A Middle Triassic macroflora from southwestern Gondwana (Mendoza, Argentina) with typical Northern Hemisphere elements: Biostratigraphic, palaeogeographic and palaeoenvironmental implications

Cariglino, Bárbara; Monti, Mariana; Zavattieri, Ana Marı́a

doi:10.1016/j.revpalbo.2018.06.004

Cited by 27 publications

(25 citation statements)

References 48 publications

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“…Epicuticular wax has been defined as a xeromorphic trait (Hill, 1998;Haworth & McElwain, 2008). The waxy layer creates a barrier that prevents water loss-a trait that has been suggested by studies as favorable under arid conditions when water availability is low (Watson & Alvin, 1996;Roth-Nebelsick et al, 2013;Cariglino et al, 2018, to name a few). The EA subclades of disjuncts 2 and 3 have epicuticular waxes, whereas they are absent in their NA counterparts (Figs.…”

Section: Divergence In Ecological Niche and Morphology In Intercontinmentioning

confidence: 99%

Phylogenomics, biogeography, and evolution of the blue‐ or white‐fruited dogwoods (Cornus)—Insights into morphological and ecological niche divergence following intercontinental geographic isolation

Lindelof

Lindo

Zhou

et al. 2020

J of Sytematics Evolution

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The eastern Asian (EA)–eastern North American (ENA) floristic disjunction represents a major pattern of phytogeography of the Northern Hemisphere. Despite 20 years of studies dedicated to identification of taxa that display this disjunct pattern, its origin and evolution remain an open question, especially regarding post‐isolation evolution. The blue‐ or white‐fruited dogwoods (BW) are the most species‐rich among the four major clades of Cornus L., consisting of ~35 species divided into three subgenera (subg. Yinquania, subg. Mesomora, and subg. Kraniopsis). The BW group provides an excellent example of the EA–ENA floristic disjunction for biogeographic study due to its diversity distribution centered in eastern Asia and eastern North America, yet its species relationships and delineation have remained poorly understood. In this study, we combined genome‐wide markers from RAD‐seq, morphology, fossils, and climate data to understand species relationships, biogeographic history, and ecological niche and morphological evolution. Our phylogenomic analyses with RAxML and MrBayes recovered a strongly supported and well‐resolved phylogeny of the BW group with three intercontinental disjunct clades in EA and ENA or Eurasia and North America, of which two are newly identified within subg. Kraniopsis. These analyses also recovered a potential new species but failed to resolve relationships within the C. hemsleyi–C. schindleri complex. In an effort to develop an approach to reduce computation time, analysis of different nodal age settings in treePL suggests setting a node's minimum age constraint to the lower bound of a fossil's age range to obtain similar ages to that of BEAST. Divergence time analyses with BEAST and treePL dated the BW stem back to the very Late Cretaceous and the divergence of the three subgenera in the Paleogene. By integrating fossil ages and morphology, a total evidence‐based dating approach was used in conjunction with time‐slice probabilities of dispersal under a DEC model to resolve ancestral ranges of each disjunct in the Miocene: Eurasia and ENA (disjunct 1), EA and western North America (disjunct 2), and EA (disjunct 3). The dated biogeographic history supports dispersal via the North Atlantic Land Bridge in the late Paleogene in disjunct 1 and dispersal via the Bering Land Bridge in the Miocene for disjuncts 2 and 3. Character mapping with a stochastic model in phytools and comparison of ecological niche, morphospace, and rate of evolution indicated differential divergence patterns in morphology, ecological niche, and molecules between disjunct sisters. Although morphological stasis was observed in most of the characters, evolutionary changes in growth habit and some features of leaf, flower, and fruit morphology occurred in one or both sister clades. A significant differentiation of ecological habitats in temperature, precipitation, and elevation between disjunct sisters was observed, suggesting a role of niche divergence in morphological evolution post‐isolation. The patterns of evolutionary rate between morphology and molecules varied among disjunct clades and were not always congruent between morphology and molecules, suggesting cases of non‐neutral morphological evolution driven by ecological selection. Our phylogenetic evidence and comparisons of evolutionary rate among disjunct lineages lend new insights into the formation of the diversity anomaly between EA and ENA, with particular support of an early diversification in EA. These findings, in conjunction with previous studies, again suggest that the EA–ENA disjunct floras are an assembly of lineages descended from the Mesophytic Forests that evolved from the early Paleogene “boreotropical flora” through varied evolutionary pathways across lineages.

