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  1. Article: Plant taphonomy and palaeoecology of Pennsylvanian wetlands from the Erillcastell Basin of the eastern Pyrenees, Catalonia, Spain

    Tosal, Aixa / Pàmies, Joaquim / Martín-Closas, Carles

    Palaeogeography, palaeoclimatology, palaeoecology. 2022 Nov. 01, v. 605

    2022  

    Abstract: The Pennsylvanian flora from the intramontane Erillcastell Basin in the eastern Pyrenees (Catalonia, Spain) is described in a palaeoenvironmental context based on a combined study of sedimentology, plant taphonomy and paleoecology. This basin differs ... ...

    Abstract The Pennsylvanian flora from the intramontane Erillcastell Basin in the eastern Pyrenees (Catalonia, Spain) is described in a palaeoenvironmental context based on a combined study of sedimentology, plant taphonomy and paleoecology. This basin differs from other Pyrenean basins of this age in comprising a wide array of fluvial channel and floodplain-related facies, with a limited development of peat mire facies. Both late Moscovian and early Ghzelian successions are rich in diverse calamitalean remains (mainly Calamites cistii and C. suckowii, in addition to C. undulatus in the Moscovian) and pecopterid foliage (mainly Polymorphopteris polymorpha) corresponding to marattialean tree ferns. An unusual feature of the fluvial channel assemblages is the common occurrence of arborescent lycopsids, especially Sigillaria brardii, in association with Calamites species, which presumably occupied riparian niches. Palaeotopographic, drainage and climatic constraints of the Erillcastell Basin may explain this unusual ecological distribution of Sigillaria brardii, which is mostly associated with peat mires and oxbow lakes in other coeval intramontane South European basins. Findings improve knowledge of intermontane forest ecosystems during the Middle to Late Pennsylvanian transition.
    Keywords Late Pennsylvanian epoch ; Moscovian age ; basins ; drainage ; flora ; forests ; leaves ; palaeogeography ; paleoclimatology ; paleoecology ; peat ; trees ; Spain
    Language English
    Dates of publication 2022-1101
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 417718-6
    ISSN 0031-0182
    ISSN 0031-0182
    DOI 10.1016/j.palaeo.2022.111234
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Palaeoenvironmental reconstruction of the late Miocene macroflora of La Bisbal d'Empordà (Catalonia, Spain). Comparison with small mammals

    Tosal, Aixa / Coward, Sophie Roselyn / Casanovas-Vilar, Isaac / Martín-Closas, Carles

    Review of palaeobotany and palynology. 2022 Feb., v. 297

    2022  

    Abstract: The late Miocene flora from La Bisbal d'Empordà (Catalonia, Spain) provides significant data for characterising the coastal vegetation from the north-eastern Iberian Peninsula during a key period in Neogene climatic evolution. To this end, a historical ... ...

    Abstract The late Miocene flora from La Bisbal d'Empordà (Catalonia, Spain) provides significant data for characterising the coastal vegetation from the north-eastern Iberian Peninsula during a key period in Neogene climatic evolution. To this end, a historical leaf collection from La Bisbal d'Empordà was re-examined, analysed from a palaeoenvironmental viewpoint and compared with data provided by the associated small mammal fauna. This flora dates from 9.6–9.7 Ma in age (early Tortonian) according to small mammal biostratigraphy.The fossil-bearing beds were deposited in the floodplain of a meandering river system. Three palaeoecological assemblages were recognized: 1) Helophytic plant stems related to a wetland community. 2) Torn leaves of Fraxinus sp., Ulmus sp., Zelkova sp., Cedrelospermum sp. Populus balsamoides, Alnus gaudinii, Carpinus sp., Platanus sp., Acer tricuspidatum, Daphnogene sp. and, Laurophyllum sp. which would have belonged to a riparian forest located beyond the wetland community, with Fraxinus being the plant growing in closest proximity; 3) Isolated complete Paliurus seeds, interpreted as mainly wind-transported, which provide evidence of an open and more arid landscape situated distally from the floodplain. The small mammal assemblages associated with this flora are consistent with this palaeoenvironmental interpretation. The paucity of small arboreal mammal taxa and insectivores suggests limited forested vegetation areas, while the more common terrestrial species indicate better developed open landscapes. Our results show a more heterogeneous environment than previously thought and that the riverine processes impinged the flora, somewhat limiting the climatic conclusions that might be derived from leaf physiognomic analyses such as CLAMP.
    Keywords Acer ; Alnus ; Carpinus ; Fraxinus ; Miocene epoch ; Paliurus ; Platanus ; Populus ; Ulmus ; Zelkova ; climatology ; fauna ; floodplains ; flora ; landscapes ; leaves ; paleobotany ; paleoecology ; palynology ; riparian areas ; riparian forests ; rivers ; small mammals ; wetlands ; Iberian Peninsula ; Spain
    Language English
    Dates of publication 2022-02
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 0034-6667
    DOI 10.1016/j.revpalbo.2021.104583
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: European charophyte evolution across the Cretaceous–Paleogene boundary

