A kralodvorian (Upper katin, upper ordovician) benethic association from the ferradosa formation (central Portugal) and its significance for the redefinition and subdivision of the kralodvorian stage

J. Colmenar; S. Pereira; M. Pires; C. Marques da Silva; A.A. Sá; T.P. Young

doi:10.3140/bull.geosci.l643

A kralodvorian (Upper katin, upper ordovician) benethic association from the ferradosa formation (central Portugal) and its significance for the redefinition and subdivision of the kralodvorian stage

J. Colmenar, S. Pereira, M. Pires, C. Marques da Silva, A.A. Sá, T.P. Young

3 Citations (Scopus)

Abstract

A new upper Katian (Kralodvorian Regional Stage) benthic association from the Riba de Cima Member of the Ferradosa Formation, Portugal, is described. It is dominated by bryozoans and echinoderms but brachiopods and trilobites are also present. More than 20 species of brachiopods, nine of trilobites and eight of echinoderms have been identified in the four 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 uppermost Rosan Formation (Armorican Massif, France). Porambonites dreyfussi Havlíček, 1981 is also reported in this paper for the first time besides its type horizon in the upper part of the Kralodvorian Gabian Formation (Montagne Noire, 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), whose referred species are also present in the upper Berounian–Kralodvorian Portixeddu Formation in Sardinia. The record of “Ceraurinus” meridianus (Hammann, 1992), “Bumastus” aff. commodus Apollonov, 1980 and Amphoriops cf. inflatus represent the first occurrence of these genera-groups in Portugal. These records are important 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 that time. In addition, some of the brachiopod occurrences with more restricted stratigraphical ranges provide invaluable tools for enabling more precise subdivision of the Kralodvorian regional stage.

Original language	English
Journal	Bulletin of Geosciences
Volume	92
Issue number	4
Pages (from-to)	443-464
Number of pages	22
ISSN	1214-1119
DOIs	https://doi.org/10.3140/bull.geosci.l643
Publication status	Published - 2017

Keywords

benthos
biostratigraphy
brachiopod
bryozoan
echinoderm
Gondwana
Ordovician
syncline
trilobite, Armorican Massif
Bretagne
France
Portugal, Brachiopoda
Bryozoa
Echinodermata
Trilobitomorpha

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3140/bull.geosci.l643

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Colmenar, J., Pereira, S., Pires, M., Marques da Silva, C., Sá, A. A., & Young, T. P. (2017). A kralodvorian (Upper katin, upper ordovician) benethic association from the ferradosa formation (central Portugal) and its significance for the redefinition and subdivision of the kralodvorian stage. Bulletin of Geosciences, 92(4), 443-464. https://doi.org/10.3140/bull.geosci.l643

A kralodvorian (Upper katin, upper ordovician) benethic association from the ferradosa formation (central Portugal) and its significance for the redefinition and subdivision of the kralodvorian stage. / Colmenar, J.; Pereira, S.; Pires, M. et al.

In: Bulletin of Geosciences, Vol. 92, No. 4, 2017, p. 443-464.

Research output: Contribution to journal › Journal article › Research › peer-review

Colmenar, J, Pereira, S, Pires, M, Marques da Silva, C, Sá, AA & Young, TP 2017, 'A kralodvorian (Upper katin, upper ordovician) benethic association from the ferradosa formation (central Portugal) and its significance for the redefinition and subdivision of the kralodvorian stage', Bulletin of Geosciences, vol. 92, no. 4, pp. 443-464. https://doi.org/10.3140/bull.geosci.l643

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title = "A kralodvorian (Upper katin, upper ordovician) benethic association from the ferradosa formation (central Portugal) and its significance for the redefinition and subdivision of the kralodvorian stage",

