Palaeoworld最新文献

{"title":"A new fossil record of Adiantum (Pteridaceae) from Oligocene of Qaidam Basin, Northwest China and its palaeoenvironmental implications","authors":"Hong-Yu Chen ,&nbsp;Tao Yang ,&nbsp;Ya Li ,&nbsp;Dieter Uhl ,&nbsp;Lei Han ,&nbsp;Jia-Hao Cai ,&nbsp;Li Zhang ,&nbsp;Yong-Dong Wang ,&nbsp;De-Fei Yan","doi":"10.1016/j.palwor.2024.11.006","DOIUrl":"10.1016/j.palwor.2024.11.006","url":null,"abstract":"<div><div><em>Adiantum</em>, a genus of leptosporangiate ferns, belonging to the Pteridaceae, is characterised by marginal sori, reflexed pseudoindusia, and dichotomous venation. As a large and widespread genus, <em>Adiantum</em> includes about 225 extant species and a nearly worldwide distribution, but its fossil record is rather scarce. Here, we describe a new fossil species of <em>Adiantum</em> as <em>A</em>. <em>qaidamense</em> Chen and Yan, n. sp. based on fossil fertile and sterile pinnules from the Oligocene Shangganchaigou Formation in the western Qaidam Basin, Qinghai Province, China. These fossils are mainly characterised by three clearly marginal sori covered by orbicular or oblong pseudoindusia. Both morphological comparisons and cluster analysis indicate that <em>A</em>. <em>qaidamense</em> can be distinguished from previously known species, and <em>A</em>. <em>capillus-junonis</em> seems to be morphologically the most similar extant species. The discovery of <em>A</em>. <em>qaidamense</em> represents an unequivocal macrofossil record of <em>Adiantum</em> in China, and improves our understanding of the palaeogeographic distribution of the genus and the species richness of the Oligocene flora in the western Qaidam Basin. According to the habitats of extant <em>Adiantum</em>, the existence of <em>A</em>. <em>qaidamense</em> probably indicates that there was a flourishing forest growing on probable calcareous soil with abundant water availability during the Oligocene in the western Qaidam Basin.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 100898"},"PeriodicalIF":1.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684502","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}

{"title":"Upper Cretaceous (Cenomanian–lower Campanian) nannofossils and sequence stratigraphy of southwestern Crimea","authors":"Ekaterina Shcherbinina,&nbsp;Yuri Gavrilov","doi":"10.1016/j.palwor.2024.11.010","DOIUrl":"10.1016/j.palwor.2024.11.010","url":null,"abstract":"<div><div>The first high-resolution study of the Cenomanian to lower Campanian calcareous nannofossils of two most continuous but poor in macrofossils sections of southwestern Crimea allowed the detailed division of these successions on the basis of standard nannofossil zonations and the correlation with Tethyan and Boreal Upper Cretaceous. After initial Cenomanian sea-level fall, nannofossil assemblages increase their abundance and taxonomic diversity toward the end of Cenomanian. The most of the Cenomanian bioevents are recognised in the sedimentary record. The Cenomanian/Turonian transition is the most stratigraphically intricate interval in the Late Cretaceous Crimean basin. The lowest occurrences (LOs) of <em>Cylindralithus biarcus</em>, <em>Quadrum intermedium</em>, <em>Eprolithus octopetalus</em>, <em>Ahmuellerella octoradiata</em> are identified in the upper Cenomanian. The highest occurrences (HOs) of some stratigraphically important for this time span taxa like <em>Corollithion kennedyi</em>, <em>Cretarhabdus striatus</em> and <em>Axopodorhabdus albianus</em> are found significantly above the levels defined as relevant subzonal boundaries (UC3e, UC4b and UC5b, respectively). The TOC-rich sediments corresponding to Bonarelli Level (OAE2) is intercalated in the upper part of the upper Cenomanian limestones (undivided interval of UC5c-UC6a subzone/zone). <em>Helenea chiastia</em> is scarce in the studied succession and its HO cannot be used for definition of zonal boundary (UC6) and the base of Turonian. The most reliable bioevent closest to the Cenomanian/Turonian boundary in this basin is the LO of <em>Eprolithus moratus</em> (base of UC6b subzone). The middle Turonian to lower Campanian nannofossil assemblages display the succession of the main bioevents similar to those in Tethyan basin, but show earlier LOs of <em>Micula</em> and <em>Reinhardtites</em> in the middle Turonian.</div><div>Nannofossil biostratigraphy revealed the stratigraphic range of hiatuses in this sedimentary record. Being combined with the levels of the major facies changes, these levels enabled the recognition of five Cenomanian and four Turonian sequence boundaries consistent with the sequence stratigraphy established for Europe. Two sharp erosional surfaces occurred in the upper part of the studied succession correspond to the Coniacian KCo1 and Santonian KSa2 sequences.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 100902"},"PeriodicalIF":1.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684508","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}

