Works by Hammer, Øyvind

Results: 46

Correction: The Bothriolepis (Placodermi, Antiarcha) material from the Valentia Slate Formation of the Iveragh Peninsula (middle Givetian, Ireland): Morphology, evolutionary and systematic considerations, phylogenetic and palaeogeographic implications.

Published in:

2025

By:

Dupret, Vincent;
Byrne, Hannah M.;
Castro, Nélia;
Hammer, Øyvind;
Higgs, Kenneth T.;
Long, John A.;
Niedźwiedzki, Grzegorz;
Qvarnström, Martin;
Stössel, Iwan;
Ahlberg, Per E.

Publication type:

Correction Notice

The radiolarian fauna during the Younger Dryas–Holocene transition in And fjorden, northern Norway.

Published in:

Polar Research, 2019, v. 38, p. 1, doi. 10.33265/polar.v38.3444

By:

Bjørklund, Kjell R.;
Kruglikova, Svetlana B.;
Hammer, Øyvind

Publication type:

Article

Sedimentary environments in the south-western Barents Sea during the last deglaciation and the Holocene: a case study outside the Ingøydjupet trough.

Published in:

Polar Research, 2016, v. 35, n. 1, p. 1, doi. 10.3402/polar.v35.23104

By:

Pau, Mauro;
Hammer, Øyvind

Publication type:

Article

Discussion: The development of ammonoid septa: An epithelial invagination process controlled by morphogens or by viscous fingering?

Published in:

Historical Biology, 2000, v. 14, n. 4, p. 299, doi. 10.1080/10292380009380574

By:

Checa, Antonio G.;
García‐Ruiz, Juan Manuel;
Hammer, Øyvind

Publication type:

Article

The development of ammonoid septa: An epithelial invagination process controlled by morphogens?

Published in:

Historical Biology, 1999, v. 13, n. 2/3, p. 153, doi. 10.1080/08912969909386579

By:

Hammer, Øyvind

Publication type:

Article

Decrypting Magnetic Fabrics (AMS, AARM, AIRM) Through the Analysis of Mineral Shape Fabrics and Distribution Anisotropy.

Published in:

Journal of Geophysical Research. Solid Earth, 2021, v. 126, n. 6, p. 1, doi. 10.1029/2021JB021895

By:

Mattsson, Tobias;
Petri, Benoît;
Almqvist, Bjarne;
McCarthy, William;
Burchardt, Steffi;
Palma, J. Octavio;
Hammer, Øyvind;
Galland, Olivier

Publication type:

Article

Linking Geology and Microbiology: Inactive Pockmarks Affect Sediment Microbial Community Structure.

Published in:

PLoS ONE, 2014, v. 9, n. 1, p. 1, doi. 10.1371/journal.pone.0085990

By:

Haverkamp, Thomas H. A.;
Hammer, Øyvind;
Jakobsen, Kjetill S.

Publication type:

Article

Is the hyoid a constraint on innovation? A study in convergence driving feeding in fish-shaped marine tetrapods – CORRIGENDUM.

Published in:

2023

By:

Delsett, Lene Liebe;
Pyenson, Nicholas;
Miedema, Feiko;
Hammer, Øyvind

Publication type:

Correction Notice

Is the hyoid a constraint on innovation? A study in convergence driving feeding in fish-shaped marine tetrapods.

Published in:

Paleobiology, 2023, v. 49, n. 4, p. 684, doi. 10.1017/pab.2023.12

By:

Delsett, Lene Liebe;
Pyenson, Nicholas;
Miedema, Feiko;
Hammer, Øyvind

Publication type:

Article

The nature of Ordovician limestone-marl alternations in the Oslo-Asker District (Norway): witnesses of primary glacio-eustasy or diagenetic rhythms?

Published in:

Scientific Reports, 2016, p. 18787, doi. 10.1038/srep18787

By:

Amberg, Chloé E. A.;
Collart, Tim;
Salenbien, Wout;
Egger, Lisa M.;
Munnecke, Axel;
Nielsen, Arne T.;
Monnet, Claude;
Hammer, Øyvind;
Vandenbroucke, Thijs R. A.

Publication type:

Article

Mesozoic marine reptiles from Spitsbergen and their ecosystems.

Published in:

Geology Today, 2019, v. 35, n. 1, p. 20, doi. 10.1111/gto.12256

By:

Delsett, Lene L.;
Druckenmiller, Patrick S.;
Hammer, Øyvind;
Hryniewicz, Krzysztof;
Knutsen, Espen M.;
Koevoets, Maayke J.;
Nakrem, Hans A.;
Roberts, Aubrey J.;
Hurum, Jørn H.

Publication type:

Article

The Late Jurassic world of the high Arctic, Spitsbergen, Svalbard.