    Vicente, Alba / Csiki-Sava, Zoltán / Martín-Closas, Carles

    Palaeogeography, palaeoclimatology, palaeoecology. 2019 Nov. 01, v. 533

    2019  

    Abstract: The Cretaceous–Paleogene (K/Pg) boundary has traditionally been considered a key moment in charophyte evolution, marked by the extinction of two important Mesozoic families, the Porocharaceae and the Clavatoraceae, and a major turnover within the ... ...

    Abstract The Cretaceous–Paleogene (K/Pg) boundary has traditionally been considered a key moment in charophyte evolution, marked by the extinction of two important Mesozoic families, the Porocharaceae and the Clavatoraceae, and a major turnover within the Characeae. However, new data presented here suggest that one species of the European Porocharaceae (based on gyrogonites) and one species of the Clavatoraceae (based on thalli), persisted into the basal Danian. In addition, a taxonomic revision of the Characeae, coupled with an updated biostratigraphy, shows that this family underwent a step-wise extinction during the latest Cretaceous with only a small number of species becoming extinct at the K/Pg boundary. As a result, changes in charophyte floras around the K/Pg boundary in Europe cannot be considered to represent a major turnover in charophyte evolution. Its effects were more comparable to a normal stage boundary event rather than to a major erathem boundary one. Similar disappearance patterns at the K/Pg boundary have also been recorded in other taxa, including fish and amphibians, showing that aquatic freshwater biotas may somehow be resilient to catastrophic events such as those that occurred during the K/Pg crisis.
    Keywords Characeae ; Cretaceous period ; Danian age ; Porocharaceae ; amphibians ; biostratigraphy ; extinction ; fish ; freshwater ; taxonomic revisions ; thallus ; Europe
    Language English
    Dates of publication 2019-1101
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 417718-6
    ISSN 0031-0182
    ISSN 0031-0182
    DOI 10.1016/j.palaeo.2019.109244
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Filling a gap in the evolution of charophytes during the Turonian to Santonian: Implications for modern physiognomy

    Li, Sha / Wang, Qifei / Zhang, Haichun / Zhang, Yiyi / Wan, Xiaoqiao / Martín-Closas, Carles

    Review of palaeobotany and palynology. 2020 Mar., v. 274

    2020  

    Abstract: The fossil record of Turonian to Santonian charophytes is very poor worldwide, probably due to the limited non-marine records from this age, when there was a global high stand in the relative sea level and, thus, a reduction in non-marine habitats. After ...

    Abstract The fossil record of Turonian to Santonian charophytes is very poor worldwide, probably due to the limited non-marine records from this age, when there was a global high stand in the relative sea level and, thus, a reduction in non-marine habitats. After this gap, the charophyte floras changed to their modern physiognomy, with dominance of the Characeae. Charophytes from the Turonian to Santonian in the Songliao Basin help to fill this significant gap in the evolution of charophytes. The recorded flora is formed by one member of the Clavatoraceae, Atopochara trivolvis var. restricta, and a greater diversity of Characeae, including Nodosochara (Turbochara) heilongjiangensis comb. nov., Lamprothamnium ellipticum, Lychnothamnus barbosai and Lychnothamnus quantouensis comb. nov. These findings showed that the Characeae began to dominate charophyte floras during the global sea level high stand, up to 8 Ma earlier than previously reported. The occurrence of the genus Lychnothamnus in the Turonian in the Songliao Basin represents the oldest record in Eurasia of this still-living genus. The occurrence of A. trivolvis var. restricta in the Turonian to Santonian in China in comparison with its previous records in the Albian?–Cenomanian in Europe indicates that this variety survived as a relict in North China, while the more-derived variety Atopochara trivolvis var. multivolvis had evolved elsewhere. The charophyte flora thrived in large, shallow, permanent freshwater lakes and sometimes in palustrine settings of the Quantou, Qingshankou and Yaojia formations, which explains its higher biodiversity in contrast with the other records that belong mainly to brackish settings.
    Keywords Lamprothamnium ; basins ; biodiversity ; evolution ; flora ; fossils ; freshwater lakes ; habitats ; new combination ; sea level ; China ; Eurasia ; Europe
    Language English
    Dates of publication 2020-03
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 0034-6667
    DOI 10.1016/j.revpalbo.2019.104154
    Database NAL-Catalogue (AGRICOLA)