{"title":"High-precision age constraint for the Xiyingzi Bed of the Jiufotang Formation in western Liaoning, Northeast China","authors":"Li-Jun Zhang ,&nbsp;Si-Yu Song ,&nbsp;Shu-An Ji ,&nbsp;Su-Chin Chang ,&nbsp;Jahandar Ramezani ,&nbsp;Fei Gao ,&nbsp;Bo Wang ,&nbsp;Hai-Chun Zhang ,&nbsp;Da-Ran Zheng","doi":"10.1016/j.palwor.2024.11.009","DOIUrl":"10.1016/j.palwor.2024.11.009","url":null,"abstract":"<div><div>The Jehol Biota includes exceptionally well-preserved fossils that are major components of Early Cretaceous land ecosystems. The youngest example of the Jehol Biota occurs in the Jiufotang Formation, which potentially records palaeoenvironmental factors triggering evolutionary turnover. However, the lack of stratigraphic correlations and uncertain age horizons for many fossil taxa lead to conflicting interpretations of events. This study describes a new significant fossiliferous bed (Xiyingzi Bed) from the upper Jiufotang Formation of the Baomayingzi-Yuanjiawa outcrop in western Liaoning, Northeast China. High-precision CA-ID-TIMS U-Pb analysis of a tuff sample from the Xiyingzi Bed provides an age of 121.272 ± 0.040/0.068/0.15 Ma, representing the first reliable age for the upper Jiufotang Formation in western Liaoning.</div><div>Vertebrate fossils preliminarily reported from this bed include the confuciusornithid and enantiornithine birds, the istiodactylid pterosaur, the non-hadrosaurid iguanodontian dinosaur, the long-necked choristoderan reptiles, the sinemydid turtles, and the polyodontid and sinamiid fish. These fossils were previously reported from the lower horizons, indicating stable development of the late Jehol Biota. New results from the Xiyingzi Bed provides a glimpse of the late Jehol biota before transforming into a typical mid-Cretaceous biota in western Liaoning. Systematic biostratigraphic and chronostratigraphic analysis of the Xiyingzi Bed helps the evolutionary interpretations of the late Jehol Biota and the correlation of the Jiufotang Formation within different basins of western Liaoning.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 100901"},"PeriodicalIF":1.7,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684928","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}

