A Middle Ordovician conodont faunule from the Tetagouche Group, Camel Back Mountain, New Brunswick

Kennedy, David Jr.; Barnes, Christopher R.; Uyeno, T. T.

doi:10.1139/e79-049

Cited by 36 publications

(15 citation statements)

References 3 publications

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“…These species include Decoriconus costulatus (Rexroad, ), Figure M–Q; Drepanoistodus cf. D. suberectus (Branson and Mehl, ); Panderodus gracilis (Branson and Mehl, ), Figure N; Protopanderodus liripipus Kennedy, Barnes and Uyeno, , Figure A–C; Scabbardella altipes (Henningsmoen, ), Figure I–M; Strachanognathus parvus Rhodes, , Figure AB–AD; Venoistodus venustus (Stauffer, ), Figure D; and Walliserodus amplissimus (Serpagli, ), Figure Q–T.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

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Conodonts in the Upper Ordovician Keisley Limestone of northern England: taxonomy, biostratigraphical significance and biogeographical relationships

Bergström

Ferretti²

2014

Papers in Palaeontology

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The classical fauna from the Keisley Limestone, one of the first Upper Ordovician conodont faunas described from the UK, is re-evaluated based on relatively abundant collections of well-preserved conodont elements representing 20 multielement taxa. Common taxa are representatives of Amorphognathus duftonus, Birksfeldia circumplicata, Eocarniodus aff. E. gracilis, Hamarodus brevirameus, Scabbardella altipes, Strachanognathus parvus and several coniform species. These occur with more rare specimens of, among others, Aphelognathus nudus, Amorphognathus aff. A. ordovicicus, Dapsilodus mutatus, Icriodella prominens, Icriodella rhodesi sp. nov. and Protopanderodus liripipus. One new species is proposed, and the concepts of Birksfeldia, Gamachignathus, Icriodella and Notiodella are discussed. It is proposed that Birksfeldia is a senior synonym of Gamachignathus and Notiodella a junior synonym of Icriodella. The described Keisley species association, which represents the A. ordovicicus Zone and is of late Katian (Ka4) age, is closely similar to those of the Boda Limestone of south-central Sweden and some other European faunas, but coeval shallow-water faunas from eastern North America differ in several respects from these European faunas. Biostratigraphy and carbon isotope chemostratigraphy indicate that most of the Keisley Limestone is of late Katian age

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Section: Systematic Palaeontologymentioning

confidence: 99%

“…A–C, Protopanderodus liripipus Kennedy, Barnes and Uyeno, ; A, IPUM 28535, lateral view; B, IPUM 28536, lateral view; C, IPUM 28537, lateral view. D, Venoistodus venustus (Stauffer, ), IPUM 28538, lateral view.…”

mentioning

confidence: 99%

Conodonts in the Upper Ordovician Keisley Limestone of northern England: taxonomy, biostratigraphical significance and biogeographical relationships

Bergström

Ferretti²

2014

Papers in Palaeontology

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“…M–O, D repanoistodus suberectus (Branson and Mehl, ); IPUM 28412–28414; lateral views; sample levels WW 7, WW 12 and WW 2. P, P rotopanderodus liripipus Kennedy, Barnes and Uyeno, ; IPUM 28415; lateral view. Q–R, P seuedooneotodus humilis Orchard, ; IPUM 28416 and 28417; upper‐lateral and upper views; sample levels WW 16 and WW 7.…”

Section: Systematic Palaeontologymentioning

confidence: 99%

Katian (Upper Ordovician) conodonts from Wales

Ferretti¹,

Bergström

Barnes

2013

Palaeontology

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Middle and upper Katian conodonts were previously known in the British Isles from relatively small collections obtained from a few localities. The present study is mainly based on 17 samples containing more than 17 000 conodont elements from an approximately 14-m-thick succession of the Sholeshook Limestone Formation in a road\ud cut near Whitland, South Wales, that yielded a diverse fauna of more than 40 taxa. It is dominated by representatives of Amorphognathus, Aphelognathus/Plectodina and Eocarniodus along with several coniform taxa. Representatives of Decoriconus, Istorinus and Sagittodontina are reported from the Ordovician of UK for the first time. The fauna is a typical representative of the British Province of the Atlantic Realm and includes a mixture of taxa of North American, Baltoscandic and Mediterranean affinities along with pandemic species. Based on the presence of many elements of Amorphognathus ordovicicus and some morphologically advanced specimens of Amorphognathus superbus, the Sholeshook Limestone Formation is referred to the lower A. ordovicicus Zone. Most of the unit is also coeval with Zone 2 of the\ud Cautleyan Stage in the British regional stage classification, and stage slice Ka3 of the middle Katian Stage in the global stratigraphical classification, an age assignment consistent with data from trilobites, graptolites and chitinozoans. The unusually large collection of M elements of Amorphognathus provides insight into the complex morphological variation in this element of some Katian species of this genus. The Sholeshook conodont fauna is similar to those of the Crug and Birdshill limestones, but differs in several respects from the slightly older ones from the Caradocian type area in the Welsh Borderland. Although having some species in common, the Sholeshook conodont fauna clearly differs from coeval Baltoscandic faunas and is even more different in composition compared with equivalent North American Midcontinent faunas

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“…The vol canic sequence is overlain by gray wackes containing debris from the underlying volcanic rocks (Helmstaedt, 1971;Skinner, 1974). The fossiliferous strata indicate that the upper part of the group is of Middle Ordovician age (Kennedy et al, 1979;Nowlan, 1981).…”

Section: Geological Settingmentioning

confidence: 99%

Geochemistry of Ordovician volcanic rocks of the Tetagouche Group of southwestern New Brunswick

Dostál

1989

atgeol

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The Lower to Middle Ordovician volcanic suite of the Tetagouche Group from the southwestern part of the Miramichi Terrane in the Woodstock-Meductic area in southwestern New Brunswick is composed of a bimodal basalt-rhyolite association. The basalts have calc-alkalic characteristics and were emplaced on the continental crust in a volcanic arc or back-arc environment. The rhyolites were probably derived by melting of an amphibolite-facies crust. The basalts differ from those of the Tetagouche Group from the Bathurst area which include within-plate basalts and MORB. However, they both may be part of a single Ordovician arc-back-arc system.Le cortege volcanique du Groupe de Tetagouche (Ordovicien median a inferieur) dans la portion sud-ouest de la Laniere de Miramichi (region de Woodstock-Meductic, sud-ouest du Nouveau-Brunswick) se compose d'une association bimodale de basalte et rhyolite. Les basaltes presentent des caracteres calco-alcalins et ils se sont mis en place sur la croute continentale dans un milieu d 'arc insulaire ou de retro-arc. Les rhyolites proviennent probablement de la fonte d 'une croute de facies a amphibolites. Les basaltes different de ceux du Groupe de Tetagouche dans la region de Bathurst, qui comprennent des basaltes intra-plaques et des MORB, quoique tous deux puissent faire partie d 'un systeme arc:retro-arc ordovicien unique.[Traduit par le journal]

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A Middle Ordovician conodont faunule from the Tetagouche Group, Camel Back Mountain, New Brunswick

Cited by 36 publications

References 3 publications

Conodonts in the Upper Ordovician Keisley Limestone of northern England: taxonomy, biostratigraphical significance and biogeographical relationships

Conodonts in the Upper Ordovician Keisley Limestone of northern England: taxonomy, biostratigraphical significance and biogeographical relationships

Katian (Upper Ordovician) conodonts from Wales

Geochemistry of Ordovician volcanic rocks of the Tetagouche Group of southwestern New Brunswick

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