173 research outputs found
Event depsits associated with tsunamis and their sedimantary structure in Holocene marsh deposits on the east coast of the Shima Pninsulacentral Japan
Cold-seep ostracods from the western Svalbard margin: direct palaeo-indicator for methane seepage?
Source at https://doi.org/10.5194/jm-37-139-2018 Despite their high abundance and diversity, microfossil taxa adapted to a particular chemosynthetic
environment have rarely been studied and are therefore poorly known. Here we report on an ostracod species,
Rosaliella svalbardensis gen. et sp. nov., from a cold methane seep site at the western Svalbard margin, Fram
Strait. The new species shows a distinct morphology, different from other eucytherurine ostracod genera. It has
a marked similarity to Xylocythere, an ostracod genus known from chemosynthetic environments of wood falls
and hydrothermal vents. Rosaliella svalbardensis is probably an endemic species or genus linked to methane
seeps. We speculate that the surface ornamentation of pore clusters, secondary reticulation, and pit clusters may
be related to ectosymbiosis with chemoautotrophic bacteria. This new discovery of specialized microfossil taxa
is important because they can be used as an indicator species for past and present seep environments (http:
//zoobank.org/urn:lsid:zoobank.org:pub:6075FF30-29D5-4DAB-9141-AE722CD3A69B)
Cold-seep ostracods from the western Svalbard margin: direct palaeo-indicator for methane seepage?
Despite their high abundance and diversity, microfossil taxa adapted to a particular chemosynthetic
environment have rarely been studied and are therefore poorly known. Here we report on an ostracod species,
Rosaliella svalbardensis gen. et sp. nov., from a cold methane seep site at the western Svalbard margin, Fram
Strait. The new species shows a distinct morphology, different from other eucytherurine ostracod genera. It has
a marked similarity to Xylocythere, an ostracod genus known from chemosynthetic environments of wood falls
and hydrothermal vents. Rosaliella svalbardensis is probably an endemic species or genus linked to methane
seeps. We speculate that the surface ornamentation of pore clusters, secondary reticulation, and pit clusters may
be related to ectosymbiosis with chemoautotrophic bacteria. This new discovery of specialized microfossil taxa
is important because they can be used as an indicator species for past and present seep environments (http:
//zoobank.org/urn:lsid:zoobank.org:pub:6075FF30-29D5-4DAB-9141-AE722CD3A69B)
Data from: Late Quaternary deep-sea ostracode taxonomy of the eastern North Atlantic Ocean
