Pub Date : 2024-03-14DOI: 10.1134/s003103012360021x
Ya. B. Legostaeva, N. E. Sivtseva, V. F. Popov, I. V. Samsonova, A. N. Nikolaev, A. V. Protopopov
Abstract
Harsh environmental conditions of the study area result in low rates of ecosystem renewal. Results of geoecological studies at the sites of searching for and extraction of fossil remains of mammoth fauna in the middle reaches of the Indigirka River are presented. During the extraction of mammoth fauna remains using hydraulic washing-out, landscape components are disrupted, followed by leaching of the bedrock into creeks and rivers, thus leading to deterioration of abiotic components of the aquatic environment. Analysis of the geoecological state of the abiotic components of the ecosystem at the study site was used to assess the effects of the extraction of mammoth tusks by hydraulic mining. The study objects are cryogenic soils, bottom sediments and surface waters of the Semyuelyakh, Tirekhtyakh, and Indigirka rivers on the middle course segment. Soil and sediment samples were used to determine pH, mobile phosphorus, and Corg. Total content of Cu, Sn, Zn, Pb, Ge, B, Cr, Ni, V, Sc, Co, Ba, Sr, Nb, Zr, Y, Yb was analyzed using the spectral semi-quantitative method. The cationic-anionic composition, mineralization, suspended solids, pH and concentrations of Mn, Pb, Ni, Cu, Cd, Zn, Co, Fe were determined in surface water samples by atomic absorption spectrometry with electrothermal atomization. The concentration coefficients and anthropogenic load index were calculated. Studies conducted in 2022 established that there was a local impact on surface water. At the site of hydraulic pumping of water used to wash away the soil, an increase in mineralization, suspended solids, color index, and changes in the trace element composition were recorded, showing that manganese, nickel, iron, copper and zinc contribute the most to water pollution levels.
{"title":"Geoecological Aspects of Collecting Fossil Remains of Mammoth Fauna","authors":"Ya. B. Legostaeva, N. E. Sivtseva, V. F. Popov, I. V. Samsonova, A. N. Nikolaev, A. V. Protopopov","doi":"10.1134/s003103012360021x","DOIUrl":"https://doi.org/10.1134/s003103012360021x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Harsh environmental conditions of the study area result in low rates of ecosystem renewal. Results of geoecological studies at the sites of searching for and extraction of fossil remains of mammoth fauna in the middle reaches of the Indigirka River are presented. During the extraction of mammoth fauna remains using hydraulic washing-out, landscape components are disrupted, followed by leaching of the bedrock into creeks and rivers, thus leading to deterioration of abiotic components of the aquatic environment. Analysis of the geoecological state of the abiotic components of the ecosystem at the study site was used to assess the effects of the extraction of mammoth tusks by hydraulic mining. The study objects are cryogenic soils, bottom sediments and surface waters of the Semyuelyakh, Tirekhtyakh, and Indigirka rivers on the middle course segment. Soil and sediment samples were used to determine pH, mobile phosphorus, and C<sub>org</sub>. Total content of Cu, Sn, Zn, Pb, Ge, B, Cr, Ni, V, Sc, Co, Ba, Sr, Nb, Zr, Y, Yb was analyzed using the spectral semi-quantitative method. The cationic-anionic composition, mineralization, suspended solids, pH and concentrations of Mn, Pb, Ni, Cu, Cd, Zn, Co, Fe were determined in surface water samples by atomic absorption spectrometry with electrothermal atomization. The concentration coefficients and anthropogenic load index were calculated. Studies conducted in 2022 established that there was a local impact on surface water. At the site of hydraulic pumping of water used to wash away the soil, an increase in mineralization, suspended solids, color index, and changes in the trace element composition were recorded, showing that manganese, nickel, iron, copper and zinc contribute the most to water pollution levels.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882664","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}
Pub Date : 2024-02-13DOI: 10.1134/s003103012312002x
M. A. Shishkin, I. V. Novikov, A. G. Sennikov, V. K. Golubev, B. I. Morkovin
{"title":"CHAPTER I. ANNOTATED SYSTEMATIC CATALOG OF TRIASSIC TETRAPODS OF RUSSIA","authors":"M. A. Shishkin, I. V. Novikov, A. G. Sennikov, V. K. Golubev, B. I. Morkovin","doi":"10.1134/s003103012312002x","DOIUrl":"https://doi.org/10.1134/s003103012312002x","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767318","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}
Pub Date : 2024-02-13DOI: 10.1134/s0031030123110023
A. M. Beregova, M. A. Nikitin, K. V. Mikhailov, B. D. Efeykin
Abstract
In this review, we briefly discuss genes involved in eye and leg development in Drosophila melanogaster and Vertebrates. The fact that these animals have many homologous genes and the ways these genes interact in their development is consistent with the concept of ‘deep homology’ and the hypotheses of a complex common ancestor of Bilateria, which had eyes and limbs. Nematode genomes contain most of the genes, which control eye and limb development in other animals. We show this is also true for Nematomorpha, though the sets of preserved genes are different in these taxa: ortholog of dpp/BMP was found in Nematomorpha, though Nematoda have just a paralogs of this gene. Both Nematoda and Nematomorpha lack orthologs of genes Ss, fng/Rfng, Cll, which regulate limbs development in other animals.
