Brachiopods from Late Jurassic—Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard
Late Jurassic–Early Cretaceous (Late Volgian–latest Ryazanian) rhynchonellate brachiopods are described from eight out of 15 hydrocarbon seep deposits in the Slottsmøya Member of the Agardhfjellet Formation in the Janusfjellet to Knorringfjellet area, central Spitsbergen, Svalbard. The fauna compris...
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ftmagnoliapress:oai:https://mapress.com/oai/:article/33351 2024-09-15T18:38:18+00:00 Brachiopods from Late Jurassic—Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard SANDY, MICHAEL R. HRYNIEWICZ, KRZYSZTOF HAMMER, ØYVIND NAKREM, HANS ARNE LITTLE, CRISPIN T. S. 2014-11-19 application/pdf https://www.mapress.com/zt/article/view/zootaxa.3884.6.1 eng eng Mangolia Press https://www.mapress.com/zt/article/view/zootaxa.3884.6.1/32647 https://www.mapress.com/zt/article/view/zootaxa.3884.6.1 Copyright (c) 2016 Zootaxa Zootaxa; Vol. 3884 No. 6: 19 Nov. 2014; 501–532 1175-5334 1175-5326 10.11646/zootaxa.3884.6 Brachiopoda Rhynchonellida Terebratulida hydrocarbon seeps Jurassic Cretaceous Spitsbergen Svalbard new genus new species Mollusca info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2014 ftmagnoliapress https://doi.org/10.11646/zootaxa.3884.6 2024-07-04T03:44:48Z Late Jurassic–Early Cretaceous (Late Volgian–latest Ryazanian) rhynchonellate brachiopods are described from eight out of 15 hydrocarbon seep deposits in the Slottsmøya Member of the Agardhfjellet Formation in the Janusfjellet to Knorringfjellet area, central Spitsbergen, Svalbard. The fauna comprises rhynchonellides, terebratulides (terebratuloids and loboidothyridoids) and a terebratellidine. The rhynchonellides include: Pseudomonticlarella varia Smirnova; Ptilorhynchia mclachlani sp. nov.; and Ptilorhynchia obscuricostata Dagys. The terebratulides belong to the terebratuloids: Cyrtothyris? sp.; Cyrtothyris aff. cyrta (Walker); Praelongithyris? aff. borealis Owen; and the loboidothyridoids: Rouillieria cf. michalkowii (Fahrenkohl); Rouillieria aff. ovoides (Sowerby); Rouillieria aff. rasile Smirnova; Uralella? cf. janimaniensis Makridin; Uralella? sp.; Pinaxiothyris campestris? Dagys; Placothyris kegeli? Harper et al.; and Seductorithyris septemtrionalis gen. et sp. nov. The terebratellidine Zittelina? sp. is also present. Age determinations for all but one of the brachiopod-bearing seeps are based on associated ammonites. Five of the seep carbonates have yielded Lingularia similis?, and it is the only brachiopod species recorded from two of the seeps. Other benthic invertebrate taxa occurring in the seeps include bivalves, gastropods, echinoderms, sponges, and serpulid and non-serpulid worm tubes. The brachiopod fauna has a strong Boreal palaeobiogeographic signature. Collectively, the Spitsbergen seep rhynchonellate brachiopods exhibit high species richness and low abundance (<100 specimens from 8 seeps). This contrasts markedly with other Palaeozoic–--Mesozoic brachiopod-dominated seep limestones where brachiopods are of low diversity (typically monospecific) with a super-abundance of individuals. The shallow water environmental setting for the Spitsbergen seeps supported a diverse shelf fauna, compared to enigmatic Palaeozoic–Mesozoic brachiopod-dominated seeps. Article in Journal/Newspaper Svalbard Spitsbergen Magnolia press Zootaxa 3884 6 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Brachiopoda Rhynchonellida Terebratulida hydrocarbon seeps Jurassic Cretaceous Spitsbergen Svalbard new genus new species Mollusca |
spellingShingle |
Brachiopoda Rhynchonellida Terebratulida hydrocarbon seeps Jurassic Cretaceous Spitsbergen Svalbard new genus new species Mollusca SANDY, MICHAEL R. HRYNIEWICZ, KRZYSZTOF HAMMER, ØYVIND NAKREM, HANS ARNE LITTLE, CRISPIN T. S. Brachiopods from Late Jurassic—Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard |
