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An Exceptionally Large Upper Jaw of Lytoceratoidea from the Upper Bajocian (Middle Jurassic) of the Northern Caucasus 来自北高加索上巴乔克世（中侏罗世）的特大上颚蛙类
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-08-03 DOI: 10.1134/s0031030124600318
V. V. Mitta, A. A. Mironenko
{"title":"An Exceptionally Large Upper Jaw of Lytoceratoidea from the Upper Bajocian (Middle Jurassic) of the Northern Caucasus","authors":"V. V. Mitta, A. A. Mironenko","doi":"10.1134/s0031030124600318","DOIUrl":"https://doi.org/10.1134/s0031030124600318","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A large-sized upper jaw of an ammonite from the <i>Niortense</i> Zone of the Upper Bajocian of the Kuban basin (Karachay-Cherkessia) is described. In its anterior part a pointed calcified structure (rhyncholite) is located. Judging by its shape and size, the upper jaw belonged to a species of the genus <i>Lytoceras</i> (family Lytoceratidae), the lower jaw of which was already described from the same area immediately below in the section. The presence of a rhyncholite allows us to attribute the new finding to the rhynchaptychus type of ammonoid jaws. This is the earliest known complete jaw of this type and, to date, the only known upper jaw of Lytoceratina. Probably, calcification of the anterior part of the jaw apparatus of ammonoids of the suborders Lytoceratina and Phylloceratina was a normal process occurring as the mollusk matured.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141939773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
The Role of Cyanobacteria in the Formation of Dendrolites: An Example from the Miaolingian Dendrolites, North China 蓝藻在树枝石形成过程中的作用：以华北庙岭石斛岩为例
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-20 DOI: 10.1134/s0031030123600099
Chung-Il Ri, Sang-Ho Kim, Yi-Dan Zhu, Xuan-Wang, Won-Hak Jo
{"title":"The Role of Cyanobacteria in the Formation of Dendrolites: An Example from the Miaolingian Dendrolites, North China","authors":"Chung-Il Ri, Sang-Ho Kim, Yi-Dan Zhu, Xuan-Wang, Won-Hak Jo","doi":"10.1134/s0031030123600099","DOIUrl":"https://doi.org/10.1134/s0031030123600099","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Dendrolites that are characterized by dendritic fabrics on the basis of mesostructure are dominated by isolated dendritic clusters of calcimicrobes and are distinct from the laminated stromatolite. Dendrolites in the top part of the Miaolingian Zhangxia Formation at the Dongping section in Dongping County of Shandong province make up huge microbial reef with the thickness of 60 m that are developed in the sea-level falling period, which represent a spectacularly sedimentological phenomenon. Dendrolites are made from calcimicrobes belong to fossils of the <i>Epiphyton</i> group and <i>Hedstroemia</i> group. Microscopically, the bifurcating filamentous tip show bent or broken phenomenon, and the edges of thallus received partially negligible encrustation. This can reflect biological response to extreme environments. In addition, the morphological features of shrub thalli growing upwards and the branched morphology that shows the basic dendritic growth structure in particular, truthfully show the basic characteristics of dendrolites. This phenomenon can reflect the biological properties of microorganisms trying to maintain their own growth structures. The micritic crusts may reflect that the study area dendrolites were formed by sophisticated calcification of EPS that form microbial biofilms in microbial mats dominated by cyanobacteria. Therefore, microbial reef predominated by dendrolites in the top part of the Miaolingian Zhangxia Formation at the Dongping section are a typical example of demonstrating the fundamental characteristics of dendrolites different from clotted thrombolite, and further, provide some clues for the study of the biological attributes and responses between microorganisms and environments.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141503874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Gray Partridges (Phasianidae: Genera Perdix and Enkuria gen. nov.) from the Early Pleistocene of Crimea and Remarks on the Evolution of the Genus Perdix 克里米亚早更新世的灰鹧鸪（雉科：Perdix属和Enkuria属新种）及Perdix属的演化评述
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-01 DOI: 10.1134/s0031030124700084
N. Zelenkov
{"title":"Gray Partridges (Phasianidae: Genera Perdix and Enkuria gen. nov.) from the Early Pleistocene of Crimea and Remarks on the Evolution of the Genus Perdix","authors":"N. Zelenkov","doi":"10.1134/s0031030124700084","DOIUrl":"https://doi.org/10.1134/s0031030124700084","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141395162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Icriodus multidentatus sp. nov. and I. quartadecimensis sp. nov.—New Conodont Species from the Frasnian Stage of the Southern Timan Icriodus multidentatus sp.