{"title":"Legless and Eyeless Animals","authors":"A. M. Beregova, M. A. Nikitin, K. V. Mikhailov, B. D. Efeykin","doi":"10.1134/s0031030123110023","DOIUrl":"https://doi.org/10.1134/s0031030123110023","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>In this review, we briefly discuss genes involved in eye and leg development in <i>Drosophila melanogaster</i> and <i>Vertebrates</i>. The fact that these animals have many homologous genes and the ways these genes interact in their development is consistent with the concept of ‘deep homology’ and the hypotheses of a complex common ancestor of Bilateria, which had eyes and limbs. Nematode genomes contain most of the genes, which control eye and limb development in other animals. We show this is also true for Nematomorpha, though the sets of preserved genes are different in these taxa: ortholog of dpp/BMP was found in Nematomorpha, though Nematoda have just a paralogs of this gene. Both Nematoda and Nematomorpha lack orthologs of genes <i>Ss</i>, <i>fng</i>/<i>Rfng</i>, <i>Cll</i>, which regulate limbs development in other animals.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882556","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}
Pub Date : 2024-02-13DOI: 10.1134/s0031030123120043
M. A. Shishkin, I. V. Novikov, A. G. Sennikov
{"title":"CHAPTER III. SPATIAL DIFFERENTIATION OF TETRAPOD COMMUNITIES OF EUROPEAN RUSSIA IN THE EARLY TRIASSIC","authors":"M. A. Shishkin, I. V. Novikov, A. G. Sennikov","doi":"10.1134/s0031030123120043","DOIUrl":"https://doi.org/10.1134/s0031030123120043","url":null,"abstract":"","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767450","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}
Pub Date : 2024-02-13DOI: 10.1134/s0031030123110072
O. N. Kotenko, A. N. Ostrovsky
Abstract
The medium-sized lophotrochozoan phylum Bryozoa demonstrates a surprisingly wide range of larval forms. Few zygoparous species from the class Gymnolaemata possess long-lived planktotrophic larva (cyphonautes and paracyphonautes). The rest of gymnolaemates, and all species from classes Stenolaemata and Phylactolamata, incubate their embryos, whose development relies on egg’s yolk, extraembryonic nutrition (matrotrophy) or both, and have a brief free-swimming larval stage. Comparative morpho-functional analysis indicates that in bryozoans, similar to many other marine invertebrates, transitions from planktotrophic to endotrophic larvae were multiple and, obviously, were based on changes in oogenesis. Besides, the acquisition of a new larval type has always occurred in association with the evolution of embryonic incubation in Bryozoa. In myolaemates, the main trends in the evolution of endotrophy were reduction of the larval gut, loss of the larval protective cuticle/shell, invagination of the pallial epithelium of the episphere, and increase of the corona. Furthermore, larvae of stenolaemates lost their aboral and pyriform organs. Although being planktotrophic, the cyphonautes is a highly modified larval form, and cannot be considered as an ancestral type of bryozoan larvae. Phylactolaemates have a highly derived heterochronous development with a free-swimming stage that is, in fact, a chimera—either an ancestrula or a juvenile colony having a larval ciliary covering.