Published in:

Geophysical Research Abstracts, 2018, v. 20, p. 4117

By:

Koevoets, Maayke;
Hammer, Øyvind;
Olaussen, Snorre;
Little, Crispin T. S.

Publication type:

Article

Linking warming, environmental changes, and volcanic ash falls from onset to recovery of the PETM: new insights from the island of Fur, Denmark.

Published in:

Geophysical Research Abstracts, 2018, v. 20, p. 1464

By:

Stokke, Ella Wulfsberg;
Whiteside, Jessica;
Hammer, Øyvind;
Svensen, Henrik;
Jones, Morgan

Publication type:

Article

Structure and function of respiratory turbinates in phocid seals.

Published in:

Polar Biology, 2020, v. 43, n. 2, p. 157, doi. 10.1007/s00300-019-02618-w

By:

Mason, Matthew J.;
Wenger, Léa M. D.;
Hammer, Øyvind;
Blix, Arnoldus S.

Publication type:

Article

Formation of Si-Al-Mg-Ca-rich zoned magnetite in an end-Permian phreatomagmatic pipe in the Tunguska Basin, East Siberia.

Published in:

Mineralium Deposita, 2017, v. 52, n. 8, p. 1205, doi. 10.1007/s00126-017-0717-9

By:

Neumann, Else-Ragnhild;
Svensen, Henrik;
Polozov, Alexander;
Hammer, Øyvind

Publication type:

Article

A model for maxilloturbinate morphogenesis in seals.

Published in:

PLoS ONE, 2025, v. 20, n. 3, p. 1, doi. 10.1371/journal.pone.0316669

By:

Kings, Jonathan E;
Folkow, Lars P;
Hammer, Øyvind;
Kjelstrup, Signe;
Mason, Matthew J;
Xiong, Fengzhu;
Flekkøy, Eirik G

Publication type:

Article

Exceptional X-Ray contrast: Radiography imaging of a Middle Triassic mixosaurid from Svalbard.

Published in:

PLoS ONE, 2023, v. 18, n. 5, p. 1, doi. 10.1371/journal.pone.0285939

By:

Engelschiøn, Victoria S.;
Roberts, Aubrey J.;
With, Ruben;
Hammer, Øyvind

Publication type:

Article

The Bothriolepis (Placodermi, Antiarcha) material from the Valentia Slate Formation of the Iveragh Peninsula (middle Givetian, Ireland): Morphology, evolutionary and systematic considerations, phylogenetic and palaeogeographic implications.

Published in:

PLoS ONE, 2023, v. 18, n. 2, p. 1, doi. 10.1371/journal.pone.0280208

By:

Dupret, Vincent;
Byrne, Hannah M.;
Castro, Nélia;
Hammer, Øyvind;
Higgs, Kenneth T.;
Long, Johan A.;
Niedźwiedzki, Grzegorz;
Qvarnström, Martin;
Stössel, Iwan;
Ahlberg, Per E.

Publication type:

Article

Pattern formation: Watch your step.

Published in:

Nature Physics, 2008, v. 4, n. 4, p. 265, doi. 10.1038/nphys915

By:

Hammer, Øyvind

Publication type:

Article

Non-tetrapod sarcopterygians from the Valentia Slate Formation (Givetian, Devonian) of the Iveragh Peninsula, south-western Ireland: systematic reappraisal and palaeobiogeographic implications.

Published in:

Spanish Journal of Palaeontology, 2023, v. 38, n. 1, p. 37, doi. 10.7203/sjp.26527

By:

DUPRET, Vincent;
BYRNE, Hannah;
CHALLANDS, TOM;
HAMMER, Øyvind;
HIGGS, Kenneth;
LONG, John;
NIEDŹWIEDZKI, Grzegorz;
QVARNSTRÖM, Martin;
STÖSSEL, Iwan;
AHLBERG, Per Erik

Publication type:

Article

Microfacies of the Volgian-Ryazanian (Jurassic-Cretaceous) hydrocarbon seep carbonates from Sassenfjorden, central Spitsbergen, Svalbard.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 2012, v. 92, n. 2/3, p. 113

By:

Hryniewicz, Krzysztof;
Hammer, Øyvind;
Nakrem, Hans A.;
Little, Crispin T. S.

Publication type:

Article

Organic carbon isotope chemostratigraphy and cyclostratigraphy in the Volgian of Svalbard.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 2012, v. 92, n. 2/3, p. 103

By:

Hammer, Øyvind;
Collignon, Marine;
Nakrem, Hans Arne

Publication type:

Article

Petrography and sedimentology of the Slottsmøya Member at Janusfjellet, central Spitsbergen.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 2012, v. 92, n. 2/3, p. 89

By:

Collignon, Marine;
Hammer, Øyvind

Publication type:

Article

An Arctic Lagerstätte – the Slottsmøya Member of the Agardhfjellet Formation (Upper Jurassic – Lower Cretaceous) of Spitsbergen.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 2012, v. 92, n. 2/3, p. 55

By:

Hurum, Jørn H.;
Nakrem, Hans A.;
Hammer, Øyvind;
Knutsen, Espen M.;
Druckenmiller, Patrick S.;
Hryniewicz, Krzysztof;
Novis, Linn K.

