Geodiversitas最新文献_第10页

Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T/J boundary and sedimentary evolution of the southern margin of the northern Neotethys 土耳其南部Mersin Mélange Tavusayiri地块晚三叠纪至早侏罗纪放射虫、牙形刺和菊石组合：新特提斯北部南缘T/J边界和沉积演化的时间限制

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-11-26 DOI: 10.5252/geodiversitas2020v42a27

U. K. Tekin, L. Krystyn, C. Okuyucu, Yavuz Bedi, Kaan Sayıt

{"title":"Late Triassic to Early Jurassic radiolarian, conodont and ammonite assemblages from the Tavuscayiri block, Mersin Mélange, southern Turkey: Time constraints for the T/J boundary and sedimentary evolution of the southern margin of the northern Neotethys","authors":"U. K. Tekin, L. Krystyn, C. Okuyucu, Yavuz Bedi, Kaan Sayıt","doi":"10.5252/geodiversitas2020v42a27","DOIUrl":"https://doi.org/10.5252/geodiversitas2020v42a27","url":null,"abstract":"ABSTRACT The Mersin Mélange (northwest of Mersin city) includes a variety of large sedimentary blocks/tectonic slices of Palaeozoic and Mesozoic origins. Of these, the latter represents facial and tectonostratigraphic counterparts of the Beysehir-Hoyran Nappes (remnants of the northern Neotethys). The Tavuscayiri Block, located at the center of the mélange and close to the Orbuklukeli hill, is one of such Mesozoic occurrences, with a continuous pelagic sequence from the Upper Triassic to Lower Jurassic. At the Orbuklukeli hill, a succession of middle Norian to Toarcian age has been precisely dated, which starts with conodont assemblages for the Norian and Rhaetian and includes radiolarians for the upper Rhaetian. An acidic tuff layer corresponds to the T-J boundary, which passes above to an increasingly dominating chert-bearing limestone series, marking a gradually deepening-upward of the sequence. The early Hettangian radiolarians are poorly represented, but diverse and well-preserved radiolarians have been retrieved from the middle Hettangian to the Pliensbachian. A total of eighty-five taxa, including fourteen new species, have been determined. In addition to these, one new genus (Praeudalia Tekin, n. gen.) has been described from the Rhaetian part of the section. The top of the section is represented by nodular limestones in Ammonitico rosso facies, including a diverse Toarcian ammonite fauna. All lithologies of the Orbuklukeli section along the Tavuscayiri Block can be correlated with the previously described lithologies of the Kayabasi Group/Formation in the Bozkir Unit, and Gülbahar/Gümüslü units in the Lycian Nappes.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":"42 1","pages":"493 - 537"},"PeriodicalIF":1.8,"publicationDate":"2020-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45430155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Anatomical preservation of silicified Corylites J.S.Gardner leaves from the Paleocene maar lake of Menat (Puy-de-Dôme, France) Menat (Puy-de-Dôme，法国)古新世maar湖中硅化硅柱js.gardner叶片的解剖保存

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-11-05 DOI: 10.5252/geodiversitas2020v42a26

D. Uhl, A. Jasper, M. Wuttke

{"title":"Anatomical preservation of silicified Corylites J.S.Gardner leaves from the Paleocene maar lake of Menat (Puy-de-Dôme, France)","authors":"D. Uhl, A. Jasper, M. Wuttke","doi":"10.5252/geodiversitas2020v42a26","DOIUrl":"https://doi.org/10.5252/geodiversitas2020v42a26","url":null,"abstract":"ABSTRACT Uhl D., Jasper A. & Wuttke M. 2020. — Anatomical preservation of silicified corylites J.S.Gardner leaves from the Paleocene maar lake of Menat (Puy-de-Dôme, France). geodiversitas 42 (26): 485-492. http://geodiversitas.com/42/26 The late Paleocene fossil lagerstätte Menat in France is well known for its wealth of excellently preserved fossil plants and insects. Although the flora from this locality is regarded as characteristic for the late Thanetian in Western and Central Europe, there is a noteworthy lack of modern paleobotanical studies on this locality. The few existing studies on plant megafossils utilized only the gross morphology of leaves and carpological material for taxonomic questions, whereas anatomical data (i.e. from cuticles and permineralizations) have been completely neglected. The present study provides the first data on anatomically preserved internal tissues of leaves assigned to Corylites macquarrii (Forbes) Heer from this locality. Cell walls are preserved as silicates, whereas cell lumina are mostly empty. On occasion, cell lumina are filled with foam-like, porous silica. Anatomical preservation of these tissues is probably related to early diagenetic silicification of plant cell walls. Although at the moment nothing can be said about the source of the SiO2 it is likely that it is related to the volcanic origin of the Menat maar and/or volcanic activities in the vicinity of the lake during deposition of the sediments.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":"42 1","pages":"485 - 492"},"PeriodicalIF":1.8,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46506998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context 最古老的erymnochelyine龟头骨，Ragechelus sahelica n.gen.，n.sp.，来自非洲上白垩纪Iullemmeden盆地，及其地理和地质背景下的相关动物群

