Tempskya in the Valanginian of South America (Mulichinco Formation, Neuquén Basin, Argentina) — Systematics, palaeoclimatology and palaeoecology

Martínez, Leandro Carlos Alcides; Olivo, Mariana Soledad

doi:10.1016/j.revpalbo.2015.04.002

Cited by 12 publications

(8 citation statements)

References 64 publications

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“…In addition, the latter species has root traces with purely sclerenchymatous cortical tissues. Tempskyaceae Read et Brown ex Martínez, an enigmatic Cretaceous family of ferns with false trunks composed of multiple stems and petiole bases, surrounded by adventitious roots, has been recently allied to the Cyatheales (Martínez and Olivo, 2015). The structure of these false trunks, as well as the presence of solenostelic stems within these trunks, and monostelic petiole bases, clearly separate this taxon from the studied specimens.…”

Section: Systematic Paleontologymentioning

confidence: 78%

“…However, given that some of them are empty, or have different sizes/number of cells in their annuli, the description here is first Table 2 Comparison between Cyatheales indet. and fossil Cyatheales stems (Modified from Vera and Herbst, 2015, with data also taken from Martínez and Olivo, 2015). based on the sporangia attached to the indusiate pinnule.…”

Section: Isolated Sori and Sporangiamentioning

confidence: 99%

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Further evidence supporting high diversity of cyathealean tree ferns in the Early Cretaceous of Antarctica

Vera

2015

Cretaceous Research

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Section: Systematic Paleontologymentioning

confidence: 78%

Section: Isolated Sori and Sporangiamentioning

confidence: 99%

Further evidence supporting high diversity of cyathealean tree ferns in the Early Cretaceous of Antarctica

Vera

2015

Cretaceous Research

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“…Due to the unique morphology of this false trunk, Tempskya represents an extinct monotypic family Tempskyaceae Read & Brown ex L.C.A. Martínez, 2015.…”

mentioning

confidence: 99%

“…However, the systematic affinity of the family has remained unclear to date because of the lack of attached leaves and reproductive organs (Tidwell & Ash 1994). Recently, Martínez & Olivo (2015) emended the Tempskyaceae family based on exceptionally well-preserved silicified false trunks, which included possible frond segments and attached sori with sporangia containing spores. The characters of these reproductive remains allowed the authors to attribute this family to the Cyatheales.…”

mentioning

confidence: 99%

“…The genus Tempskya has been recorded exclusively in Cretaceous deposits from the Valanginian (Barale & Viera 1989; Martínez & Olivo 2015) to the Santonian (Nishida 1986). Records of Tempskya are found in both Lower and Upper Cretaceous deposits from the Laurasia domain, including North America, but the genus has also been reported from the Lower Cretaceous of Argentina and Australia within the Gondwana realm (see Section 2.4).…”

mentioning

confidence: 99%

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The extinct tree fern Tempskya Corda from the Albian of Spain: palaeophytogeographical and palaeoenvironmental implications

Sender

Nishida

Diez

2017

Earth and Environmental Science Transactions of the Royal Socie

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New evidence of the extinct tree fern of the genus Tempskya Corda from Albian deposits in western Eurasia (northeastern Spain) is presented. These plant fossil remains consist of several silicified false trunks measuring up to 1.20m long, some of which still preserve the apex. Rhizomes and petioles are more abundant in the apical zone of the false trunk. Some false trunks preserve charcoalified tissues that can be interpreted as evidence that palaeo-wildfires affected the false trunks several times from mostly the same direction. Sedimentological evidence suggests that the fern habitat was close to coastal, tidally influenced environments. These new fossils from the Albian of Spain fill the chronological and distributional gap of Tempskya that existed in Eurasia during the Early Cretaceous. Temporal and spatial changes in Tempskya distributions are proposed on several palaeogeographical maps.

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A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment

Martínez,

Leppe,

Manríquez

et al. 2023

Papers in Palaeontology

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Fossil plants, including large trunks, stems, some branches, and twigs, were collected from the Maastrichtian (68.9 Ma), upper Dorotea Formation in the Magallanes–Austral Basin, 16 km north of the Cerro Guido–Las Chinas complex in the southern Chilean Magallanes region. These fossil trunks range from 0.2 to 2.2 m in length. Petrographic slides were made in three sections (transverse, radial and tangential) and analysed under a light microscope to study the permineralized fossils. The woods and stems belong to Austroginkgoxylon gen. et sp. nov., Agathoxylon antarcticum, Podocarpoxylon paradoxi sp. nov., Podocarpoxylon mazzonii, Palmoxylon subantarcticae and Notomalvaceoxylon magallanense gen. et sp. nov. The growth rings of gymnosperms and anatomical characters of angiosperms were analysed to obtain palaeoecological data. Interactions between gymnosperm roots growing into the secondary xylem of an angiosperm (nurse logs) are recorded. The data obtained from the fossil woods suggest warm and humid conditions in this southern South American locality during the Late Cretaceous, providing a unique opportunity to study continental environments at high southern latitudes, which are poorly represented on a global scale.

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Tempskya in the Valanginian of South America (Mulichinco Formation, Neuquén Basin, Argentina) — Systematics, palaeoclimatology and palaeoecology

Cited by 12 publications

References 64 publications

Further evidence supporting high diversity of cyathealean tree ferns in the Early Cretaceous of Antarctica

Further evidence supporting high diversity of cyathealean tree ferns in the Early Cretaceous of Antarctica

The extinct tree fern Tempskya Corda from the Albian of Spain: palaeophytogeographical and palaeoenvironmental implications

A unique Late Cretaceous fossil wood assemblage from Chilean Patagonia provides clues to a high‐latitude continental environment

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