Publication type:

Article

Bivalve-barnacle pseudoplanktonic colonisation of wood from the Toarcian, Lower Jurassic, Strawberry Bank Lagerstätte, Somerset, UK.

Published in:

Acta Palaeontologica Polonica, 2023, v. 68, n. 1, p. 133, doi. 10.4202/app.01018.2022

By:

LITTLE, CRISPIN T. S.;
GALE, ANDY;
WILLIAMS, MATT;
HAMMER, ØYVIND;
FERNANDEZ, VINCENT

Publication type:

Article

Large onychites (cephalopod hooks) from the Upper Jurassic of the Boreal Realm.

Published in:

Acta Palaeontologica Polonica, 2013, v. 58, n. 4, p. 827, doi. 10.4202/app.2012.0020

By:

HAMMER, ØYVIND;
HRYNIEWICZ, KRZYSZTOF;
HURUM, JØRN H.;
HØYBERGET, MAGNE;
NUTSEN, ESPEN M.;
NAKREM, HANS A.

Publication type:

Article

High rank taxa of Polycystina (Radiolaria) as environmental bioindicators.

Published in:

Micropaleontology, 2011, v. 57, n. 6, p. 483

By:

Kruglikova, Svetlana B.;
Bjørklund, Kjell R.;
Hammer, Øyvind

Publication type:

Article

Bivalve beds reveal rapid changes in ocean oxygenation in the Boreal Middle Triassic - a case study from Svalbard, Norway.

Published in:

Norwegian Journal of Geology, 2023, v. 103, p. 1, doi. 10.17850/njg103-2-1

By:

Engelschiøn, Victoria S.;
Bernhardsen, Sofie;
Wesenlund, Fredrik;
Hammer, Øyvind;
Hurum, Jørn H.;
Mørk, Atle

Publication type:

Article

Palaeoecology and palaeoenvironments of the Middle Jurassic to lowermost Cretaceous Agardhfjellet Formation (Bathonian-Ryazanian), Spitsbergen, Svalbard.

Published in:

Norwegian Journal of Geology, 2019, v. 99, n. 1, p. 1, doi. 10.17850/njg99-1-02

By:

Koevoets, Maayke J.;
Hammer, Øyvind;
Little, Crispin T. S.

Publication type:

Article

Stratigraphy and age of the Grippia niveau bonebed, Lower Triassic Vikinghøgda Formation, Spitsbergen.

Published in:

Norwegian Journal of Geology, 2018, v. 98, n. 2, p. 175, doi. 10.17850/njg98-2-02

By:

Hansen, Bitten Bolvig;
Hammer, Øyvind;
Nakrem, Hans Arne

Publication type:

Article

The history of exploration and stratigraphy of the Early to Middle Triassic vertebrate-bearing strata of Svalbard (Sassendalen Group, Spitsbergen).

Published in:

Norwegian Journal of Geology, 2018, v. 98, n. 2, p. 165, doi. 10.17850/njg98-2-04

By:

Hurum, Jørn H.;
Engelschiøn, Victoria S.;
Økland, Inghild;
Bratvold, Janne;
Ekeheien, Christina P.;
Roberts, Aubrey J.;
Delsett, Lene L.;
Hansen, Bitten B.;
Mørk, Atle;
Nakrem, Hans A.;
Druckenmiller, Patrick S.;
Hammer, Øyvind

Publication type:

Article

A THEORY FOR THE FORMATION OF COMMARGINAL RIBS IN MOLLUSC SHELLS BY REGULATIVE OSCILLATION.

Published in:

Journal of Molluscan Studies, 2000, v. 66, n. 3, p. 383, doi. 10.1093/mollus/66.3.383

By:

HAMMER, ØYVIND

Publication type:

Article

The middle Smithian (Early Triassic) ammonoid Arctoceras blomstrandi: conch morphology and ornamentation in relation to stratigraphy.

Published in:

Papers in Palaentology, 2021, v. 7, n. 3, p. 1435, doi. 10.1002/spp2.1348

By:

Hansen, Bitten B.;
Bucher, Hugo;
Schneebeli‐Hermann, Elke;
Hammer, Øyvind;
Brayard, Arnaud

Publication type:

Article

Progressive Growth of the Cerro Bayo Cryptodome, Chachahuén Volcano, Argentina—Implications for Viscous Magma Emplacement.