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-10-22 DOI: 10.5252/geodiversitas2020v42a25

France de Lapparent de Broin, L. Chirio, R. Bour

{"title":"The oldest erymnochelyine turtle skull, Ragechelus sahelica n. gen., n. sp., from the Iullemmeden basin, Upper Cretaceous of Africa, and the associated fauna in its geographical and geological context","authors":"France de Lapparent de Broin, L. Chirio, R. Bour","doi":"10.5252/geodiversitas2020v42a25","DOIUrl":"https://doi.org/10.5252/geodiversitas2020v42a25","url":null,"abstract":"ABSTRACT We describe the skull of Ragechelus sahelica, n. gen., n. sp., a pleurodiran Pelomedusoides turtle, the oldest skull known of the Erymnochelyinae. The specimen comes from the surroundings of Indamane village, from a littoral late Maastrichtian level of the Iullemeden sedimentary basin (southwestern Niger, Africa). It is compared on the one hand to the members of the subfamily including remains from the neighboring Ibeceten locality, but from an underlying continental Senonian, and, on the other hand, particularly to the bothremydid Nigeremys gigantea (Bergounioux & Crouzel, 1968), from a littoral Maastrichtian level close to that of Indamane, and from a closer to Indamane locality than Ibeceten. The associated fauna is reviewed in its stratigraphic context. Palaeogeographic considerations and systematic relationships indicate Erymnochelyinae widely diversified, in Africa from that time onwards, up to these days in Madagascar and notably with incursions in Western Europe during the Eocene times.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":"42 1","pages":"455 - 484"},"PeriodicalIF":1.8,"publicationDate":"2020-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47015210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Trophic position of some Late Devonian-Carboniferous (Mississippian) conodonts revealed on carbon organic matter isotope signatures: a case study of the East European basin 晚泥盆世—石炭世(密西比世)牙形刺的碳有机质同位素特征及其营养位置——以东欧盆地为例

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-10-15 DOI: 10.5252/geodiversitas2020v42a24

Andrey V. Zhuravlev

引用次数: 11

The first report of Lesbosoxylon Süss & Velitzelos from the early-middle Miocene of eastern Anatolia 安那托利亚东部中新世早期-中期Lesbosoxylon s<e:1> & Velitzelos首次报道

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-10-01 DOI: 10.5252/geodiversitas2020v42a23

Ü. Akkemik, Dimitra V. Mantzouka, D. Yildirim

{"title":"The first report of Lesbosoxylon Süss & Velitzelos from the early-middle Miocene of eastern Anatolia","authors":"Ü. Akkemik, Dimitra V. Mantzouka, D. Yildirim","doi":"10.5252/geodiversitas2020v42a23","DOIUrl":"https://doi.org/10.5252/geodiversitas2020v42a23","url":null,"abstract":"ABSTRACT A new fossil pine species from eastern Turkey is described and its botanical affinities are discussed. The sample was collected from the city of Kemaliye, Erzincan province, Turkey, and derives from the early-middle Miocene Divriği formation. Transverse, tangential and radial sections were taken from the petrified wood, and its palaeoxylotomical features were investigated. Based on its anatomical features including idioblastic cells in rays a new fossil-species of the genus Lesbosoxylon Süss & Velitzelos was identified as Lesbosoxylon kemaliyensis Akkemik & Mantzouka, sp. nov. Diagnostic features of the new species are: Transition from earlywood to latewood mostly gradual; axial and radial resin canals with thin-walled epithelial cells present; latewood tracheids thin to thick walled; bordered pits on radial walls of tracheids 1-2(-3) seriate; crassulae common; rays heterocellular, uniseriate, partly biseriate; uniseriate rays up to 27 cells high; fusiform rays up to 30 cells high; axial parenchyma occasionally present; ray tracheids 2-3 rows; cell walls of ray tracheids smooth; cross-field pitting pinoid, 1-2(-6) pits per cross-field. Detailed investigation of the botanical affinities of the new fossil wood suggested that the most closely related modern species is Pinus canariensis C. Sm in Buch, a relict species from the Canary Islands.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":"42 1","pages":"427 - 441"},"PeriodicalIF":1.8,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48158726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Amphibians and reptiles from the Neogene of Afghanistan 阿富汗新近纪的两栖类和爬行动物

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-09-17 DOI: 10.5252/geodiversitas2020v42a22