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-01 DOI: 10.1134/s0031030124700114
V. M. Nazarova, M. A. Soboleva
{"title":"Icriodus multidentatus sp. nov. and I. quartadecimensis sp. nov.—New Conodont Species from the Frasnian Stage of the Southern Timan","authors":"V. M. Nazarova, M. A. Soboleva","doi":"10.1134/s0031030124700114","DOIUrl":"https://doi.org/10.1134/s0031030124700114","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141402058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
New Data on the Microstructure of Tannuolina (Cambrian Zooproblematics) 关于坦努奥利纳微观结构的新数据（寒武纪动物学问题）
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-01 DOI: 10.1134/s0031030124700035
Yu. E. Demidenko, G. A. Karlova, D. A. Komlev
{"title":"New Data on the Microstructure of Tannuolina (Cambrian Zooproblematics)","authors":"Yu. E. Demidenko, G. A. Karlova, D. A. Komlev","doi":"10.1134/s0031030124700035","DOIUrl":"https://doi.org/10.1134/s0031030124700035","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141391931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
А New Species of the Genus Lekiskochiton (Mollusca, Polyplacophora) from the Lower Permian Reef Limestones of Shakhtau (Southern Cis-Urals) А 来自 Shakhtau（南西乌拉尔）下二叠统礁灰岩的 Lekiskochiton 属（软体动物，多孔动物）新物种
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-01 DOI: 10.1134/s003103012470014x
A. V. Mazaev
{"title":"А New Species of the Genus Lekiskochiton (Mollusca, Polyplacophora) from the Lower Permian Reef Limestones of Shakhtau (Southern Cis-Urals)","authors":"A. V. Mazaev","doi":"10.1134/s003103012470014x","DOIUrl":"https://doi.org/10.1134/s003103012470014x","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141412819","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
A New Species Paradeningeria magna sp. nov. (Sphinctozoa, Porifera) from the Nakhodka Reef (Southern Primorye) 来自纳霍德卡珊瑚礁（滨海省南部）的新物种 Paradeningeria magna sp.
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-01 DOI: 10.1134/s0031030124700047
E. N. Malysheva
{"title":"A New Species Paradeningeria magna sp. nov. (Sphinctozoa, Porifera) from the Nakhodka Reef (Southern Primorye)","authors":"E. N. Malysheva","doi":"10.1134/s0031030124700047","DOIUrl":"https://doi.org/10.1134/s0031030124700047","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141415878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Evolution and Taxonomy of the Pleistocene North Asian Zokors, Genus Siphneus (Myospalacidae, Rodentia, Mammalia) 更新世北亚鼢鼠属（啮齿目，哺乳纲）的进化与分类
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-01 DOI: 10.1134/s0031030124700072
S. E. Golovanov, V. Zazhigin
{"title":"Evolution and Taxonomy of the Pleistocene North Asian Zokors, Genus Siphneus (Myospalacidae, Rodentia, Mammalia)","authors":"S. E. Golovanov, V. Zazhigin","doi":"10.1134/s0031030124700072","DOIUrl":"https://doi.org/10.1134/s0031030124700072","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141397580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Stephanoceras humphriesianum (Ammonoidea), an Index Species of the Lower Bajocian, in the Basin of the Kuban River (Northern Caucasus, Russia) 库班河盆地（俄罗斯北高加索）下巴约柬统的一个索引物种--Stephanoceras humphriesianum（Amonoidea）
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-01 DOI: 10.1134/s0031030124700138
V. V. Mitta
{"title":"Stephanoceras humphriesianum (Ammonoidea), an Index Species of the Lower Bajocian, in the Basin of the Kuban River (Northern Caucasus, Russia)","authors":"V. V. Mitta","doi":"10.1134/s0031030124700138","DOIUrl":"https://doi.org/10.1134/s0031030124700138","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141410943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Postcranial Osteoderms of Late Permian Pareiasaurs from Eastern Europe. I. Chronology of Localities 来自东欧的晚二叠纪巨齿龙的颅骨后骨。I. 地点年代学
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-06-01 DOI: 10.1134/s0031030124700096
V. K. Golubev, M. A. Naumcheva, E. I. Boyarinova
{"title":"Postcranial Osteoderms of Late Permian Pareiasaurs from Eastern Europe. I. Chronology of Localities","authors":"V. K. Golubev, M. A. Naumcheva, E. I. Boyarinova","doi":"10.1134/s0031030124700096","DOIUrl":"https://doi.org/10.1134/s0031030124700096","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141395364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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