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Legless and Eyeless Animals 无腿无眼动物
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-13 DOI: 10.1134/s0031030123110023
A. M. Beregova, M. A. Nikitin, K. V. Mikhailov, B. D. Efeykin
{"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":"16 1","pages":""},"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}
引用次数: 0
The Main Line of the Evolution of Articulata—From Polychaetes to Insects 节肢动物进化的主线--从多毛类到昆虫
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-13 DOI: 10.1134/s0031030123110126
D. E. Shcherbakov
{"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":"22 1","pages":""},"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}
引用次数: 0
Unravelling the Evolution of Bryozoan Larvae 揭开贝类幼虫进化的神秘面纱
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-13 DOI: 10.1134/s0031030123110072
O. N. Kotenko, A. N. Ostrovsky
{"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":"35 1","pages":""},"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}
引用次数: 0
CHAPTER III. SPATIAL DIFFERENTIATION OF TETRAPOD COMMUNITIES OF EUROPEAN RUSSIA IN THE EARLY TRIASSIC 第 III 章.三叠纪早期欧洲俄罗斯四足动物群落的空间分异
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-13 DOI: 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":"308 1","pages":""},"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}
引用次数: 0
Evolutionary-Ecological Aspects of the Origin and Early Diversification of Multicellular Animals 多细胞动物起源和早期多样化的进化-生态学问题
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-13 DOI: 10.1134/s0031030123110114
S. V. Rozhnov
{"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":"223 1","pages":""},"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}
引用次数: 0
An Unusual Body Plan in Bilateria: a Fractal Branching Body 双尾目动物的不寻常身体结构：分形分支体
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-13 DOI: 10.1134/s0031030123110060
V. V. Isaeva
{"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":"1 1","pages":""},"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}
引用次数: 0
Aberrant Arm Branches in Pennsylvanian Crinoids from the Moscow Region 莫斯科地区宾夕法尼亚巨壳类动物的异常臂枝
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-13 DOI: 10.1134/s0031030123110084
G. V. Mirantsev
{"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":"16 1","pages":""},"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}
引用次数: 0
New Hypercalcified Calcareous Sponges from the Gzhelian Stage of the Moscow Region 莫斯科地区格扎赫勒阶段出土的新的高钙化石灰质海绵体
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-13 DOI: 10.1134/s0031030123110035
A. E. Davydov, Yu. V. Yashunsky, G. V. Mirantsev, A. A. Krutykh
{"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":"196 1","pages":""},"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}
引用次数: 0
Bioerosion Structures on Benthic Foraminiferal Tests from the Upper Cretaceous and Paleogene of Western Siberia 西西伯利亚上白垩统和古近纪底栖有孔虫试样的生物侵蚀结构
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-06 DOI: 10.1134/s0031030123100064
Ya. S. Trubin, V. A. Marinov, I. N. Kosenko, P. V. Smirnov, A. A. Novoselov
{"title":"Bioerosion Structures on Benthic Foraminiferal Tests from the Upper Cretaceous and Paleogene of Western Siberia","authors":"Ya. S. Trubin, V. A. Marinov, I. N. Kosenko, P. V. Smirnov, A. A. Novoselov","doi":"10.1134/s0031030123100064","DOIUrl":"https://doi.org/10.1134/s0031030123100064","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Bioerosion structures, including holes, pits, and grooves, on the surface of benthic foraminiferal tests from the Upper Cretaceous and Paleogene of Western Siberia are studied. Their morphology is examined, their possible origin and the paleogeographic and stratigraphic distribution in sections representing marine basins of Western Siberia are discussed. The ichnospecies assemblage studied includes <i>Oichnus simplex</i> Bromley, 1981, <i>O. paraboloides</i> Bromley, 1981, <i>O. gradatus</i> Nielsen et Nielsen, 2001, and <i>O. ovalis</i> Bromley, 1993.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":"15 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767545","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
Brachiopods and Biostratigraphy of the Permian Marine Boreal Basin of Mongolia 蒙古二叠纪海洋北方盆地的腕足动物和生物地层学
IF 0.6 4区 地球科学
Paleontological Journal Pub Date : 2024-02-06 DOI: 10.1134/s0031030123100027
I. N. Manankov
{"title":"Brachiopods and Biostratigraphy of the Permian Marine Boreal Basin of Mongolia","authors":"I. N. Manankov","doi":"10.1134/s0031030123100027","DOIUrl":"https://doi.org/10.1134/s0031030123100027","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>As a result of the collection and study of brachiopods from the Permian deposits of the Boreal Khangai-Khentei marine basin of Mongolia, during the 50–year work of the Joint Russian-Mongolian paleontological expedition, new data were obtained on the taxonomic composition, stratigraphic and geographical distribution of the identified Permian brachiopod assemblages; the proposed correlation schemes and biogeographic reconstructions are used in geological work in the adjacent territories of Russia and China.</p>","PeriodicalId":19816,"journal":{"name":"Paleontological Journal","volume":"17 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767314","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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