{"title":"Glabrobournonia Morris and Skelton (Rudist, Bivalvia) from the Campanian–Maastrichtian of Türkiye: Taxonomy, palaeoecology and palaeobiogeography","authors":"Sacit Özer","doi":"10.1016/j.palwor.2024.11.003","DOIUrl":"10.1016/j.palwor.2024.11.003","url":null,"abstract":"<div><div>A re-examination of the specimens described as <em>Bournonia anatolica</em> Özer and <em>Bournonia</em> sp. from central and southeastern Anatolia, Türkiye reveals that they have diagnostic characteristics of the genus <em>Glabrobournonia</em> Morris and Skelton. New rudist material from the middle Campanian to late Maastrichtian mixed siliciclastic-carbonate sequences in the Sakarya Zone (Eastern and Central Pontides), in the east of the Anatolid–Tauride Block and in southeastern Anatolia (north of the Arabian Platform) in Türkiye also showed the occurrence of <em>Glabrobournonia anatolica</em> (Özer) and <em>Glabrobournonia arabica</em> Morris and Skelton. <em>Glabrobournonia anatolica</em> is characterised by a large, rectangular right valve with pronounced growth lamellae, a salient ventral carina and interband, a less salient dorsal carina, a concave indentation anterior band, a slightly concave posterior band and broad and smooth anterior surface as well as the absence of radial ribbing and ligamentary infolding. <em>Glabrobournonia arabica</em> has the diagnostic features of the species, such as small valves, conical right valves with a smooth surface, ventral and dorsal carinae and two concave indentations of anterior and posterior bands separated by an interband. The palaeoecological characteristics of these lateral clinger morphotypes are presented according to growth geometries. For the cosmopolitan genus <em>Glabrobournonia</em>, two main migration routes have been proposed for the Campanian–Maastrichtian time: one along the southern margin of the Tethys from the United Arab Emirates–Oman border region to the Zagros (Iran) and southeastern Anatolia, connecting to the northern margin of the Tethys to the Anatolid–Tauride Block and the Sakarya Zone in Türkiye, and another from the United Arab Emirates–Oman border region to the Zagros Zone (Iran) and the Tarim Basin, connecting the northern and southern margins of the eastern Tethys.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 100895"},"PeriodicalIF":1.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684926","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}

{"title":"Coniferous woods from the Albian (Piedra Clavada Formation) of Argentine Patagonia","authors":"Cosme F. Rombola ,&nbsp;Roberto R. Pujana ,&nbsp;Daniela P. Ruiz ,&nbsp;Inés Aramendía","doi":"10.1016/j.palwor.2024.11.004","DOIUrl":"10.1016/j.palwor.2024.11.004","url":null,"abstract":"<div><div>Five samples of silicified fossil woods were collected from the Lower Cretaceous Piedra Clavada Formation, Santa Cruz Province, Argentina. The preservation of the fossil woods varies. Two very poorly preserved specimens are classified as “indeterminate conifers”. Based on the wood anatomy of the remaining specimens, we identified two taxa: <em>Brachyoxylon patagonicum</em> (one specimen), possibly related to the extinct conifer family Hirmeriellaceae, and cf. <em>Brachyoxylon</em>/<em>Agathoxylon</em> (two specimens), possibly related to the Hirmeriellaceae or the Araucariaceae. All samples have distinct growth ring boundaries, indicating annual seasonality. Furthermore, the curvature of the rings and the minimum estimated diameter suggest that the woods came from mature trees. Decay patterns resembling those induced by contemporary xylophagous fungi were identified in one specimen. The presence of fossil woods possibly related to the Hirmeriellaceae and Araucariaceae in the Piedra Clavada Formation is consistent with previous palynological studies of this stratigraphic unit. These records support the dominance of conifers in the Early Cretaceous forests of Argentine Patagonia.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 100896"},"PeriodicalIF":1.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684929","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}