abstract = "A new upper Katian (Kralodvorian Regional Stage) benthic association from the Riba de Cima Member of the Ferradosa Formation, Portugal, is described. It is dominated by bryozoans and echinoderms but brachiopods and trilobites are also present. More than 20 species of brachiopods, nine of trilobites and eight of echinoderms have been identified in the four studied localities. Among the brachiopods Kjaerina (Villasina) meloui Colmenar, 2016, Dolerorthis abeirensis M{\'e}lou, 1990 and Bicuspina cf. armoricana M{\'e}lou, 1990 are significant. These species were previously recorded only in the uppermost Rosan Formation (Armorican Massif, France). Porambonites dreyfussi Havl{\'i}{\v c}ek, 1981 is also reported in this paper for the first time besides its type horizon in the upper part of the Kralodvorian Gabian Formation (Montagne Noire, 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), whose referred species are also present in the upper Berounian–Kralodvorian Portixeddu Formation in Sardinia. The record of “Ceraurinus” meridianus (Hammann, 1992), “Bumastus” aff. commodus Apollonov, 1980 and Amphoriops cf. inflatus represent the first occurrence of these genera-groups in Portugal. These records are important 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 that time. In addition, some of the brachiopod occurrences with more restricted stratigraphical ranges provide invaluable tools for enabling more precise subdivision of the Kralodvorian regional stage.",

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T1 - A kralodvorian (Upper katin, upper ordovician) benethic association from the ferradosa formation (central Portugal) and its significance for the redefinition and subdivision of the kralodvorian stage

AU - Colmenar, J.

AU - Pereira, S.

AU - Pires, M.

AU - Marques da Silva, C.

AU - Sá, A.A.

AU - Young, T.P.

N1 - cited By 2

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N2 - A new upper Katian (Kralodvorian Regional Stage) benthic association from the Riba de Cima Member of the Ferradosa Formation, Portugal, is described. It is dominated by bryozoans and echinoderms but brachiopods and trilobites are also present. More than 20 species of brachiopods, nine of trilobites and eight of echinoderms have been identified in the four 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 uppermost Rosan Formation (Armorican Massif, France). Porambonites dreyfussi Havlíček, 1981 is also reported in this paper for the first time besides its type horizon in the upper part of the Kralodvorian Gabian Formation (Montagne Noire, 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), whose referred species are also present in the upper Berounian–Kralodvorian Portixeddu Formation in Sardinia. The record of “Ceraurinus” meridianus (Hammann, 1992), “Bumastus” aff. commodus Apollonov, 1980 and Amphoriops cf. inflatus represent the first occurrence of these genera-groups in Portugal. These records are important 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 that time. In addition, some of the brachiopod occurrences with more restricted stratigraphical ranges provide invaluable tools for enabling more precise subdivision of the Kralodvorian regional stage.

AB - A new upper Katian (Kralodvorian Regional Stage) benthic association from the Riba de Cima Member of the Ferradosa Formation, Portugal, is described. It is dominated by bryozoans and echinoderms but brachiopods and trilobites are also present. More than 20 species of brachiopods, nine of trilobites and eight of echinoderms have been identified in the four 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 uppermost Rosan Formation (Armorican Massif, France). Porambonites dreyfussi Havlíček, 1981 is also reported in this paper for the first time besides its type horizon in the upper part of the Kralodvorian Gabian Formation (Montagne Noire, 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), whose referred species are also present in the upper Berounian–Kralodvorian Portixeddu Formation in Sardinia. The record of “Ceraurinus” meridianus (Hammann, 1992), “Bumastus” aff. commodus Apollonov, 1980 and Amphoriops cf. inflatus represent the first occurrence of these genera-groups in Portugal. These records are important 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 that time. In addition, some of the brachiopod occurrences with more restricted stratigraphical ranges provide invaluable tools for enabling more precise subdivision of the Kralodvorian regional stage.

KW - benthos

KW - biostratigraphy

KW - brachiopod

KW - bryozoan

KW - echinoderm

KW - Gondwana

KW - Ordovician

KW - syncline

KW - trilobite, Armorican Massif

KW - Bretagne

KW - France

KW - Portugal, Brachiopoda

KW - Bryozoa

KW - Echinodermata

KW - Trilobitomorpha

U2 - 10.3140/bull.geosci.l643

DO - 10.3140/bull.geosci.l643

M3 - Journal article

SN - 1214-1119

VL - 92

SP - 443

EP - 464

JO - Bulletin of Geosciences

JF - Bulletin of Geosciences

IS - 4

ER -

A kralodvorian (Upper katin, upper ordovician) benethic association from the ferradosa formation (central Portugal) and its significance for the redefinition and subdivision of the kralodvorian stage

Abstract

Keywords

UN SDGs

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