France de Lapparent de Broin, S. Bailon, M. Augé, J. Rage

引用次数: 4

Ostracods from the ‘Raibl Beds’ (Carnian, Late Triassic) of Belca section in Karavanke Mountains, northwestern Slovenia 斯洛文尼亚西北部卡拉万克山脉Belca剖面“Raibl Beds”（卡尼阶，三叠纪晚期）的介形虫

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-09-01 DOI: 10.5252/geodiversitas2020v42a21

M. Forel, T. Kolar-Jurkovšek, B. Jurkovšek

{"title":"Ostracods from the ‘Raibl Beds’ (Carnian, Late Triassic) of Belca section in Karavanke Mountains, northwestern Slovenia","authors":"M. Forel, T. Kolar-Jurkovšek, B. Jurkovšek","doi":"10.5252/geodiversitas2020v42a21","DOIUrl":"https://doi.org/10.5252/geodiversitas2020v42a21","url":null,"abstract":"ABSTRACT The taxonomy of marine ostracod assemblages from Belca section in the Karavanke Mountains, northwestern Slovenia, is discussed, adding to the scientific understanding of marine ostracods during the Carnian stage, Late Triassic. In Belca, the ostracod assemblages include 39 species, among which two are newly described: Dicerobairdia buseri Forel, n. sp. and Pontocypris? karavankensis Forel, n. sp. The recovery of abundant juvenile and adult specimens facilitated the illustration and discussion of the ontogenetic series of several typically Triassic species including Renngartenella sanctaecrucis Kris-tan-Tollmann in Kristan-Tollmann & Hamedani, 1973, Leviella bogschi Kozur, 1972 and Leviella veghae Kozur, 1972. The occurrence of sexual dimorphism is furthermore confirmed for Renngartenella sanctaecrucis. Ostracods in Belca record a major shift from low diversity and high dominance assemblages at the base of the section to higher diversity and lower dominance with diversification of stable open-marine taxa in the upper part. This pattern might illustrate low salinity levels related to high land-derived input at the base of the section and a return to relatively normal marine salinity in the intermediate sublittoral zone in the upper portion of Belca section.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":"42 1","pages":"377 - 407"},"PeriodicalIF":1.8,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46626136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Early Miocene squamate assemblage from the Mokrá-Western Quarry (Czech Republic) and its palaeobiogeographical and palaeoenvironmental implications 捷克共和国Mokrá-West采石场早中新世鳞片组合及其古生物地理和古环境意义

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-08-28 DOI: 10.5252/geodiversitas2020v42a20

M. Ivanov, A. Čerňanský, I. Bonilla-Salomón, Àngel H. Luján

{"title":"Early Miocene squamate assemblage from the Mokrá-Western Quarry (Czech Republic) and its palaeobiogeographical and palaeoenvironmental implications","authors":"M. Ivanov, A. Čerňanský, I. Bonilla-Salomón, Àngel H. Luján","doi":"10.5252/geodiversitas2020v42a20","DOIUrl":"https://doi.org/10.5252/geodiversitas2020v42a20","url":null,"abstract":"ABSTRACT Two fossiliferous karstic fissures from the Mokrá-Western Quarry, MWQ (1/2001 Turtle Joint; 2/2003 Reptile Joint) provided a diverse vertebrate fauna from the early Miocene (Burdigalian, MN 4) including squamates. The rather warm climatic conditions during the Miocene Thermal Maximum (17.8-17.7 Ma) enabled dispersal of thermophilic lizards and snakes throughout Central Europe. In total, ten major clades have been identified in MWQ localities, including: Lacertidae (Lacertidae indet., Lacertidae tooth morphotype 1 and 2); Amphisbaenia (Amphisbaenia indet.); ? Scincoidea (? Scincoidea indet.); Anguidae (Pseudopus laurillardi (Lartet, 1851), Pseudopus sp., Ophisaurus sp., and Anguinae indet.); Varanidae (Varanus mokrensis Ivanov, Klembara, Ruta & Böhme, 2018); Boidae (Bavarioboa cf. hermi Szyndlar & Schleich, 1993); Pythonidae (Python sp.); Colubridae (Colubridae gen. et sp. indet., Coluber [s.l.] sp., and “Colubrinae” indet., type 1), Natricidae (Natrix sp. and “Natricinae” indet.); Viperidae (Viperinae [‘Oriental vipers' group], Vipera sp. [‘European vipers' group]); and Elapidae (Elapidae gen. et sp. indet.). Python sp. from the MWQ represents the first known occurrence of this most thermophilic Neogene squamate taxon within the area of Central Paratethys and we assume that MAT did not fall below 18-19 °C in the vicinity of this locality during the late Burdigalian stage. These humid subtropical to paratropical climatic conditions, also documented by several full-aquatic and semi-aquatic amphibians and reptiles, were suitable for the occurrence of other thermophilic lizard and snake taxa reported from MWQ, including Varanus mokrensis, Pseudopus laurillardi, Bavarioboa, large Elapidae and ‘Oriental vipers'.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":"42 1","pages":"343 - 376"},"PeriodicalIF":1.8,"publicationDate":"2020-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49182763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Stéphane Peigné (1973-2017) – Nécrologie Stéphane Peigné（1973-2017）——讣告

