Lithraea australis (Berry) comb. nov. (Anacardiaceae) from the upper section of Ñirihuau Formation (middle Miocene), Patagonia

Passalia, Mauro Gabriel; Caviglia, Nicolás; Vera, Ezequiel Ignacio

doi:10.1016/j.revpalbo.2019.04.003

Cited by 7 publications

(2 citation statements)

References 30 publications

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“…In Patagonia, Argentina, fossil leaves/leaflets from the middle Miocene were identified as Lithrea, which is extant and endemic to South America. The identification was possible because of leaf architectural features, such as craspedodromous secondary venation, several secondary veins (some of them forming exmedial branching), parallel intersecondaries, and acute cuneate to decurrent base (Passalia et al 2019).…”

Section: Paleobotanymentioning

confidence: 99%

Neotropical Anacardiaceae (cashew family)

et al. 2022

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Anacardiaceae is an ecologically and economically important plant family of about 200 species in 32 genera in the Neotropics. The family is particularly diverse in leaf architecture and fruit morphology, making it a model family to study the evolution of structural diversity as it correlates with lineage diversification. This fruit diversity is the primary reason 11 of the Neotropical genera are monotypic and that so many genera are recognized in the Anacardiaceae. The economic value of the family is driven by the global markets for cashews, mangoes, and pistachios, but there is great potential value in its medicinal properties. At least 10 Neotropical genera cause contact dermatitis, which is a rich area for research in the family. Here presented is a review of the systematics and structural diversity of the family. Particular attention is given to the morphology, economic botany, paleobotany, ecology, and taxonomy of native and naturalized genera. Keys to Neotropical Anacardiaceae subfamilies and genera are provided along with descriptions of native genera.

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Section: Paleobotanymentioning

confidence: 99%

Neotropical Anacardiaceae (cashew family)

et al. 2022

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“…Anacardiaceous fossil palynomorphs and leaf impressions with affinities to Lithraea Miers., Schinus , and Astronium were recovered in the Miocene Paraná and Ituzaingó formations from northeastern Argentina (Anzótegui, 1990; Anzótegui and Aceñolaza, 2008; Franco et al, 2013). Recently, a fossil leaf type from the middle Miocene of Patagonia was described and assigned to the Anacardiaceae and shows a great similarity to Lithraea molleode s (Vellozo) Engler, 1876 (Passalia et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Astroniumxylon, Schinopsixylon, andParametopioxylonn. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records

et al. 2019

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This paper presents new descriptions of Anacardiaceae fossil woods from the Ituzaingó Formation (late Cenozoic) at the Toma Vieja, Curtiembre, and Arroyo El Espinillo localities, Argentina. We describe eight silicified woods assigned to four different species in three genera, one of which, Parametopioxylon crystalliferum n. gen. n. sp., is new. Similarities between these three genera and the six Anacardiaceae species previously recorded from the late Cenozoic in northeastern Argentina are investigated using multivariate analysis techniques (correspondence and cluster analysis). Our study is based on 33 characters scored for 17 fossil specimens (10 Astroniumxylon Brea, Aceñolaza, and Zucol 2001; five Schinopsixylon Lutz, 1979; and two Parametopioxylon n. gen.) and four extant species (Astronium balansae Engl., Astronium urundeuva Engl., Schinopsis balansae Engl., and Metopium sp.). Our main goal is to determine the wood anatomical features useful for distinguishing among these species. Results of the multivariate analyses support the previous classification where Schinopsixylon is distinguished from Astroniumxylon by having exclusively paratracheal axial parenchyma, ≥30% multiseriate rays, and multiseriate rays that are ≥5 cells wide and commonly 301–400 μm in height. Additionally, we propose that Schinopsixylon heckii Lutz, 1979 is synonymous with S. herbstii Lutz, 1979. A diagnostic key for the fossil species studied is given. Wood anatomy of Anacardiaceae fossil woods from Argentina (late Cenozoic) suggests a warm, dry to semi-humid climate for this region, supporting previous studies.

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The Miocene lacustrine carbonate factory of the Ñirihuau Formation, Ñirihuau Basin, North Patagonian Andes, Argentina

Santonja,

Benavente,

Suriano

et al. 2024

The Depositional Record

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Facies, microfacies and stable isotope analyses of limestone beds in the northernmost Ñirihuau Basin, North Patagonian Andes, Argentina, document and constrain the past hydrological, sedimentological and climate conditions that prevailed during the deposition of a lacustrine system between ca 15 and 13 Ma. This palaeoenvironment is recorded in the middle section of the Ñirihuau Formation, which holds significance because: (1) It was deposited during a transition from an extensional to a compressional tectonic regime; (2) it spans the Middle Miocene Climatic Optimum and the beginning of the Middle Miocene Climatic Transition; and (3) it contains limestone beds interbedded within a 600 m thick interval of mudstones and siltstones, along with intercalated sandstone and volcaniclastic bodies. Two detailed sedimentary logs were surveyed along the Arroyo Las Bayas, at the western and eastern flank of the David Syncline. Limestones from both stratigraphic sections were sampled as well as isolated limestone beds from two other sites. One facies association was defined and interpreted as a perennial lake associated with a deltaic system and dominated by detrital clastic material. It comprises Facies 1 (Marginal lacustrine) and Facies 2 (Lower delta plain); in both, the presence of grainstones and calcimudstones stands out. Through petrography and cathodoluminescence studies of these continental carbonates, nine microfacies were identified: (a) Intraclastic grainstone, (b) Homogeneous calcimudstone, (c) Silty grainstone, (d) Disrupted micrite, (e) Birds eye micrite, (f) Bioclastic mudstone, (g) Calcimudstone with sparse detrital grains, (h) Fenestral micrite, (i) Stromatolitic boundstone. These indicate mainly bio‐induced subaqueous carbonate precipitation and subordinate deposition by tractive flows with short‐distance transport on a littoral lacustrine environment. Most of these microfacies exhibit very early diagenesis (eogenesis) effects. These features, and the geochemistry results, indicate that they were deposited in a palaeolake system under temperate to warm and humid conditions.

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Lithraea australis (Berry) comb. nov. (Anacardiaceae) from the upper section of Ñirihuau Formation (middle Miocene), Patagonia

Cited by 7 publications

References 30 publications

Neotropical Anacardiaceae (cashew family)

Neotropical Anacardiaceae (cashew family)

Astroniumxylon, Schinopsixylon, andParametopioxylonn. gen. fossil woods from upper Cenozoic of Argentina: taxonomic revision, new taxon and new records

The Miocene lacustrine carbonate factory of the Ñirihuau Formation, Ñirihuau Basin, North Patagonian Andes, Argentina

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