{"title":"A latest Carboniferous-earliest Permian palynoflora from the glacigenic Talchir Formation, Wardha Basin, central India and their biostratigraphic implications","authors":"Pauline Sabina Kavali , Ayushi Mishra","doi":"10.1016/j.revmic.2025.100843","DOIUrl":"10.1016/j.revmic.2025.100843","url":null,"abstract":"<div><div>The Talchir Formation of the Gondwana Supergroup in India is a geological unit of glaciomarine/ glaciofluvial/glaciolacustrine origin that documents the glaciation that affected the supercontinent of Gondwana during the late Paleozoic. Previous spore-pollen biostratigraphy constrained the depositional age of the entire Talchir Formation to the Asselian. In this paper we present a palynological assemblage obtained from the Talchir Formation in the bore hole MAWP 114, drilled in the late Paleozoic Wardha Basin, central India. It comprises of a very rich assemblage of 79 species, of which 38 species are spores, 34 species pollen and seven species of algae. Based on the identification of radiometrically and faunally constrained biostratigraphically key species such as <em>Vittatina</em> spp., <em>Converrucosisporites confluens, Pseudoreticulatispora pseudoreticulata</em>, among others, an age not older than Gzhelian is inferred for the interval studied. The inferred age allows us to relate the Talchir deposits with the last episode of the Late Paleozoic Ice Age (LPIA). The palynological assemblage of the Talchir Formation from the present study favours its correlation with the radiometrically updated palynostratigraphic schemes established across Gondwana, on the basis of which it is constrained to the Gzhelian-early Sakmarian, encompassing the Carboniferous-Permian boundary. In India the position of the Permo-Carboniferous boundary is elusive due to lack of volcanic tuffs containing datable zircons; however, based on spore-pollen and zircon dates from Namibia this boundary is placed within the <em>P. confluens</em> Zone. Several taxa viz., <em>Cristatisporites lestai, C. inconstans, C. microvacuolatus, C. crassilabratus</em>, C. <em>menendezii, C. stellatus, Lundbladispora braziliensis, L.riobonitensis, L.areolata, L. obsoleta, Brevitriletes leptocaina</em> and<em>, B. parmatus</em> were documented for the first time in Indian Talchir sediments.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"87 ","pages":"Article 100843"},"PeriodicalIF":0.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ostracods from the Cassian formation (Carnian, Late Triassic)","authors":"Marie-Béatrice Forel","doi":"10.1016/j.revmic.2025.100840","DOIUrl":"10.1016/j.revmic.2025.100840","url":null,"abstract":"<div><div>Ostracod assemblages from three sites exposing the Cassian Formation (Carnian) in the Dolomites are here described and discussed: Seelandalpe, Milières and Pralongia. They are the opportunity to update their taxonomy and increase the knowledge of their biodiversity for the first time since the 1970s. Forty-three species distributed into 27 genera and 11 families are reported, numerous species being kept in open nomenclature because of rarity. <em>Hiatobairdia peggy</em> Forel sp. nov. is newly described and <em>Hungarella limbata</em>, the second species described from the Cassian Formation and originally attributed to the genus <em>Cytherella</em>, is re-attributed to <em>Aneisohealdia</em> based on the presence of an anterior spine. A neotype is designated for <em>Aneisohealdia limbata</em>, which type specimens were lost before the description of the species. Following the present analysis, 33 formal ostracod species are now known from the Cassian Formation. The Milières locality here provides the first record of Cypridinidae for the Cassian Formation, pointing to complex predator-prey relationships.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"87 ","pages":"Article 100840"},"PeriodicalIF":0.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Špela Goričan , Luis O'Dogherty , Giuseppe Cortese