Published in:

Journal of Geophysical Research. Solid Earth, 2019, v. 124, n. 8, p. 7934, doi. 10.1029/2019JB017543

By:

Burchardt, Steffi;
Mattsson, Tobias;
Palma, J. Octavio;
Galland, Olivier;
Almqvist, Bjarne;
Mair, Karen;
Jerram, Dougal A.;
Hammer, Øyvind;
Sun, Yang

Publication type:

Article

Dynamics of hydrothermal seeps from the Salton Sea geothermal system (California, USA) constrained by temperature monitoring and time series analysis.

Published in:

Journal of Geophysical Research. Solid Earth, 2009, v. 114, n. B9, p. n/a, doi. 10.1029/2008JB006247

By:

Svensen, Henrik;
Hammer, Øyvind;
Mazzini, Adriano;
Onderdonk, Nathan;
Polteau, Stephane;
Planke, Sverre;
Podladchikov, Yuri Y.

Publication type:

Article

Experimental investigation of the hydrodynamics in pockmarks using particle tracking velocimetry.

Published in:

Geo-Marine Letters, 2014, v. 34, n. 1, p. 11, doi. 10.1007/s00367-013-0348-9

By:

Pau, Mauro;
Gisler, Galen;
Hammer, Øyvind

Publication type:

Article

Numerical simulation of upwelling currents in pockmarks, and data from the Inner Oslofjord, Norway.

Published in:

Geo-Marine Letters, 2009, v. 29, n. 4, p. 269, doi. 10.1007/s00367-009-0140-z

By:

Hammer, Øyvind;
Webb, Karen E.;
Depreiter, Davy

Publication type:

Article

Pockmarks in the inner Oslofjord, Norway.

Published in:

Geo-Marine Letters, 2009, v. 29, n. 2, p. 111, doi. 10.1007/s00367-008-0127-1

By:

Webb, Karen;
Hammer, Øyvind;
Lepland, Aivo;
Gray, John

Publication type:

Article

Fossils From the Arctic in the Collections of the Natural History Museum in Oslo, Norway.

Published in:

Collections: A Journal for Museum & Archives Professionals, 2023, v. 19, n. 3, p. 420, doi. 10.1177/15501906231159039

By:

Nakrem, Hans Arne;
Lindemann, Franz-Josef;
Hurum, Jørn Harald;
Hammer, Øyvind

Publication type:

Article

Piston coring of Inner Oslofjord pockmarks, Norway: constraints on age and mechanism.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 2010, v. 90, n. 1/2, p. 79

By:

Hammer, Øyvind;
Webb, Karen E.

Publication type:

Article

Tracking polar dinosaurs - new finds from the Lower Cretaceous of Svalbard.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 2006, v. 86, n. 4, p. 397

By:

Hurum, Jørn H.;
Milàn, Jesper;
Hammer, Øyvind;
Midtkandal, Ivar;
Amundsen, Hans;
Sæther, Bjørn

Publication type:

Article

Travertines from the Troll thermal springs, Svalbard.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 2006, v. 86, n. 4, p. 387

By:

Jamtveit, Bjørn;
Hammer, Øyvind;
Andersson, Carin;
Dysthe, Dag. K.;
Heldmann, Jennifer;
Fogel, Marilyn L.

Publication type:

Article

A 12- to 14-million year faunal diversity cycle in the Ordovician of Western Baltica.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 2003, v. 83, n. 1, p. 79

By:

Hammer, Øyvind

Publication type:

Article

Computer-aided study of growth patterns in tabulate corals, exemplified by Catenipora heintzi from Ringerike, Oslo Region.

Published in:

Norwegian Journal of Geology / Norsk Geologisk Forening, 1999, v. 79, n. 4, p. 219, doi. 10.1080/002919699433672

By:

HAMMER, ØYVIND

Publication type:

Article

Bivalve-barnacle pseudoplanktonic colonisation of wood from the Toarcian, Lower Jurassic, Strawberry Bank Lagerstätte, Somerset, UK.

Published in:

Palaeontologia Polonica, 2023, v. 68, n. 1, p. 133, doi. 10.4202/app.01018.2022

By:

LITTLE, CRISPIN T. S.;
GALE, ANDY;
WILLIAMS, MATT;
HAMMER, ØYVIND;
FERNANDEZ, VINCENT

Publication type:

Article

Beak and skull shapes of human commensal and non-commensal house sparrows Passer domesticus.

Published in:

BMC Evolutionary Biology, 2013, v. 13, n. 1, p. 1, doi. 10.1186/1471-2148-13-200

By:

Riyahi, Sepand;
Hammer, Øyvind;
Arbabi, Tayebeh;
Sánchez, Antonio;
Roselaar, Cees S.;
Aliabadian, Mansour;
Sætre, Glenn-Peter

Publication type:

Article