The fern Konijnenburgia alata in the mid-Cretaceous of Patagonia, and the Matoniaceae fossil record

Passalia, Mauro Gabriel; Iglesias, Ari; Varela, Augusto Nicolás; Santamarina, Patricio Emmanuel; Poiré, Daniel Gustavo; Richiano, Sebastián

doi:10.1016/j.cretres.2018.03.026

Cited by 5 publications

(2 citation statements)

References 65 publications

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“…G. unicyclica shows sori with a regular number of seven-eight sporangia forming a single ring disposed around a central insertion zone, further resembling the soral morphology of Matoniaceae. In Matoniaceae, the sporangia are closely arranged in one (occasionally two or four) concentric rows around a central area named receptacle or placenta ( Skog and Litwin 1995 ; Klavins et al ., 2004 ), which is vascularized by multiple veins and is often delineated by a well-defined outline ( Ash, 1972 ; Kato & Iwatsuki, 1985 ; Passalia et al ., 2018 ). Likewise, it has been suggested that the receptacle is probably homologous to the indusia, described for some extinct genera within Matoniaceae ( Skog and Litwin, 1995 ; Klavins et al ., 2004 ).…”

Section: Discussionmentioning

confidence: 99%

Fertile Goeppertella from the Jurassic of Patagonia: mosaic evolution in the Dipteridaceae-Matoniaceae lineage

2023

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Background and Aims Goeppertella has been postulated as a monophyletic group, whose precise position within the Gleichenoid families Dipteriaceae and Matoniaceae, remains poorly understood. Previously described Goeppertella specimens are based on frond fragments and its fertile morphology is represented by a few, poorly preserved specimens. We describe a new species based on the largest collection of fertile specimens known to date, and discuss the evolutionary history of the genus based on the additional reproductive characters provided by the fossils described. Methods Plant impressions were collected in Early Jurassic sediments of Patagonia, Argentina. The specimens were described, and silicone rubber casts were developed to examine in detail vegetative and reproductive features. The new species was compared with other Goeppertella species. Finally, a backbone analysis was performed in the context of a previously published combined matrix of Dipteridaceae, using the maximum parsimony criterion. Key Results The new species is described based on a combination of features that have not been previously reported. The vegetative morphology shows affinities with most fossil and extant Dipteriaceae, contrasting with the reproductive morphology which is more comparable with the scarce number of fossil dipteridaceous forms and it is more spread in the sister family, Matoniaceae. The backbone analysis indicates that the position of the new species vary among different positions among Dipteridaceae and Matoniaceae. Additional analyses, discriminating the signal of reproductive and vegetative character, are provided to discuss the base of this uncertainty. Conclusions We consider Goeppertella as a member of the family Dipteridaceae since we interpret most shared features with Matoniaceae as plesiomorphic conditions for the family. In contrast, most shared features with Dipteridaceae represent apomorphies for the group. Thus, Goeppertella would represent an early diverging genus in Dipteridaceae, considering the venation characters as the most important in order to define the family.

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Section: Discussionmentioning

confidence: 99%

Fertile Goeppertella from the Jurassic of Patagonia: mosaic evolution in the Dipteridaceae-Matoniaceae lineage

2023

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“…For example, the ferns of the Family Matoniaceae (represented in this assemblage by both form-genera Dictyophyllidites and Matonisporites ) currently inhabit the mountain slopes in the Malaysian Archipelago and present cuticles that make them resistant to differences of temperature during the day [ 89 , 90 ]. Nevertheless, the distribution of this family of ferns during the Mesozoic was wider and its possible habitats were more diverse [ 90 ]. It is also the case of the ferns of the family Gleicheniaceae, represented in the Lastres Fm.…”

Section: Discussionmentioning

confidence: 99%

Jurassic Palynology from “The Dinosaur Coast” of Asturias (Lastres Fm., Northwestern Spain): Palynostratigraphical and Palaeoecological Insights

Santos

Piñuela

Rodríguez-Barreiro

et al. 2022

Biology

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Abundant fossils of vertebrates (mainly footprints and bones of dinosaurs) and numerous invertebrates occur in the Upper Jurassic deposits of the Lastres Formation in the Asturias region, North of Spain. However, no palynological study has been published from this geological formation; therefore, much palaeoenvironmental and palaeoecological information is still unknown. In this study, a total of 62 morphospecies, belonging to 49 different morphogenera were identified, including pollen, spores, algae remains, fungi spores, dinoflagellates, foraminifera, and scolecodonts from four different locations on the Asturian coast. Spores are the dominant group of palynomorphs, both in diversity and abundance, contrasting with the minor diversity of pollen grains. The age of some key taxa indicates that the palynological assemblage cannot be older than the Kimmeridgian, suggesting a Kimmeridgian-Tithonian age. The botanical and environmental affinities of the pollen and spores indicate the presence of different plant assemblages, including plant communities from humid areas such as the margin of rivers and small freshwater ponds that were dominated by bryophytes and ferns, and a coastal plant community that would inhabit arid areas and would be dominated by gymnosperms and some pteridophytes. The SEM analyses of wood remains show the abundance of charcoalified remains suggesting that wildfires were usual in The Dinosaur Coast of Asturias during the Kimmeridgian.

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A fossorial petalurid trace fossil from the Albian of Patagonia

Genise

Sánchez

Poiré

et al. 2020

Cretaceous Research

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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The fern Konijnenburgia alata in the mid-Cretaceous of Patagonia, and the Matoniaceae fossil record

Cited by 5 publications

References 65 publications

Fertile Goeppertella from the Jurassic of Patagonia: mosaic evolution in the Dipteridaceae-Matoniaceae lineage

Fertile Goeppertella from the Jurassic of Patagonia: mosaic evolution in the Dipteridaceae-Matoniaceae lineage

Jurassic Palynology from “The Dinosaur Coast” of Asturias (Lastres Fm., Northwestern Spain): Palynostratigraphical and Palaeoecological Insights

A fossorial petalurid trace fossil from the Albian of Patagonia

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