{"title":"First late Silurian (Ludfordian–Pridoli?) brachiopods from Iran","authors":"Leonid E. Popov ,&nbsp;Mansoureh Ghobadi Pour ,&nbsp;Tatyana L. Modzalevskaya ,&nbsp;Vachik Hairapetian","doi":"10.1016/j.palwor.2024.11.002","DOIUrl":"10.1016/j.palwor.2024.11.002","url":null,"abstract":"<div><div>Ludlow to Pridoli? rhynchonellate brachiopods, previously unknown in Iran, are described from the upper Dahaneh-Kalut Formation, outcropping in the Derenjal Mountains on the northern margin of the East-Central Iranian platform. The brachiopod faunas comprise eight species assigned to eight genera including <em>Ancillotoechia bicostata</em> n. sp., <em>Isorthis</em> (<em>Ovalella</em>) <em>equimulticostellata</em> n. sp., <em>Protathyris golshanensis</em> n. sp., and <em>Macropleura kuhestanensis</em> n. sp. The Ludfordian age of these taxa is supported by the occurrences of the conodonts <em>Ozarkodina crispa</em> (Walliser) and <em>Ozarkodina</em> sp. cf. <em>O</em>. <em>snajdri</em> (Walliser). Three low richness and high abundance brachiopod communities are recognised, all of which inhabited a shallow-water carbonate shelf within the Benthic Assemblages 2 and 3. Despite the prevalence of cosmopolitan genera, the Iranian Ludfordian–Pridoli? brachiopod faunas show little interaction with geographically closest contemporaneous faunas of the Australian sector of Gondwana and South China plate.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 4","pages":"Article 100894"},"PeriodicalIF":1.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684927","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}

{"title":"Cynometroxylon aegyptiacum n. sp. (Fabaceae-Detarioideae) from the Miocene of Egypt with palaeoclimatic and biogeographic insights","authors":"Zainab M. El-Noamani,&nbsp;Nermeen A. Ziada","doi":"10.1016/j.palwor.2024.10.007","DOIUrl":"10.1016/j.palwor.2024.10.007","url":null,"abstract":"<div><div>A new morphospecies of <em>Cynometroxylon</em> is described from the early Miocene deposits of the Gebel El-Khashab Formation exposed along the Cairo-Bahariya desert road in the north Western Desert of Egypt. It is compared with the 13 currently recognized fossil wood species of <em>Cynometroxylon</em>/<em>Cynometra</em> recorded worldwide. The characteristics of this fossil wood align with those typical of the non-seasonal tropical climate during the Miocene period, indicating its habitat at that time. This habitat is consistent with that of some living species of its analogue <em>Cynometra</em>. Upon reviewing the worldwide biogeography of the genus, its extensive distribution in Africa and Asia was observed. Furthermore, the biogeography of the subfamily Detarioideae was compiled, tracing its evolutionary history back to Africa. This confirms the possibility that family Fabaceae likely originated in Africa during the Late Cretaceous to early Paleogene, with subsequent dispersal into Asia and South America. The present record is indicative of a subtropical to warm tropical climate which prevailed in the Miocene of Egypt.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100892"},"PeriodicalIF":1.7,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135698","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}

{"title":"The microcoprolites Favreina iranensis from the Upper Jurassic Mozduran Formation, Kopeh Dagh basin, Iran","authors":"Maryam Motamedalshariati ,&nbsp;Diego A. Kietzmann ,&nbsp;Farokh Ghaemi","doi":"10.1016/j.palwor.2024.10.006","DOIUrl":"10.1016/j.palwor.2024.10.006","url":null,"abstract":"<div><div>The present study reports for the first time, the microcoprolites from the Mozduran Formation (Kimmeridgian–Tithonian) in the eastern part of the Kopeh Dagh sedimentary basin, in the Bazangan region of northern Iran. Fifty-two microscopic thin sections were examined, and contain crustacean microcoprolites belonging to <em>Favreina iranensis</em> Dalvand, Ashrafzadeh and Ahmadi. This occurrence expands the knowledge of this species which was originally described based on a single specimen. The association of <em>F</em>. <em>iranensis</em> with miliolid foraminiferans and sponge spicules suggests that the upper part of the Mozduran Formation was deposited under shallow-water marine conditions.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100891"},"PeriodicalIF":1.7,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095991","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}