topic_facet |
Brachiopoda Rhynchonellida Terebratulida hydrocarbon seeps Jurassic Cretaceous Spitsbergen Svalbard new genus new species Mollusca |
description |
Late Jurassic–Early Cretaceous (Late Volgian–latest Ryazanian) rhynchonellate brachiopods are described from eight out of 15 hydrocarbon seep deposits in the Slottsmøya Member of the Agardhfjellet Formation in the Janusfjellet to Knorringfjellet area, central Spitsbergen, Svalbard. The fauna comprises rhynchonellides, terebratulides (terebratuloids and loboidothyridoids) and a terebratellidine. The rhynchonellides include: Pseudomonticlarella varia Smirnova; Ptilorhynchia mclachlani sp. nov.; and Ptilorhynchia obscuricostata Dagys. The terebratulides belong to the terebratuloids: Cyrtothyris? sp.; Cyrtothyris aff. cyrta (Walker); Praelongithyris? aff. borealis Owen; and the loboidothyridoids: Rouillieria cf. michalkowii (Fahrenkohl); Rouillieria aff. ovoides (Sowerby); Rouillieria aff. rasile Smirnova; Uralella? cf. janimaniensis Makridin; Uralella? sp.; Pinaxiothyris campestris? Dagys; Placothyris kegeli? Harper et al.; and Seductorithyris septemtrionalis gen. et sp. nov. The terebratellidine Zittelina? sp. is also present. Age determinations for all but one of the brachiopod-bearing seeps are based on associated ammonites. Five of the seep carbonates have yielded Lingularia similis?, and it is the only brachiopod species recorded from two of the seeps. Other benthic invertebrate taxa occurring in the seeps include bivalves, gastropods, echinoderms, sponges, and serpulid and non-serpulid worm tubes. The brachiopod fauna has a strong Boreal palaeobiogeographic signature. Collectively, the Spitsbergen seep rhynchonellate brachiopods exhibit high species richness and low abundance (<100 specimens from 8 seeps). This contrasts markedly with other Palaeozoic–--Mesozoic brachiopod-dominated seep limestones where brachiopods are of low diversity (typically monospecific) with a super-abundance of individuals. The shallow water environmental setting for the Spitsbergen seeps supported a diverse shelf fauna, compared to enigmatic Palaeozoic–Mesozoic brachiopod-dominated seeps. |
format |
Article in Journal/Newspaper |
author |
SANDY, MICHAEL R. HRYNIEWICZ, KRZYSZTOF HAMMER, ØYVIND NAKREM, HANS ARNE LITTLE, CRISPIN T. S. |
author_facet |
SANDY, MICHAEL R. HRYNIEWICZ, KRZYSZTOF HAMMER, ØYVIND NAKREM, HANS ARNE LITTLE, CRISPIN T. S. |
author_sort |
SANDY, MICHAEL R. |
title |
Brachiopods from Late Jurassic—Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard |
title_short |
Brachiopods from Late Jurassic—Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard |
title_full |
Brachiopods from Late Jurassic—Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard |
title_fullStr |
Brachiopods from Late Jurassic—Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard |
title_full_unstemmed |
Brachiopods from Late Jurassic—Early Cretaceous hydrocarbon seep deposits, central Spitsbergen, Svalbard |
title_sort |
brachiopods from late jurassic—early cretaceous hydrocarbon seep deposits, central spitsbergen, svalbard |
publisher |
Mangolia Press |
publishDate |
2014 |
url |
https://www.mapress.com/zt/article/view/zootaxa.3884.6.1 |
genre |
Svalbard Spitsbergen |
genre_facet |
Svalbard Spitsbergen |
op_source |
Zootaxa; Vol. 3884 No. 6: 19 Nov. 2014; 501–532 1175-5334 1175-5326 10.11646/zootaxa.3884.6 |
op_relation |
https://www.mapress.com/zt/article/view/zootaxa.3884.6.1/32647 https://www.mapress.com/zt/article/view/zootaxa.3884.6.1 |
op_rights |
Copyright (c) 2016 Zootaxa |
op_doi |
https://doi.org/10.11646/zootaxa.3884.6 |
container_title |
Zootaxa |
container_volume |
3884 |
container_issue |
6 |
_version_ |
1810482666255941632 |