Live (stained) benthic foraminifera from the West-Gironde Mud Patch (Bay of Biscay, NE Atlantic): Assessing the reliability of bio-indicators in a complex shelf sedimentary unit.

The highly deformed section at Open Bay is one of the few good exposures of a thick sedimentary unit within the prebatholithic rocks along coastal British Columbia. It provides new structural information relating to emplacement of a part of the Coast Range batholith and it contains an important Upper Triassic fauna unusually well represented. Structural and paleontological analyses are mutually supporting and are purposely combined in one paper.Thirteen ammonite genera from 14 localities clearly substantiate McLearn's tentative assignment to the Tropites subbullatus zone (Upper Karnian) and suggest a restriction to the T. dilleri subzone as defined in northern California.Contrary to an earlier view, the beds are lithologically similar across the whole bay except for variations in the intensity of deformation and thermal alteration. Their contact with slightly older relatively undeformed flows is apparently a zone of dislocation. Stratigraphic thicknesses cannot be measured with confidence, and subdivision into "Marble Bay Formation" and "Open Bay Group" cannot be accepted. Open Bay Formation is redefined to include all the folded marble and interbedded pillow lava at Open Bay. Lithologic and biostratigraphic correlation is suggested with the lower middle part of the Quatsino Formation on Iron River, 24 miles to the southwest. Basalt flows and pillowed volcanics west of Open Bay are correlated with the Texada Formation within the Karmutsen Group.The predominant folding is shown to precede, accompany, and follow intrusion of numerous andesitic pods and to precede emplacement of quartz diorite of the batholith. Structural asymmetry is shown to have originated through gentle cross-folding and emplacement of minor intrusives during deformation.

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Paleoproductivity from benthic foraminifera abundance: Glacial to postglacial change in the west-equatorial Pacific

Geology ◽

10.1130/0091-7613(1991)019<1173:pfbfag>2.3.co;2 ◽

1991 ◽

Vol 19 (12) ◽

pp. 1173 ◽

Cited By ~ 271

Author(s):

Juan C. Herguera ◽

W. H. Berger

Keyword(s):

Benthic Foraminifera ◽

Equatorial Pacific ◽

The West

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STABLE OXYGEN AND CARBON ISOTOPES OF LIVE (STAINED) BENTHIC FORAMINIFERA FROM CAP-FERRET CANYON (BAY OF BISCAY)

The Journal of Foraminiferal Research ◽

10.2113/gsjfr.38.1.39 ◽

2008 ◽

Vol 38 (1) ◽

pp. 39-51 ◽

Cited By ~ 17

Author(s):

C. Fontanier ◽

F. J. Jorissen ◽

E. Michel ◽

E. Cortijo ◽

L. Vidal ◽

...

Keyword(s):

Carbon Isotopes ◽

Benthic Foraminifera ◽

Bay Of Biscay ◽

Oxygen And Carbon Isotopes ◽

Stable Oxygen

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New insights in the biogeographical distributions of two Spionidae (Annelida) from the NE Atlantic and Mediterranean French coasts

Zoosymposia ◽

10.11646/zoosymposia.19.1.18 ◽

2020 ◽

Vol 19 (1) ◽

pp. 173-184

Author(s):

JÉRÔME JOURDE ◽

NICOLAS LAVESQUE ◽

CÉLINE LABRUNE ◽

JEAN-MICHEL AMOUROUX ◽

PAULO BONIFÁCIO ◽

...

Keyword(s):

Mediterranean Sea ◽

Morphological Characters ◽

Bay Of Biscay ◽

Ne Atlantic ◽

Marine Waters ◽

Gulf Of Lion ◽

The Mediterranean ◽

Brown Pigmentation

We report the first occurrences of Spiophanes afer Meißner, 2005 and Prionospio cristaventralis Delgado-Blas, Díaz-Díaz & Viéitez, 2018 from French marine waters (from the southern part of the Bay of Biscay in NE Atlantic, and the Gulf of Lion in the Mediterranean Sea). Morphological characters of S. afer include the presence of an occipital antenna, dorsal ciliated organs extending to chaetigers 13–15, neuropodial hooks from chaetiger 15, ventrolateral intersegmental pouches from chaetigers 14–15, chaetal spreaders of “2+3 type”, and conspicuous dark brown pigmentation on parapodia of chaetigers 9–13. Prionospio cristaventralis has four pairs of branchiae (1st and 4th pinnate, 2nd and 3rd apinnate), ventral crests from chaetigers 11–12, high dorsal crests on chaetigers 10–11, and very large notopodial prechaetal lamellae on anterior chaetigers. Both records represent northern extensions of their known distributions. However, the presence of S. afer on French coasts may have been overlooked for several decades. The validity of the recently proposed Spiophanes adriaticus is questioned.

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A new species of Ampharete (Annelida: Ampharetidae) from the West Shetland shelf (NE Atlantic Ocean), with two updated keys to the species of the genus in North Atlantic waters

European Journal of Taxonomy ◽

10.5852/ejt.2019.531 ◽

2019 ◽

Author(s):

Julio Parapar ◽

Juan MOREIRA ◽

Ruth BARNICH

Keyword(s):

North Atlantic ◽

Small Body ◽

New Taxon ◽

Ne Atlantic ◽

The West ◽

The North ◽

Joint Nature Conservation Committee ◽

Ne Atlantic Ocean ◽

Micro Morphology ◽

A New Species

Ampharete oculicirrata sp. nov. (Annelida: Ampharetidae) is described from samples collected by the Joint Nature Conservation Committee and Marine Scotland Science, in the West Shetland Shelf NCMPA in the NE Atlantic. This species is characterised by a very small body size, thin and slender paleae, twelve thoracic and eleven abdominal uncinigers, presence of eyes both in the prostomium and the pygidium, the latter provided with a pair of long lateral cirri. The external micro-morphology of the new taxon was studied using scanning electron microscopy and compared with species described or reported from the North Atlantic. Two complementary keys to all species of Ampharete in the area are also provided.

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