Tipo
Artigos em Revista
Tipo de Documento
Artigo Completo
Título
A Kralodvorian (upper Katian, Upper Ordovician) benthic association from the Ferradosa Formation (central Portugal) and its significance for the redefinition and subdivision of the Kralodvorian Stage
Participantes na publicação
J. Colmenar (Author)
S. Pereira (Author)
M. Pires (Author)
C. Marques da Silva (Author)
Dep. Geologia
IDL
A.A. Sá (Author)
T.P. Young (Author)
Resumo
AnewupperKatian(KralodvorianRegionalStage)benthicassociationfromtheRibadeCimaMemberoftheFerradosa Formation,Portugal,isdescribed.Itisdominatedbybryozoansandechinodermsbutbrachiopodsandtrilobitesarealso present.Morethan20speciesofbrachiopods,nineoftrilobitesandeightofechinodermshavebeenidentifiedinthefour studied localities. Among the brachiopods Kjaerina (Villasina) meloui Colmenar, 2016, Dolerorthis abeirensis Mélou, 1990 and Bicuspina cf. armoricana Mélou, 1990 are significant. These species were previously recorded only in the uppermostRosanFormation(ArmoricanMassif,France).PorambonitesdreyfussiHavlí?ek,1981isalsoreportedinthis paperforthefirsttimebesidesitstypehorizonintheupperpartoftheKralodvorianGabianFormation(MontagneNoire, France). Most of the identified trilobite taxa were previously documented only in the Kralodvorian Cystoid Limestone Formation (Iberian Chains, Spain), except Parillaenus? cf. creber Hammann, 1992 and Amphoriops cf. inflatus (Hammann,1992),whosereferredspeciesarealsopresentintheupperBerounian–KralodvorianPortixedduFormation in Sardinia. The record of “Ceraurinus” meridianus (Hammann, 1992), “Bumastus” aff. commodus Apollonov, 1980 andAmphoriopscf.inflatusrepresentthefirstoccurrenceofthesegenera-groupsinPortugal.Theserecordsareimportant additions to the knowledge of the Portuguese Late Ordovician benthic marine communities, providing crucial new data to constrain the biostratigraphy of the Riba de Cima Member and the palaeogeographical setting of this region at thattime.Inaddition,someofthebrachiopodoccurrenceswithmorerestrictedstratigraphicalrangesprovideinvaluable toolsforenablingmoreprecisesubdivisionoftheKralodvorianregionalstage.•Keywords:SouthGondwana,Ribade Cima Member, Buçaco Syncline, upper Katian, Nicolella Fauna.\\\\\\\\n
Data de Submissão/Pedido
2016-10-28
Data de Aceitação
2017-07-17
Data de Publicação
2017-12-18
Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Suporte
Bulletin of Geosciences
Identificadores da Publicação
ISSN - 1802-8225
Local
Prague, Czech Republic
Editora
Czech Geological Survey
Número de Páginas
21
Página Inicial
443
Página Final
464
Identificadores do Documento
DOI -
https://doi.org/10.3140/bull.geosci.1643
Identificadores de Qualidade
SCIMAGO Q1 (2017) - 0.743 - Earth and Planetary Sciences (miscellaneous)
SCIMAGO Q2 (2017) - 0.743 - Environmental Science (miscellaneous)
SCOPUS Q2 (2017) - 0.743 - General Earth and Planetary Sciences
SCOPUS Q2 (2017) - 0.743 - General Environmental Science