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  5. Article: Palaeonitella trifurcata n. sp., a cortoid-building charophyte from the Lower Cretaceous of Catalonia

    Martín-Closas, Carles / Segura-Altés, Ricard / Pérez-Cano, Jordi / Bover-Arnal, Telm / Sanjuan, Josep

    Review of palaeobotany and palynology. 2021 Dec., v. 295

    2021  

    Abstract: Palaeonitella trifurcata n. sp. is a minute ecorticate thallus of a charophyte from a non-marine upper Barremian–Lower Aptian section of the Garraf Massif, near Barcelona (Catalonia, Spain). Whorls of trifurcated branchlets built glomerules about 1 mm ... ...

    Abstract Palaeonitella trifurcata n. sp. is a minute ecorticate thallus of a charophyte from a non-marine upper Barremian–Lower Aptian section of the Garraf Massif, near Barcelona (Catalonia, Spain). Whorls of trifurcated branchlets built glomerules about 1 mm across. Small radial branchlets were trifurcated once in three terminal acuminate dactyls. Longer and more robust branches, two per whorl emerge from a basal trifurcation, bore opposite secondary branchlets and ended in three terminal branchlets bearing one oospore. The whole set of characters suggests affinity with Nitella, making of this fossil one of the oldest and unique possible records of thalli of this extant genus.The thallus of P. trifurcata n. sp. was encrusted by a thin micrite film, and additionally, the whorls were coated by a thicker crust while the plant was still alive. It is suggested that this crust was formed upon the periphyton which grew perhaps upon a mucilage covering the whorls and apical heads, as it happens in extant Nitella. After encrustation, a small (ca. 5 mm across) constructive micrite envelope, called a cortoid, was formed attached to the plant, preserving in the inside the thallus articulated and slightly encrusted. Once the plant died, such cortoids accumulated on the lake bottom and were buried and lithified, forming a “cortolite”. This is the first report of constructive micrite envelopes protecting delicate and poorly calcified charophyte thalli from being destroyed.
    Keywords Cretaceous period ; Nitella ; fossils ; lakes ; mucilages ; oospores ; paleobotany ; palynology ; periphyton ; thallus ; Spain
    Language English
    Dates of publication 2021-12
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 0034-6667
    DOI 10.1016/j.revpalbo.2021.104523
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: Montsechia vidalii from the Barremian of Spain, the earliest known submerged aquatic angiosperm, and its systematic relationship to Ceratophyllum

    Gomez, Bernard / Daviero‐Gomez, Véronique / Coiffard, Clément / Barral, Abel / Martín‐Closas, Carles / Dilcher, David L.

    Taxon. 2020 Dec., v. 69, no. 6

    2020  

    Abstract: Montsechia vidalii is an abundant plant fossil from the Barremian of northeastern Spain. Systematic affinities have been suggested with several living plant clades (liverworts, horsetails, conifers, Gnetales), particularly with angiosperms. We provide ... ...

