New data on the epidermal structure of the leaves of Podozamites Braun

Nosova, Natalya; Cittert, Johanna H.A. van Konijnenburg‐van; Kiritchkova, A. I.

doi:10.1016/j.revpalbo.2016.11.005

Cited by 14 publications

(3 citation statements)

References 13 publications

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“…Later, Nosova et al . (2017) reassigned this record to Podozamites based on better‐preserved, similar macroremains from Germany and on the similarity of the cuticles to other Podozamites species. The cuticle preservation of the material from Sołtyków, from the coprolites and from fossil leaves preserved within shales and mudstones, is markedly similar: both are cracked in the same way, forming narrow diagonal strips.…”

Section: Methodsmentioning

confidence: 99%

Early Jurassic coprolites: insights into palaeobotany and the feeding behaviour of dinosaurs

Barbacka

Górecki

Pacyna

et al. 2022

Papers in Palaeontology

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Analyses of coprolites provide important data on animal feeding and food quality, including information on the taxonomy of the biotope. Knowledge of the diet of extinct animals has implications for our understanding of the evolution of various physiological strategies and feeding adaptations. Here we provide the first description of plant remains preserved in coprolites from early Hettangian deposits at Sołtyk ow (Holy Cross Mountains, Poland). The coprolites probably originated from herbivorous sauropodomorphs, ornithischians and large carnivorous theropods, from which tracks are known from the site. Herbivorous coprolite producers fed on the flora growing on a fluvial plain, and the cuticles that remain in the coprolites originated from crowns of gymnospermous trees or shrubs. Coprolites assigned to large predators contained more diverse plant remains, although they also belonged to the gymnosperms. These were probably ingested together with the

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Section: Methodsmentioning

confidence: 99%

Early Jurassic coprolites: insights into palaeobotany and the feeding behaviour of dinosaurs

Barbacka

Górecki

Pacyna

et al. 2022

Papers in Palaeontology

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“…Among conifers, Podozamites leaves are easily distinguished by their mostly transversely oriented, paracytic stomata arranged in longitudinal files (e.g. Harris 1979;Nosova et al 2017;Shi et al 2018). Finally, one conifer leaf that is especially likely to be confused with Sphenobaiera insecta is Heidiphyllum elongatum (Morris) Retallack -one of the most widespread and abundant leaf species in the Gondwanan Triassic (2200303;Retallack 1977Retallack , 1980Anderson and Anderson 1989).…”

Section: Discrimination Of Sphenobaiera Florin Emend Nov From Similar...mentioning

confidence: 99%

Sphenobaiera insecta from the Upper Triassic of South Australia, with a clarification of the genus Sphenobaiera (fossil Ginkgophyta) and its delimitation from similar foliage genera

et al. 2022

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Upper Triassic deposits of the Leigh Creek Coal Measures in South Australia yield exquisitely preserved plant fossils of a typical mid-to high-latitude Gondwanan flora. Here, we present a detailed cuticular analysis of the ginkgoalean leaf Sphenobaiera insecta J.M. Anderson et H.M. Anderson nov. emend., which is characterized by an unlobed or once-lobed, elliptic to oblanceolate lamina, abundant round to fusiform resin bodies, and absence of interveinal striae. We also propose an emendation to the genus diagnosis so that Sphenobaiera encompasses also unlobed leaves such as most of those attributed to S. insecta. Such leaves may be distinguished from morphologically similar co-occurring leaf taxa, such as Heidiphyllum elongatum (Pinales) and Rochipteris spp. (Petriellales), based on the characteristic resin bodies and sporadic occurrence of vein dichotomies in the central lamina. Sphenobaiera insecta leaves show common evidence of a particular type of herbivory damage along the leaf margin in the form of small (1-1.5-mm-long) semi-circular patches each lined by a crescent-shaped, darkened reaction rim.

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“…Anderson and Anderson [73] noted that Heidiphyllum may be associated with both Telemachus (probable conifer) and Dordrechtites (possible corystosperm). Podozamites and Heidiphyllum leaves both have a large number of parallel veins, e.g., [33,46,62,63,74], but stomata of some Heidiphyllum leaves are longitudinally oriented, with 5-6 subsidiary cells, and papillae around the stomatal pits [73]. Paracytic stomata are not present in Heidiphyllum and the leaves were likely borne spirally on short shoots [46].…”

Section: Phylogenetic Relationships Of the Krassilovia-podozamites Plantmentioning

confidence: 99%

Reconstructing Krassilovia mongolica supports recognition of a new and unusual group of Mesozoic conifers

Herrera¹,

Shi

Mays

et al. 2020

PLoS ONE

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Previously unrecognized anatomical features of the cone scales of the enigmatic Early Cretaceous conifer Krassilovia mongolica include the presence of transversely oriented paracytic stomata, which is unusual for all other extinct and extant conifers. Identical stomata are present on co-occurring broad, linear, multiveined leaves assigned to Podozamites harrisii, providing evidence that K. mongolica and P. harrisii are the seed cones and leaves of the same extinct plant. Phylogenetic analyses of the relationships of the reconstructed Krassilovia plant place it in an informal clade that we name the Krassilovia Clade, which also includes Swedenborgia cryptomerioides-Podozamites schenkii, and Cycadocarpidium erdmanni-Podozamites schenkii. All three of these plants have linear leaves that are relatively broad compared to most living conifers, and that are also multiveined with transversely oriented paracytic stomata. We propose that these may be general features of the Krassilovia Clade. Paracytic stomata, and other features of this new group, recall features of extant and fossil Gnetales, raising questions about the phylogenetic homogeneity of the conifer clade similar to those raised by phylogenetic analyses of molecular data.

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New data on the epidermal structure of the leaves of Podozamites Braun

Cited by 14 publications

References 13 publications

Early Jurassic coprolites: insights into palaeobotany and the feeding behaviour of dinosaurs

Early Jurassic coprolites: insights into palaeobotany and the feeding behaviour of dinosaurs

Sphenobaiera insecta from the Upper Triassic of South Australia, with a clarification of the genus Sphenobaiera (fossil Ginkgophyta) and its delimitation from similar foliage genera

Reconstructing Krassilovia mongolica supports recognition of a new and unusual group of Mesozoic conifers

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