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First description of scleractinian corals from the Santa Marta and Snow Hill Island(Gamma Member) formations, Upper Cretaceous, James Ross Island, Antarctica

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Advances in Polar Science 2020年第3期31卷 205-214页

作者： Roberto VIDEIRA-SANTOS sandro marcelo scheffler Luiza Corral Martins de Oliveira PONCIANO Luiz Carlos WEINSCHUTZ Rodrigo Giesta FIGUEIREDO Taissa RODRIGUES Juliana Manso SAYAO Douglas Santos RIFF Alexander Wilhelm Armin KELLNER Laboratorio de Paleoinvertebrados Departamento de Geologia e PaleontologiaMuseu NacionalUniversidade Federal do Rio de JaneiroQuinta da Boa Vistas/n20940-040Rio de JaneiroRJBrazil Universidade Federal Rural do Rio de Janeiro BR-465Km 07s/n23890-000SeropedicaRJBrazil Laboratorio de Tafonomia e Paleoecologia Aplicadas–LABTAPHO Departamento de Ciencias Naturais–DCNUniversidade Federal do Estado do Rio de Janeiro–UNIRIOAv.Pasteur45822290-250Rio de JaneiroRJBrasil Centro Paleontologico de Mafra–CENPALEO Universidade do ContestadoAv.Pres.Nereu Ramos107189300-000MafraSCBrazil Departamento de Biologia Universidade Federal do Espirito Santo–UFESAlto Universitario s/nGuararemaAlegreESBrazil Laboratorio de Paleontologia Departamento de Ciências BiologicasCentro de Ciencias Humanas e NaturaisUniversidade Federal do Espirito Santo–UFESAvenida Fernando Ferrari514Goiabeiras29075-910VitoriaESBrazil Laboratorio de Paleobiologia e Microestruturas Nucleo de BiologiaCentro Academico de VitoriaUniversidade Federal de Pernambuco–UFPERua do Alto do Reservatorios/n52050-480Vitoria de Santo AntaoPEBrazil Laboratory of Systematics and Taphonomy of Fossil Vertebrates Departamento de Geologia e PaleontologiaMuseu Nacional/Universidade Federal do Rio de JaneiroQuinta da Boa Vista s/nSao Cristovao20940-040 Rio de JaneiroRJBrazil Laboratorio de Paleontologia Instituto de BiologiaUniversidade Federal de Uberlandiacampus Umuarama38400-902UberlandiaMGBrazil

Antarctic corals are known from the Upper Cretaceous Santa Marta Formation(Santonian–early Campanian)and Gamma Member(late Campanian)of Snow Hill Island Formation(late Campanian–early Maastrichtian)but they have not so far been taxonomically *** describe three corals taxa based on 29 specimens collected in 2007 and 2016 on James Ross Island(northeast of the Antarctic Peninsula).They represent the first formal record of scleractinian corals from the Santa Marta Formation,identified as Caryophylliidae *** Gamma Member of Snow Hill Island Formation,identified as Astreopora *** Fungiacyathus *** family Caryophylliidae and the genus Astreopora were not restricted to the Weddellian Biogeographic Province but the species Fungiacyathus deltoidophorus was endemic to Antarctica during the *** genus Fungiacyathus and the family Caryophylliidae thrive in Antarctica until the present *** occurred in shallower environments during the late Campanian than *** specimens related to Astreopora have yet to be found in Antarctica after the late *** can be explained by the capacity of Fungiacyathus and Caryophyllidae to endure cold waters,since they are asymbiotic *** symbiotic Astreopora sp.,due to its sensitivity to low temperatures,became extinct in this continent as soon as the Antarctic waters began to cool,around the Campanian/*** presence of Astreopora *** Gamma Member of Snow Hill Island Formation may represents the first occurrence of this genus in Antarctica and the oldest record of this genus in the Southern Hemisphere.

关键词： scleractinia taxonomy Campanian James Ross Sub-Basin Antarctica

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