    Abstract Montsechia vidalii is an abundant plant fossil from the Barremian of northeastern Spain. Systematic affinities have been suggested with several living plant clades (liverworts, horsetails, conifers, Gnetales), particularly with angiosperms. We provide detailed descriptions, documentation, and discussion of morphology and histology based on hand specimens of isolated leafy stems with fruits examined under the stereomicroscope, and with light and scanning electron microscopy. Montsechia vidalii shows shoots with flexible axes of two phyllotaxies and leaf morphologies. One morphology has opposite‐decussate leaves and stems, with small linear leaves. The other has spirally arranged leaves and stems, with inconspicuous leaves. The cuticle is thin and shows anomocytic stomata. Some stems bear terminal pairs of indehiscent fruits, probably developing from bicarpellate reproductive complexes, probably corresponding to two simple flowers each with a single carpel and arranged in indeterminate inflorescences. Every fruit contains a single seed and shows both similarities to the uniovulate ascidiate carpel that has been reconstructed as ancestral in angiosperms and derived features such as orthotropous, pendent and unitegmic ovules that are shared with the aquatic living genus Ceratophyllum. Phylogenetic analyses confirm that these similarities reflect a systematic relationship to Ceratophyllum and relatives. This and other recently described fossils, in particular Pseudoasterophyllites, suggest that this clade was diverse and ecologically significant in the Early Cretaceous. Flexible axes, thin cuticles, low number of stomata, and indehiscent fruits, as well as sedimentological and taphonomic evidence, strongly suggest a freshwater habit for M. vidalii.
    Keywords Ceratophyllum ; Early Cretaceous epoch ; Equisetum ; Gnetales ; Ursidae ; fossils ; freshwater ; histology ; phylogeny ; Spain
    Language English
    Dates of publication 2020-12
    Size p. 1273-1292.
    Publishing place John Wiley & Sons, Inc.
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 204216-2
    ISSN 0040-0262
    ISSN 0040-0262
    DOI 10.1002/tax.12409
    Database NAL-Catalogue (AGRICOLA)

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  7. Article: Lower Cretaceous charophytes from the Serrania de Cuenca, Iberian chain: Taxonomy, biostratigraphy and palaeoecology

    Vicente, Alba / Martín-Closas, Carles

    Cretaceous research. 2013 Mar., v. 40

    2013  

    Abstract: The assemblages of fossil charophyte fructifications from the La Huérguina Formation at the La Huérguina stratotype and the Las Hoyas section, along with some other samples from isolated outcrops are composed of Atopochara trivolvis var. triquetra, ... ...

    Abstract The assemblages of fossil charophyte fructifications from the La Huérguina Formation at the La Huérguina stratotype and the Las Hoyas section, along with some other samples from isolated outcrops are composed of Atopochara trivolvis var. triquetra, Globator maillardii var. trochiliscoides, Globator maillardii var. biutricularis var. nov., Clavator harrisii var. reyi, Ascidiella cruciata and Mesochara harrisii. Some reworked utricles of Ascidiella iberica var. iberica were also found. The in situ assemblage belongs to the Cruciata-Paucibracteatus Biozone, which is Late Barremian–Early Aptian in age. These results confirm that the entire deposition of the La Huérguina Formation took place within this biozone and not earlier, as previously thought. The top of the unit can be limited to the uppermost Barremian with biostratigraphic data from ostracods. Globator maillardii var. biutricularis var. nov. is defined as the end form for the Globator lineage according to present knowledge. It is characterised by its unique utricle morphology, showing a basal ring representing a second, external utricular layer. This layer shows a primitive structure, reminiscent of G. maillardii var. mutabilis, in contrast to the internal utricle, which is more derived and similar to G. maillardii var. trochiliscoides. In comparison with other non-marine formations of the same age in the Iberian Chain and in Europe, the charophyte assemblages from the La Huérguina Formation appear to be relatively poor and monotonous, suggesting that some of the species found elsewhere never reached this part of the basin owing to the brief development of non-marine facies there. The main differences in composition between the samples studied are indicative of the palaeoecological conditions. Atopochara trivolvis triquetra was found to be dominant in shallow lacustrine facies and Globator maillardii var. trochiliscoides and var. biutricularis are associated with temporary lakes from a well-drained palustrine area. Clavator harrisii and Mesochara harrisii thrived on floodplains whereas Ascidiella cruciata grew in palustrine environments with significant edaphic activity.
    Keywords Charophyta ; basins ; floodplains ; fossils ; fruits ; lakes ; paleoecology ; taxonomy ; Europe
    Language English
    Dates of publication 2013-03
    Size p. 227-242.
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0195-6671
    DOI 10.1016/j.cretres.2012.07.006
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: A CHARACEAN THALLUS WITH ATTACHED GYROGONITES AND ASSOCIATED FOSSIL CHAROPHYTES FROM THE MAASTRICHTIAN OF THE EASTERN PYRENEES (CATALONIA, SPAIN)¹

    Villalba-Breva, Sheila / Martín-Closas, Carles

    Journal of phycology. 2011 Feb., v. 47, no. 1

    2011  

    Abstract: The new species Clavatoraxis microcharophorus is described from the Lower Maastrichtian of the Eastern Pyrenees (Catalonia, Spain). Microchara sp. gyrogonites were found in anatomical connection with this thallus, attached to bract-cell rosettes and ... ...