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Section: Divergence In Ecological Niche and Morphology In Intercontinmentioning

confidence: 99%

Phylogenomics, biogeography, and evolution of the blue‐ or white‐fruited dogwoods (Cornus)—Insights into morphological and ecological niche divergence following intercontinental geographic isolation

Lindelof

Lindo

Zhou

et al. 2020

J of Sytematics Evolution

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“…L. kirchneri Bauer et al (2015) has a prominent apical process that in the studied specimens do not or were not preserved (Kustatscher et al, 2015). Cariglino et al (2018) described specimens referred to Lepacyclotes sp. for the Quebrada de los Fósiles Formation.…”

Section: Plate I a And Bmentioning

confidence: 83%

“…Sporophylls assigned to the genus Lepacyclotes (Isoetales) have paleobiogeographical importance, because they have a Laurassic affinity (Kustatscher et al, 2010(Kustatscher et al, , 2015. In Argentina, they have been registered only in the Quebrada de los Fósiles Formation of the Puesto Viejo Group (San Rafael depocenter, Mendoza Province) and are dated as Middle Triassic (Ottone et al, 2014;Coturel et al, 2016;Cariglino et al, 2018). The presence of Lepacyclotes in the Monina Formation extends its record to the Cuyana Basin, increasing the distribution of this taxon.…”

Section: Paleogeographic and Biostratigraphic Considerationsmentioning

confidence: 99%

A new paleofloristic assemblage from the Cuyana Basin (Agua de los Pajaritos depocenter), Argentina and its paleobiogeographic and paleoenvironmental implications

Drovandi

Correa

Bodnar

et al. 2020

Journal of South American Earth Sciences

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The paleoflora includes representatives of Isoetales, Peltaspermales, and Coniferales in addition to some unidentified taxa classified as incertae sedis. The species determined, described, and compared were: Lepacyclotes sp.; Matatiella cf. roseta, Anderson and Ander-son2003; Scytophyllum sp.; Cf. Rissikianthus; Protocircoporoxylon sp.; Cordaicarpus sp.; and Acevedoa cf. rastroensis (Arce and Lutz) Arce and Lutz 2014. In addition, a model is proposed to determine paleofloristic associations as well as reconstruction of the paleoenvironment based on the depositional architecture and the preservational mode of the paleofloristic remains.

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“…Rhyolitic pyroclastic flow deposits, andesitic lavas, basaltic intrusives and volcaniclastic facies reveal intense volcanism coeval with the deposition of the Quebrada de los Fósiles Formation (QdlF Fm), lower unit of the Puesto Viejo Group, San Rafael Block, Mendoza Province (Monti, 2015;Monti & Franzese, 2016. Sedimentological data suggest that the vegetation recorded from this unit grew in fluvial systems while profuse volcanic activity introduced large volumes of ash and the emission of large amounts of greenhouse (thermogenic) gases into the atmosphere (Spalletti et al, 2003;Monti & Franzese, 2016Spalletti & Limarino, 2017;Cariglino et al, 2018;Zavattieri et al, 2020) which had consequent effects on climate (resulting in generalized regional aridity) and paleoenvironments that directly influenced the development of plant communities.…”

mentioning

confidence: 98%

Evidences of Teratology and Mutagenensis in Palynological Assemblages from the Middle Triassic Puesto Viejo Group, San Rafael Depocenter, Argentina. Implications of Volcanism and Regional Environmental Stress

Zabattieri

Gutiérrez

2023

Ameghiniana

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A Middle Triassic macroflora from southwestern Gondwana (Mendoza, Argentina) with typical Northern Hemisphere elements: Biostratigraphic, palaeogeographic and palaeoenvironmental implications

Cited by 27 publications

References 48 publications

Phylogenomics, biogeography, and evolution of the blue‐ or white‐fruited dogwoods (Cornus)—Insights into morphological and ecological niche divergence following intercontinental geographic isolation

Phylogenomics, biogeography, and evolution of the blue‐ or white‐fruited dogwoods (Cornus)—Insights into morphological and ecological niche divergence following intercontinental geographic isolation

A new paleofloristic assemblage from the Cuyana Basin (Agua de los Pajaritos depocenter), Argentina and its paleobiogeographic and paleoenvironmental implications

Evidences of Teratology and Mutagenensis in Palynological Assemblages from the Middle Triassic Puesto Viejo Group, San Rafael Depocenter, Argentina. Implications of Volcanism and Regional Environmental Stress

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