{"title":"双尾目动物的不寻常身体结构:分形分支体","authors":"V. V. Isaeva","doi":"10.1134/s0031030123110060","DOIUrl":null,"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":0.7000,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"An Unusual Body Plan in Bilateria: a Fractal Branching Body\",\"authors\":\"V. V. Isaeva\",\"doi\":\"10.1134/s0031030123110060\",\"DOIUrl\":null,\"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\":0.7000,\"publicationDate\":\"2024-02-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Paleontological Journal\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1134/s0031030123110060\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PALEONTOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Paleontological Journal","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1134/s0031030123110060","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PALEONTOLOGY","Score":null,"Total":0}
An Unusual Body Plan in Bilateria: a Fractal Branching Body
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.
期刊介绍:
Paleontological Journal (Paleontologicheskii zhurnal) is the principal Russian periodical in paleontology. The journal publishes original work on the anatomy, morphology, and taxonomy of fossil organisms, as well as their distribution, ecology, and origin. It also publishes studies on the evolution of organisms, ecosystems, and the biosphere and provides invaluable information on global biostratigraphy with an emphasis on Eastern Europe and Asia.