{"title":"Editorial preface to the INTERRAD XVI Virtual Special Issue on Mesozoic and Cenozoic Radiolaria","authors":"Špela Goričan , Luis O'Dogherty , Giuseppe Cortese","doi":"10.1016/j.revmic.2025.100842","DOIUrl":"10.1016/j.revmic.2025.100842","url":null,"abstract":"","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"87 ","pages":"Article 100842"},"PeriodicalIF":0.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Late Silurian – Early Devonian marine ostracods from Kuan Tung Formation, Satun Province, southern Thailand","authors":"Anucha Promduang, Anisong Chitnarin","doi":"10.1016/j.revmic.2024.100817","DOIUrl":"10.1016/j.revmic.2024.100817","url":null,"abstract":"<div><div>Late Silurian to Early Devonian ostracods are reported for the first time from the Kuan Tung Formation (Sibumasu terrane) in southern Thailand. The studied limestone samples yielded abundant ostracods belonging to five suborders, six superfamilies, 17 genera, and 34 species, including the newly described <em>Ampuloides thungsamedensis</em> nov. sp. Other species are members of <em>Ampuloides, Microcheilinella, Bairdiocypris, Baschkirina?, Rectella?, Pseudorayella, Acratia, Bairdia, Fabalicypris, Cytherellina, Healdia, Kummerowia</em>?<em>, Aparchites, Brevidorsa, Samarella, Coelonella, Knoxiella</em>? with a few specimens of Eridoconchidae. Overall, the composition of ostracod assemblages is stable from the lower to middle subunits of the study section and points to shallow water environment on a carbonate deep shelf below the fair-weather wave base. The fauna shows relationships with Early to Late Devonian ostracods from South China, suggesting a narrow seaway between Sibumasu and South China terranes during Late Silurian to Early Devonian (late Ludlow to early Emsian).</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100817"},"PeriodicalIF":0.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marie Cueille , Taniel Danelian , Kenji M. Matsuzaki
{"title":"Spumellarian, collodarian, and entactinarian radiolarians observed in sediment traps from the southern Ionian Sea (eastern mediterranean)","authors":"Marie Cueille , Taniel Danelian , Kenji M. Matsuzaki","doi":"10.1016/j.revmic.2024.100820","DOIUrl":"10.1016/j.revmic.2024.100820","url":null,"abstract":"<div><div>Based on sediment trap material collected from the southern Ionian Sea (Eastern Mediterranean), this study describes and illustrates 54 radiolarian species, 48 of which are spumellarians, 3 collodarians and 3 entactinarians. The presence of <em>Larcopyle buetschlii chenmuhongi, Phorticium polycladum</em>, and <em>Polysolenia collina</em> is reported for the first time from the Mediterranean Sea. We also identified for the first time <em>Spongodendron macrodoras</em> in the eastern Mediterranean Sea, previously known only from the western Mediterranean. Despite their geographical proximity, only six species are in common with the radiolarian fauna of the Adriatic Sea. We reviewed the biogeographical distribution and the known depth habitat of all species identified here at the species level. Most of them are known from tropical to temperate regions, although we also encountered few species with cold-water affinities such as <em>Lithelius minor, Lithelius nautiloides, Hexacromyum enthacanthum, Rhizosphaera mediana</em>, and <em>Spongodiscus resurgens</em>. Most of the encountered species are surface to sub-surface dwellers, including several known symbiont-bearing species, and only few are deep-dwellers, such as <em>Hexacromyum enthacanthum, Tetrapetalon echinaster, Lithelius nautiloides</em> and <em>Lithelius minor</em>.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100820"},"PeriodicalIF":0.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lucas Silveira Antonietto , David Ian Machado Alves , Cláudio Magalhães Almeida , Dermeval Aparecido do Carmo , Vera Maria Medina da Fonseca