    Abstract The new species Clavatoraxis microcharophorus is described from the Lower Maastrichtian of the Eastern Pyrenees (Catalonia, Spain). Microchara sp. gyrogonites were found in anatomical connection with this thallus, attached to bract-cell rosettes and coated by a structural tunica, formed by an expanded bract cell. This is a feature unknown in extant characeans, which only display lime incrustations similar to tunicae in extremely alkaline and well-illuminated environments. This is the first time that a complete fossil characean is described. The attribution of characean vegetative remains to the genus Clavatoraxis shows that this genus is not exclusive of clavatoraceans as previously thought. The taphonomic study of C. microcharophorus sp. nov. and associated fossil charophytes, along with sedimentological and microfacies analyses, has enabled us to characterize the habitat of this species in the Maastrichtian lake of Vallcebre. They grew forming meadows, and their remains were deposited in the poorly oxygenated lake bottom, where they were well preserved. A number of other characeans and porocharaceans were living in shallower belts. This was the case for Peckichara sp. and Munieria grambasti in the freshwater lacustrine meadows. Another species, Feistiella malladae, was found parautochthonous in brackish lakes.
    Keywords Charophyta ; lakes ; meadows ; new species ; thallus ; Spain
    Language English
    Dates of publication 2011-02
    Size p. 131-143.
    Publishing place Blackwell Publishing Ltd
    Document type Article
    ZDB-ID 281226-5
    ISSN 0022-3646
    ISSN 0022-3646
    DOI 10.1111/j.1529-8817.2010.00947.x
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: A CHARACEAN THALLUS WITH ATTACHED GYROGONITES AND ASSOCIATED FOSSIL CHAROPHYTES FROM THE MAASTRICHTIAN OF THE EASTERN PYRENEES (CATALONIA, SPAIN)(1).

    Villalba-Breva, Sheila / Martín-Closas, Carles

    Journal of phycology

    2011  Volume 47, Issue 1, Page(s) 131–143

    Abstract: The new species Clavatoraxis microcharophorus is described from the Lower Maastrichtian of the Eastern Pyrenees (Catalonia, Spain). Microchara sp. gyrogonites were found in anatomical connection with this thallus, attached to bract-cell rosettes and ... ...

    Abstract The new species Clavatoraxis microcharophorus is described from the Lower Maastrichtian of the Eastern Pyrenees (Catalonia, Spain). Microchara sp. gyrogonites were found in anatomical connection with this thallus, attached to bract-cell rosettes and coated by a structural tunica, formed by an expanded bract cell. This is a feature unknown in extant characeans, which only display lime incrustations similar to tunicae in extremely alkaline and well-illuminated environments. This is the first time that a complete fossil characean is described. The attribution of characean vegetative remains to the genus Clavatoraxis shows that this genus is not exclusive of clavatoraceans as previously thought. The taphonomic study of C. microcharophorus sp. nov. and associated fossil charophytes, along with sedimentological and microfacies analyses, has enabled us to characterize the habitat of this species in the Maastrichtian lake of Vallcebre. They grew forming meadows, and their remains were deposited in the poorly oxygenated lake bottom, where they were well preserved. A number of other characeans and porocharaceans were living in shallower belts. This was the case for Peckichara sp. and Munieria grambasti in the freshwater lacustrine meadows. Another species, Feistiella malladae, was found parautochthonous in brackish lakes.
    Language English
    Publishing date 2011-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 281226-5
    ISSN 1529-8817 ; 0022-3646
    ISSN (online) 1529-8817
    ISSN 0022-3646
    DOI 10.1111/j.1529-8817.2010.00947.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Book ; Online ; Thesis: Artkonzepte bei Makroalgen

    Nowak, Petra [Verfasser] / Schubert, Hendrik [Gutachter] / Martín-Closas, Carles [Gutachter]

    Anwendbarkeit genetischer Methoden zur Unterstützung morphologischer Artabgrenzungen an den Gattungen Chara und Fucus

    2016  

    Author's details Petra Nowak ; Gutachter: Hendrik Schubert, Carles Martín-Closas
    Keywords Biowissenschaften, Biologie ; Life Science, Biology
    Subject code sg570
    Language German
    Publisher Universität Rostock
    Publishing place Rostock
    Document type Book ; Online ; Thesis
    Database Digital theses on the web

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