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-07-23 DOI: 10.5252/geodiversitas2020v42a19

L. D. Bonis, L. Werdelin

{"title":"Stéphane Peigné (1973-2017) – Nécrologie","authors":"L. D. Bonis, L. Werdelin","doi":"10.5252/geodiversitas2020v42a19","DOIUrl":"https://doi.org/10.5252/geodiversitas2020v42a19","url":null,"abstract":"Stéphane Peigné nous a quittés le 4 Décembre 2017 après avoir lutté avec courage pendant des mois contre une terrible maladie. Il avait espéré l'avoir vaincue en 2016 mais elle l'a rattrapé inexorablement. Il était né en 1973 dans une petite commune de l'Est de la France et avait suivi sa scolarité dans la région jusqu'à son Baccalauréat. Il commença des études supérieures à l'université de Nancy, dans un cursus en Sciences de la Nature et de la Vie, pour les poursuivre à l'Université de Bourgogne par une licence de Biologie suivie d'une maîtrise d'Écologie. Cependant cette orientation vers la recherche en biologie évolutive et écologique ne lui suffisait plus et, désireux d'inclure le temps dans les processus évolutifs, il décida de bifurquer vers la paléontologie, en particulier celle des vertébrés, en s'inscrivant au Diplôme d'Études Approfondies (DEA) en Paléontologie de l'Université de Montpellier. C'est ce changement de direction qui lui permit de rencontrer Thanh Thuyh Nguyen Tu, sa future épouse et mère de ses deux enfants. Il s'orienta ensuite en 1996 vers l'Université de Poitiers pour commencer, sous la direction de l'un de nous (LdeB) une thèse qu'il termina avec succès en 2000. C'est aussi à Poitiers qu'il obtint, 10 ans plus tard, son Habilitation à Diriger des Recherches (HDR).","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":"42 1","pages":"327 - 342"},"PeriodicalIF":1.8,"publicationDate":"2020-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46466533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the morphology of the astragalus and calcaneus of the amphicyonids (Carnivora, Mammalia) from the Paleogene of Europe: implications for the ecology of the European bear-dogs 欧洲古近系两栖动物（食肉目、哺乳类）黄芪和跟骨的形态——对欧洲熊狗生态学的启示

IF 1.8 3区地球科学

Geodiversitas Pub Date : 2020-07-16 DOI: 10.5252/geodiversitas2020v42a18

Morgane Fournier, Sandrine Ladevèze, Kévin Le Verger, V. Fischer, R. Speijer, F. Solé

{"title":"On the morphology of the astragalus and calcaneus of the amphicyonids (Carnivora, Mammalia) from the Paleogene of Europe: implications for the ecology of the European bear-dogs","authors":"Morgane Fournier, Sandrine Ladevèze, Kévin Le Verger, V. Fischer, R. Speijer, F. Solé","doi":"10.5252/geodiversitas2020v42a18","DOIUrl":"https://doi.org/10.5252/geodiversitas2020v42a18","url":null,"abstract":"ABSTRACT The Paleogene mammals of Europe are rarely known from partial or complete skeletons. As a result, their systematics and ecology are often solely based on dental characters and postcranial remains, when available, are usually neglected. This explains why the locomotion of mammals of the Eocene-Oligocene transition, the “Grande Coupure”, is poorly known. The aim of this study is to describe the tarsal bones (astragali and calcanei) and characterize the locomotion of amphicyonid carnivorans, one of the most abundant mammalian predator groups from the Phosphorites du Quercy (France) sites. The identification of taxa and the characterization of both posture and locomotion were carried out using four criteria: relative abundance (in comparison with dental data), morphology, size, and body mass. Seven morphotypes, four among astragali and three among calcanei, are identified as Amphicyonidae and show various postures: plantigrade, semi-digitigrade, and digitigrade. One morphotype of the astragalus and one of the calcaneus are identified as Cynodictis lacustris Gervais, 1852, which exhibits a digitigrade posture. The study of postcranial bones, such as tarsals, allows for a better understanding of the ecology of these animals and deserves more interest in future morphological and phylogenetic studies.","PeriodicalId":55111,"journal":{"name":"Geodiversitas","volume":"42 1","pages":"305 - 325"},"PeriodicalIF":1.8,"publicationDate":"2020-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45281241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5