{"title":"Unravelling the Evolution of Bryozoan Larvae","authors":"O. N. Kotenko, A. N. Ostrovsky","doi":"10.1134/s0031030123110072","DOIUrl":"https://doi.org/10.1134/s0031030123110072","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The medium-sized lophotrochozoan phylum Bryozoa demonstrates a surprisingly wide range of larval forms. Few zygoparous species from the class Gymnolaemata possess long-lived planktotrophic larva (cyphonautes and paracyphonautes). The rest of gymnolaemates, and all species from classes Stenolaemata and Phylactolamata, incubate their embryos, whose development relies on egg’s yolk, extraembryonic nutrition (matrotrophy) or both, and have a brief free-swimming larval stage. Comparative morpho-functional analysis indicates that in bryozoans, similar to many other marine invertebrates, transitions from planktotrophic to endotrophic larvae were multiple and, obviously, were based on changes in oogenesis. Besides, the acquisition of a new larval type has always occurred in association with the evolution of embryonic incubation in Bryozoa. In myolaemates, the main trends in the evolution of endotrophy were reduction of the larval gut, loss of the larval protective cuticle/shell, invagination of the pallial epithelium of the episphere, and increase of the corona. Furthermore, larvae of stenolaemates lost their aboral and pyriform organs. Although being planktotrophic, the cyphonautes is a highly modified larval form, and cannot be considered as an ancestral type of bryozoan larvae. Phylactolaemates have a highly derived heterochronous development with a free-swimming stage that is, in fact, a chimera—either an ancestrula or a juvenile colony having a larval ciliary covering.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139773542","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}
Pub Date : 2024-02-13DOI: 10.1134/s0031030123110126
D. E. Shcherbakov
Abstract
The key points of the main evolutionary line of Articulata, leading from polychaetes to insects, are considered. The far-reaching similarity of the most primitive insects, jumping bristletails, with malacostracans, especially syncarids, leaves no doubt about the origin of the former directly from the latter. The similarity of mayfly nymphs to bristletails indicates that the evolution of Pterygota began with amphibiotic Palaeoptera. Myriapods are secondarily simplified descendants of early hexapods, having lost the division of the body into the thorax and abdomen and other ancestral characters due to transition to a cryptic lifestyle. Entognathous hexapods illustrate the initial stages of myriapodization of bristletails. Following Sharov, insect ancestry can be traced back into deep time via crustaceans to trilobitomorphs, Megacheira, and further to the most ancient arthropods, dinocarids—with grasping antennae but without walking legs! Many structural features of arthropods were formed in Polychaeta—the most primitive Articulata. The group most similar to arthropods are scale worms (Aphroditacea). By analogy with myriapods and entognaths, lobopods and non-arthropodan Ecdysozoa should be interpreted as side branches, which emerged from the dinocarid root of Arthropoda and simplified their body plans. Transformations of body plans occurred through heterochronies and heterotopies (including gamoheterotopies).
{"title":"The Main Line of the Evolution of Articulata—From Polychaetes to Insects","authors":"D. E. Shcherbakov","doi":"10.1134/s0031030123110126","DOIUrl":"https://doi.org/10.1134/s0031030123110126","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The key points of the main evolutionary line of Articulata, leading from polychaetes to insects, are considered. The far-reaching similarity of the most primitive insects, jumping bristletails, with malacostracans, especially syncarids, leaves no doubt about the origin of the former directly from the latter. The similarity of mayfly nymphs to bristletails indicates that the evolution of Pterygota began with amphibiotic Palaeoptera. Myriapods are secondarily simplified descendants of early hexapods, having lost the division of the body into the thorax and abdomen and other ancestral characters due to transition to a cryptic lifestyle. Entognathous hexapods illustrate the initial stages of myriapodization of bristletails. Following Sharov, insect ancestry can be traced back into deep time via crustaceans to trilobitomorphs, Megacheira, and further to the most ancient arthropods, dinocarids—with grasping antennae but without walking legs! Many structural features of arthropods were formed in Polychaeta—the most primitive Articulata. The group most similar to arthropods are scale worms (Aphroditacea). By analogy with myriapods and entognaths, lobopods and non-arthropodan Ecdysozoa should be interpreted as side branches, which emerged from the dinocarid root of Arthropoda and simplified their body plans. Transformations of body plans occurred through heterochronies and heterotopies (including gamoheterotopies).</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882551","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}
Pub Date : 2024-02-13DOI: 10.1134/s0031030123110114
S. V. Rozhnov
Abstract
Oxygen oases were the ecological niches where the evolutionary processes that led to the emergence of the first multicellular animals probably took place. These oases likely appeared in zones of maximum photosynthesis at depths of 10–30 meters in the pelagic zone and on the sea bottom, due to the delay in the release of oxygen from seawater into the atmosphere. The likelihood of the emergence of multicellularity among choanoflagellates, ancestral to Metazoa, is supported by their wide range of life forms, which through various morphogenetic pathways developed the main archetypes postulated by the hypotheses of Phagocytella, Gastraea, Synzoospores and their modifications.
