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

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 

机构地区：[1]Laboratorio de Paleoinvertebrados,Departamento de Geologia e Paleontologia,Museu Nacional,Universidade Federal do Rio de Janeiro,Quinta da Boa Vista,s/n,20940-040,Rio de Janeiro,RJ,Brazil [2]Universidade Federal Rural do Rio de Janeiro,BR-465,Km 07,s/n,23890-000,Seropedica,RJ,Brazil [3]Laboratorio de Tafonomia e Paleoecologia Aplicadas–LABTAPHO,Departamento de Ciencias Naturais–DCN,Universidade Federal do Estado do Rio de Janeiro–UNIRIO,Av.Pasteur,458,22290-250,Rio de Janeiro,RJ,Brasil [4]Centro Paleontologico de Mafra–CENPALEO,Universidade do Contestado,Av.Pres.Nereu Ramos,1071,89300-000,Mafra,SC,Brazil [5]Departamento de Biologia,Universidade Federal do Espirito Santo–UFES,Alto Universitario s/n,Guararema,Alegre,ES,Brazil [6]Laboratorio de Paleontologia,Departamento de Ciências Biologicas,Centro de Ciencias Humanas e Naturais,Universidade Federal do Espirito Santo–UFES,Avenida Fernando Ferrari,514,Goiabeiras,29075-910,Vitoria,ES,Brazil [7]Laboratorio de Paleobiologia e Microestruturas,Nucleo de Biologia,Centro Academico de Vitoria,Universidade Federal de Pernambuco–UFPE,Rua do Alto do Reservatorio,s/n,52050-480,Vitoria de Santo Antao,PE,Brazil [8]Laboratory of Systematics and Taphonomy of Fossil Vertebrates,Departamento de Geologia e Paleontologia,Museu Nacional/Universidade Federal do Rio de Janeiro,Quinta da Boa Vista s/n,Sao Cristovao,20940-040 Rio de Janeiro,RJ,Brazil [9]Laboratorio de Paleontologia,Instituto de Biologia,Universidade Federal de Uberlandia,campus Umuarama,38400-902,Uberlandia,MG,Brazil

出　　处：《Advances in Polar Science》2020年第3期205-214,共10页极地科学进展（英文版）

基　　金：supported by Programa Antartico Brasileiro-PROANTAR(CNPq#557347/2005-0;#407670/2013-0 and#442677/2018-9 to AWAK);the Conselho Nacional de Desenvolvimento Científico e Tecnologico(CNPq#370345/2017-7 to RVS;CNPq 312360/2018-5 to TR;CNPq#311715/2017-6 to JMS and CNPq#420687/2016-5;#313461/2018-0 to AWAK);Fundacao Carlos Chagas Filho de AmparoaPesquisa do Estado do Rio de Janeiro(FAPERJ#E-26/202.905/2018 to AWAK;FAPERJ E-26/200.110/2019 to SMS)for the funding of this research。

摘　　要：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 described.We 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 indet.and Gamma Member of Snow Hill Island Formation,identified as Astreopora sp.and Fungiacyathus deltoidophorus.The 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 Cretaceous.The genus Fungiacyathus and the family Caryophylliidae thrive in Antarctica until the present day.Fungiacyathus occurred in shallower environments during the late Campanian than today.No specimens related to Astreopora have yet to be found in Antarctica after the late Campanian.This can be explained by the capacity of Fungiacyathus and Caryophyllidae to endure cold waters,since they are asymbiotic corals.The 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/Maastrichtian.The presence of Astreopora sp.in 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 

分 类 号：Q178[生物学—水生生物学]