{"title":"Dimorphism in family Editiidae Knüpfer, 1967 (Ostracoda)","authors":"Dmitry B. Sobolev","doi":"10.1016/j.palwor.2024.09.009","DOIUrl":"10.1016/j.palwor.2024.09.009","url":null,"abstract":"<div><div>This paper reports the peculiarities of dimorphism based on some early representatives of the family Editiidae <span><span>Knüpfer, 1967</span></span>. A new genus <em>Blumeditia</em> n. gen., four new species (<em>Blumeditia eleganta</em> n.gen. n. sp., <em>Blumeditia pretzella</em> n. gen. n. sp., <em>Blumeditia auctus</em> n. gen. n. sp., <em>Adeditia tkachovae</em> n. sp.), one new subspecies (<em>Proeditia auriculata dimorpha</em> n. subsp.) and six taxa in open nomenclature (<em>Proeditia</em> aff. <em>cristata</em> <span><span>Bushmina, 1979</span></span>, <em>Proeditia auriculata</em> subsp. 1, <em>Proeditia auriculata</em> subsp. 2, <em>Proeditia</em>? sp. 2, <em>Proeditia</em>? sp. 3, and <em>Blumeditia</em> aff. <em>furcata</em> (<span><span>Sobolev, 1998</span></span>)) are systematically described from deposits of the Famennian–Tournaisian shelf of northeastern Laurussia (North and Subpolar Urals, southern part of the Chernyshev Ridge, Russia). The diagnoses of the genera <em>Adeditia</em> <span><span>Gramm and Egorov, 1986</span></span> and <em>Proeditia</em> <span><span>Bushmina, 1979</span></span> are revised. The stratigraphic ranges of the genera <em>Proeditia</em> <span><span>Bushmina, 1979</span></span>, <em>Blumeditia</em> n. gen., and <em>Adeditia</em> <span><span>Gramm and Egorov, 1986</span></span> (20 taxa) are shown. Possible phylogenetic relationships of the studied taxa are presented. The three taxa belonging to the closely related genera <em>Adeditia</em> <span><span>Gramm and Egorov, 1986</span></span>, <em>Blumeditia</em> n. gen., and <em>Proeditia</em> <span><span>Bushmina, 1979</span></span> show dimorphic differences of the extradomiciliar supratype that have not previously been documented in members of the family Editiidae <span><span>Knüpfer, 1967</span></span>.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100889"},"PeriodicalIF":1.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143273218","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}

{"title":"Fossilized soft tissues in tentaculitids from the Upper Devonian of Armenia: Towards solving the mystery of their phylogenetic affinities","authors":"Olev Vinn ,&nbsp;Tamara Hambardzumyan ,&nbsp;Elena Temereva ,&nbsp;Arayik Grigoryan ,&nbsp;Meline Tsatryan ,&nbsp;Lusine Harutyunyan ,&nbsp;Karine Asatryan ,&nbsp;Vahram Serobyan","doi":"10.1016/j.palwor.2024.10.004","DOIUrl":"10.1016/j.palwor.2024.10.004","url":null,"abstract":"<div><div>The tentaculitids represent a significant and diverse group of mysterious fossils found in Palaeozoic strata. Their biology and evolutionary relationships remain poorly understood due to limited information about their soft body anatomy. The discovery of fossilized soft tissues in tentaculitids from the Upper Devonian of Armenia helps to resolve the long-standing mystery of tentaculitid phylogenetic affinities. The thick bundles of phosphatic bars in the tentaculitid interior closely resemble the musculature of several tubicolous invertebrates, such as phoronids and bryozoans. Based on this similarity, we interpret these structures as fossilized muscles of the tentaculitid animal. The attachment of tentaculitid body muscles in a honeycomb pattern to the body wall is unlike that of any mollusc. Based on this muscle arrangement, molluscan affinities of tentaculitoids can be refuted. The muscle arrangement in tentaculitids is more akin to that of bryozoans than to phoronids. Presumably, tentaculitids and bryozoans shared a common ancestor. This ancestor was probably a solitary animal, with coloniality emerging later in the bryozoan branch of the phylogenetic tree. Alternatively, tentaculitoids might have evolved from a bryozoan-like ancestor by losing their coloniality.</div></div>","PeriodicalId":48708,"journal":{"name":"Palaeoworld","volume":"34 3","pages":"Article 100888"},"PeriodicalIF":1.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143095993","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}