{"title":"Evolutionary-Ecological Aspects of the Origin and Early Diversification of Multicellular Animals","authors":"S. V. Rozhnov","doi":"10.1134/s0031030123110114","DOIUrl":"https://doi.org/10.1134/s0031030123110114","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Oxygen oases were the ecological niches where the evolutionary processes that led to the emergence of the first multicellular animals probably took place. These oases likely appeared in zones of maximum photosynthesis at depths of 10–30 meters in the pelagic zone and on the sea bottom, due to the delay in the release of oxygen from seawater into the atmosphere. The likelihood of the emergence of multicellularity among choanoflagellates, ancestral to Metazoa, is supported by their wide range of life forms, which through various morphogenetic pathways developed the main archetypes postulated by the hypotheses of Phagocytella, Gastraea, Synzoospores and their modifications.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767458","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}
Pub Date : 2024-02-13DOI: 10.1134/s0031030123110060
V. V. Isaeva
Abstract
A branching body pattern with one head and many “tails”, unique for recent Bilateria, was found in three species of endosymbiotic polychaetes of the family Syllidae (McIntosh, 1879; Glasby et al., 2012; Aguado et al., 2015, 2022). Among recent echinoderms, many species of crinoids, brittle stars, and holothurians have dendriform branching bodies with many distal, posterior ends of their arms, rays, and tentacles, which include the typical axial ambulacral complex. Multiple bifurcations of the posterior (distal) parts create fractal branching of the body pattern, representing a macroevolutionary transformation of the ancestral body plan in Bilateria.
{"title":"An Unusual Body Plan in Bilateria: a Fractal Branching Body","authors":"V. V. Isaeva","doi":"10.1134/s0031030123110060","DOIUrl":"https://doi.org/10.1134/s0031030123110060","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A branching body pattern with one head and many “tails”, unique for recent Bilateria, was found in three species of endosymbiotic polychaetes of the family Syllidae (McIntosh, 1879; Glasby et al., 2012; Aguado et al., 2015, 2022). Among recent echinoderms, many species of crinoids, brittle stars, and holothurians have dendriform branching bodies with many distal, posterior ends of their arms, rays, and tentacles, which include the typical axial ambulacral complex. Multiple bifurcations of the posterior (distal) parts create fractal branching of the body pattern, representing a macroevolutionary transformation of the ancestral body plan in Bilateria.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882546","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}
Pub Date : 2024-02-13DOI: 10.1134/s0031030123110084
G. V. Mirantsev
Abstract
Middle–Upper Carboniferous (Pennsylvanian) crinoids with aberrant arm branches from the Moscow region are studied. It is shown that aberrations in the arm branches can be the result of mechanical damage during incorrect (augmentative) regeneration, as previously assumed, or the result of initial phenotype disorders. The latter cases show the evolutionary potential of the group. Consolidation of such aberrations in the phylogenies of certain groups of crinoids led to speciation and formation of new taxa.
{"title":"Aberrant Arm Branches in Pennsylvanian Crinoids from the Moscow Region","authors":"G. V. Mirantsev","doi":"10.1134/s0031030123110084","DOIUrl":"https://doi.org/10.1134/s0031030123110084","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Middle–Upper Carboniferous (Pennsylvanian) crinoids with aberrant arm branches from the Moscow region are studied. It is shown that aberrations in the arm branches can be the result of mechanical damage during incorrect (augmentative) regeneration, as previously assumed, or the result of initial phenotype disorders. The latter cases show the evolutionary potential of the group. Consolidation of such aberrations in the phylogenies of certain groups of crinoids led to speciation and formation of new taxa.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140882530","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}
Pub Date : 2024-02-13DOI: 10.1134/s0031030123110035
A. E. Davydov, Yu. V. Yashunsky, G. V. Mirantsev, A. A. Krutykh
Abstract
A new genus and species of hypercalcified calcareous sponge, Gzhelistella cornigera gen. et sp. nov., is described from the Kosherovo Formation (Gzhelian Stage) of the Moscow region. The new genus is the first representative of hypercalcified calcareous sponges from the Upper Carboniferous with an “inozoan-like” internal structure and a characteristic spicular organization of the skeleton.
{"title":"New Hypercalcified Calcareous Sponges from the Gzhelian Stage of the Moscow Region","authors":"A. E. Davydov, Yu. V. Yashunsky, G. V. Mirantsev, A. A. Krutykh","doi":"10.1134/s0031030123110035","DOIUrl":"https://doi.org/10.1134/s0031030123110035","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A new genus and species of hypercalcified calcareous sponge, <i>Gzhelistella cornigera</i> gen. et sp. nov., is described from the Kosherovo Formation (Gzhelian Stage) of the Moscow region. The new genus is the first representative of hypercalcified calcareous sponges from the Upper Carboniferous with an “inozoan-like” internal structure and a characteristic spicular organization of the skeleton.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767216","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}
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