Taxonomic revision and re-evaluation of the eastern North Atlantic deep-sea ostracodes are conducted based on late Quaternary sediments from Ocean Drilling Program (ODP) Hole 982A, Rockall Plateau, eastern North Atlantic. Twenty one genera and 51 species were examined and (re-)illustrated with high-resolution scanning electron microscopy images. Six new species are described: Polycope lunaris, Argilloecia labri, Bythoceratina nuda, Cytheropteron colesoabyssorum, Cytheropteron colesopunctatum, and Cytheropteron paramediotumidum. Excellent fossil ostracode preservation in this sediment core enabled us to provide a robust taxonomic baseline of the eastern North Atlantic deep-sea ostracodes for application to palaeoceanographical, palaeoecological, and biogeographical studies
Data from: Quarternary deep-sea Ostracode taxonomy of ocean drilling program site 980, Easterm North Atlantic Ocean
Ocean Drilling Program (ODP) Holes 980 B and C, Feni Drift at the eastern slope of the Rockall Plateau, eastern North Atlantic, were examined for late Quaternary deep-sea ostracode taxonomy. Nineteen genera and 32 species were examined and (re-)illustrated with high-resolution scanning electron microscopy images. One new species Cytheropteron paramassoni n. sp. is described and one new name Eucytherura zehali is proposed for Eucytherura hazeli Yasuhara et al., 2009. This study provides updated taxonomic information for deep-sea ostracode genera and species from the eastern North Atlantic, which is an important baseline for application of deep-sea ostracodes to paleoceanographical reconstructions and paleoecological studies in this region
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Π£ΡΠ΅Π±.-ΠΌΠ΅ΡΠΎΠ΄. ΠΏΠΎΡΠΎΠ±ΠΈΠ΅ Π΄Π»Ρ ΠΏΡΠ°ΠΊΡΠΈΡ. ΠΈ ΡΠ°ΠΌΠΎΡΡΠΎΡΡ. ΡΠ°Π±ΠΎΡ [Π΄Π»Ρ ΡΡΡΠ΄Π΅Π½ΡΠΎΠ² ΡΠΏΠ΅Ρ. 030300.68 Β«ΠΡΠΈΡ
ΠΎΠ»ΠΎΠ³ΠΈΡΒ»].ΠΠΎΡΡΡΠΏ ΠΊ ΠΏΠΎΠ»Π½ΠΎΠΌΡ ΡΠ΅ΠΊΡΡΡ ΠΎΡΠΊΡΡΡ ΠΈΠ· ΡΠ΅ΡΠΈ Π‘Π€Π£, Π²Π½Π΅ ΡΠ΅ΡΠΈ Π΄ΠΎΡΡΡΠΏ Π²ΠΎΠ·ΠΌΠΎΠΆΠ΅Π½ Π΄Π»Ρ ΡΠΈΡΠ°ΡΠ΅Π»Π΅ΠΉ ΠΠ°ΡΡΠ½ΠΎΠΉ Π±ΠΈΠ±Π»ΠΈΠΎΡΠ΅ΠΊΠΈ Π‘Π€Π£ ΠΈΠ»ΠΈ Π·Π° ΠΏΠ»Π°ΡΡ.Π£ΡΠ΅Π±Π½ΠΎ-ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΎΠ΅ ΠΏΠΎΡΠΎΠ±ΠΈΠ΅ ΠΏΡΠ΅Π΄Π½Π°Π·Π½Π°ΡΠ΅Π½ΠΎ Π΄Π»Ρ ΠΎΡΠ³Π°Π½ΠΈΠ·Π°ΡΠΈΠΈ ΡΠ°ΠΌΠΎΡΡΠΎΡΡΠ΅Π»ΡΠ½ΠΎΠΉ ΡΠ°Π±ΠΎΡΡ ΡΡΡΠ΄Π΅Π½ΡΠ° Π² ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΠΈ Ρ ΠΠΠ‘ ΠΠΠ Π Π€ ΠΏΠΎ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ ΠΌΠ°ΡΠ΅ΡΠΈΠ°Π»Π° ΠΏΠΎ ΠΊΡΡΡΡ Β«ΠΡΠ½ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΊΠΎΠ½ΡΠ»ΠΈΠΊΡΡΒ» ΠΈ ΡΠΎΠ΄Π΅ΡΠΆΠΈΡ ΠΌΠ΅ΡΠΎΠ΄ΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠΊΠ°Π·Π°Π½ΠΈΡ, ΠΎΠΏΡΠ΅Π΄Π΅Π»ΡΡΡΠΈΠ΅ ΡΠΎΡΡΠ°Π², ΠΎΠ±ΡΠ΅ΠΌ Π·Π°Π΄Π°Π½ΠΈΠΉ, Π° ΡΠ°ΠΊΠΆΠ΅ ΡΡΠ΅Π±ΠΎΠ²Π°Π½ΠΈΡ ΠΈ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄Π°ΡΠΈΠΈ ΠΏΠΎ Π²ΡΠΏΠΎΠ»Π½Π΅Π½ΠΈΡ ΡΠ°Π±ΠΎΡ, ΠΏΡΠ΅Π΄ΡΡΠΌΠΎΡΡΠ΅Π½Π½ΡΡ
ΠΈΡΠΎΠ³ΠΎΠ²ΡΠΌ ΠΊΠΎΠ½ΡΡΠΎΠ»Π΅ΠΌ. Π ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΠ΅ Π²ΠΊΠ»ΡΡΠ΅Π½ ΡΠΏΠΈΡΠΎΠΊ ΠΎΡΠ½ΠΎΠ²Π½ΠΎΠΉ ΠΈ Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡΠ΅Π»ΡΠ½ΠΎΠΉ Π»ΠΈΡΠ΅ΡΠ°ΡΡΡΡ, ΠΏΡΠ΅Π΄Π»Π°Π³Π°Π΅ΠΌΠΎΠΉ ΡΡΡΠ΄Π΅Π½ΡΡ Π΄Π»Ρ ΡΠ°ΠΌΠΎΡΡΠΎΡΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΠΈΠ·ΡΡΠ΅Π½ΠΈΡ ΠΏΠΎ ΠΊΠ°ΠΆΠ΄ΠΎΠΉ ΡΠ΅ΠΌΠ΅ ΠΊΡΡΡΠ°. ΠΡΠ΅Π΄Π½Π°Π·Π½Π°ΡΠ΅Π½ΠΎ Π΄Π»Ρ ΠΌΠ°Π³ΠΈΡΡΡΠΎΠ² ΠΏΡΠΈΡ
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