{"title":"A reassessment of the type-materials of Ostracoda (Crustacea, Oligostraca) lost in the “Museu Nacional” Great Fire of September 2, 2018","authors":"Lucas Silveira Antonietto , David Ian Machado Alves , Cláudio Magalhães Almeida , Dermeval Aparecido do Carmo , Vera Maria Medina da Fonseca","doi":"10.1016/j.revmic.2024.100807","DOIUrl":"10.1016/j.revmic.2024.100807","url":null,"abstract":"<div><div>On September 2, 2018, a catastrophic fire occurred at the “Museu Nacional” in Rio de Janeiro, Brazil, nearly destroying its once rich scientific collections. That accident latter generated a movement from the museum and the scientific community to restore their collections, either by bringing new specimens to the institution or by providing information about the ones lost in the tragedy. Herein we present our contribution to that effort: high-resolution scanning electron microscope images of holotypes and paratypes of 23 fossil ostracod species and subspecies that were destroyed by the “Museu Nacional” fire. These taxa occur in several Brazilian and central West African Lower Cretaceous lithological units, and some of them (<em>Cypridea [Pseudocypridina] faveolata</em> and <em>Sebastianites fida minor</em>) are even guide fossils to these strata. The present images and taxonomical updates of species – including new combinations for <em>Sebastianites fida minor, Sebastianites</em>? <em>minima, Sebastianites</em>? <em>sostensis granulata</em> and <em>Theriosynoecum ventrostriatum</em> – will also enable future studies of ostracod species from Brazilian and central West African Lower Cretaceous basins, as they provide an accurate system of identification in absence of direct observation of these type specimens once housed at the “Museu Nacional” scientific collections.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100807"},"PeriodicalIF":0.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"New species of encrusting foraminifera from the Carboniferous (Upper Mississippian) of Central Russia","authors":"Olev Vinn , Aleksandr A. Mironenko","doi":"10.1016/j.revmic.2024.100819","DOIUrl":"10.1016/j.revmic.2024.100819","url":null,"abstract":"<div><div>New encrusting foraminifera <em>Tolypammina kalugensis</em> sp. nov. is described from the Carboniferous of Central Russia. The test of the new species is large and completely attached to hard substrate, consisting of an ovoid-shaped proloculus followed by an undivided tubular second chamber. The encrusting fauna is primarily composed of a monospecific association of <em>T. kalugensis</em> sp. nov. Additionally, there are only a few occurrences of small, phosphatic encrusting brachiopods. The remarkably low diversity and nearly monospecific encrusting fauna found in the Dashkovka Member of the Gurovo Formation indicate unusual environmental conditions. The scarcity of benthic organisms could be attributed to oxygen deficiency. Furthermore, these black and green clays of the Dashkovka Member likely accumulated in the deepest parts of the basin, situated below the photic zone, which further supports the hypothesis of oxygen-poor conditions.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100819"},"PeriodicalIF":0.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Taxonomic significance of the radiolarian family Tetraspinocyrtiidae Kozur and Mostler and related families from the Sorgun Ophiolitic Mélange, southern Turkey","authors":"Péter Ozsvárt , Paulian Dumitrica , Patrice Moix","doi":"10.1016/j.revmic.2024.100808","DOIUrl":"10.1016/j.revmic.2024.100808","url":null,"abstract":"<div><div>The present work evaluates the significance of the early Tuvalian (late Carnian, Late Triassic) Tetraspinocyrtiidae and related families (radiolarians) from the Sorgun Ophiolitic Mélange, southern Turkey. Two new genera: <em>Nogursa</em> and <em>Sorgunocyrtis</em> and additional fifteen new species and a new subspecies are described from the Tavusçayırı Block, northeast of Sorgun village, Mersin, southern Turkey. The radiolarian fauna belongs to the <em>Spongotortilispinus moixi</em> Radiolarian Zone (equivalent to <em>Paragondolella postinclinata – Paragondolella noah</em> Conodont Zone).</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100808"},"PeriodicalIF":0.