution of the genus Nillsoniopteris in the fossil record reveals that plants with leaves of this type had extremely wide global diversity (i.e., 50 species) throughout the Mesozoic (Table 1; Taylor et al, Gordenko andBroushkin, 2010 2009). Because more than one species of bennettitalean remains characterize a large percentage of fossil plant assemblages that are preserved throughout their geologic range (e.g., references in Table 1), it is clear that bennettitalean plants were a major component of global vegetation for nearly 180 million years.…”

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Anatomically Preserved Early Cretaceous Bennettitalean Leaves: Nilssoniopteris corrugata n. sp. from Vancouver Island, Canada

2014

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Early Cretaceous fossilized leaves assignable to the extinct seed plant order Bennettitales occur within an exceptionally diverse Early Cretaceous (Valanginian) flora of anatomically preserved plant fossils at Apple Bay on Vancouver Island, British Columbia, Canada. One of the bennettitalean leaf types has an entire margin, with laminae that are attached near the adaxial surface of the midvein. Leaves are 10–15 mm wide with an adaxial surface that shows distinct corrugations, and a midrib that is exposed adaxially. The vascular system of the midrib consists of a crescent-shaped ring of collateral bundles. Lateral veins diverge from midrib at ∼90°, are typically simple but occasionally branch at base of the lamina. Vein density is 12–15 per cm. Leaves are hypostomatic with syndetocheilic stomata that are randomly oriented between veins. Internal anatomy consists of an adaxial hypodermis of closely-spaced isodiametric cells, mesophyll that is differentiated into adaxial palisade and abaxial spongy zones, and collateral bundles that show a distinct bundle sheath with bundle sheath extensions. This novel combination of characters represents the diverse bennettitalean genus Nilssoniopteris. Nilssoniopteris corrugata new species is only the second species of the genus for which internal anatomy is preserved. This species increases the known variation of bennettitalean leaf anatomy, and reinforces our appreciation for the global distribution of bennettitalean seed plants during the Mesozoic.

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A new Bennettitalean genus from the Middle Jurassic of the Mikhailovskii Rudnik locality (Kursk Region, Russia)

Cited by 7 publications

References 4 publications

Early evidence of xeromorphy in angiosperms: Stomatal encryption in a new eocene species ofBanksia(Proteaceae) from Western Australia

Early evidence of xeromorphy in angiosperms: Stomatal encryption in a new eocene species ofBanksia(Proteaceae) from Western Australia

Exceptionally well-preserved Early Cretaceous leaves of Nilssoniopteris from central Mongolia

Anatomically Preserved Early Cretaceous Bennettitalean Leaves: Nilssoniopteris corrugata n. sp. from Vancouver Island, Canada

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