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Actinomma sogndalensis n. sp. (Radiolaria, Polycystina) an endemic species to the Sognefjord, western Norway","authors":"Jane K. Dolven , Kjell R. Bjørklund","doi":"10.1016/j.revmic.2024.100818","DOIUrl":"10.1016/j.revmic.2024.100818","url":null,"abstract":"<div><div>Studies of polycystine radiolarians (marine planktonic protists) have shown that great faunistic differences occur between the different Norwegian fjord systems. Plankton studies by Swanberg and Bjørklund in the early 1980′s identified more than 55 polycystine radiolarian species, including two unidentified forms of <em>Actinomma</em> noted as sp. A and sp. B. The discovery of fully developed adult individuals of the same taxa in plankton material from the Sogndalsfjord in 2010 revealed that the sp. A form in fact was a juvenile stage of the sp. B form. Its general morphologic skeletal structure differs so much from the other local <em>Actinomma</em> species that the whole concept of how to define, and what to include in, this genus has been taken up here for discussion.</div><div>This new species, described herein as <em>Actinomma sogndalensis</em>, has mainly been found in the Sognefjord, which leads us to conclude that <em>A. sogndalensis</em> might be an example of a real endemic fjord species. Due to the fragility of the latticed cortical shells, only the two thick primary medullary shells are preserved in the sediment. This led us to include a discussion regarding the number of concentric shells and their relevance or usefulness as a taxonomic criterion at the genus level in conjunction with this description of the new species. The genus <em>Actinomma</em> is emended to include species with two or multiple lattice spheres. <em>Cromyechinus</em> is by us still regarded as a junior synonym of <em>Actinomma</em>.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100818"},"PeriodicalIF":0.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143570510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Francesco Sciuto , Angela Baldanza , Agatino Reitano
{"title":"Ostracods taxonomic study and other faunistic record from Costa Bausa (Buccheri, Southeastern Sicily)","authors":"Francesco Sciuto , Angela Baldanza , Agatino Reitano","doi":"10.1016/j.revmic.2024.100830","DOIUrl":"10.1016/j.revmic.2024.100830","url":null,"abstract":"<div><div>In Costa Bausa, along the left side of the Torrente Mazzarino (NE Buccheri, SE Sicily), marine sands referred to the Pliocene by many authors for their stratigraphic position and the molluscs fauna they contain, crop out unconformably above the Miocene carbonate succession. In the present study, the taxonomy of ostracods of these sands is performed and new species are described, the foraminifera are analyzed for the first time and a taxonomic list of molluscs is also provided. The ostracod fauna is composed of specimens mostly belonging to shallow marine genera, such as <em>Aurila, Neonesidea, Bosquetina, Callistocythere, Carynocythereis, Cistacythereis, Cytherelloidea, Cytheretta, Costa, Graptocythere, Grinioneis, Loxoconcha, Mutilus, Caudites, Pontocythere, Semicytherura, Tenedocythere, Urocythereis, Verrucocythereis</em> and <em>Xestoleberis</em>. Among them, eight species are newly described: <em>Perissocytheridea</em> (<em>Kroemmelbeinella</em>) <em>hiblaea</em> n. sp., <em>Aurila costabausaensis</em> n. sp., <em>Aurila daphnidis</em> n. sp., <em>Aurila mazzarinoensis</em> n. sp., <em>Aurila sanctiandreae</em> n. sp., <em>Tenedocythere forticostata</em> n. sp., <em>Cytheretta buccheriensis</em> n. sp., <em>Verrucocythereis verrucomurata</em> n. sp.</div><div>Among planktonic foraminifera, only few specimens of <em>Orbulina universa, O. suturalis, Trilobatus trilobus</em> and <em>T. sacculifer</em> occur. The assemblage of benthic foraminifera is characterized by <em>Amphistegina lobifera, A. lessonii, Elphidium crispum, E. macellum, Ammonia beccarii, A. parkinsoniana, Lobatula lobatula, Cancris auricula, Patellina corrugata, Quinqueloculina seminulum, Massilina oblonga, Oolina exagona</em> and <em>O. lineata</em>.</div><div>The molluscs association found has helped to relate the studied levels to the Late Pliocene.</div></div>","PeriodicalId":45442,"journal":{"name":"REVUE DE MICROPALEONTOLOGIE","volume":"86 ","pages":"Article 100830"},"PeriodicalIF":0.7,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}