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Smithsonian National Museum of Natural History
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Department of Invertebrate Zoology

Sapphirina auronitens

A drawing by Giesbrecht (1892) of the Copepoda, Sapphirina auronitens Claus, 1863


Karen J. OsbornResearch Zoologist

Zhang, Jinghuai, Zhang, Yanjie, Osborn, Karen and Qiu, Jian-Wen 2017. Description of a new species of Eulepethus (Annelida, Eulepethidae) from the northern South China Sea, and comments on the phylogeny of the family. Zootaxa, 4226(4): 581 doi:10.11646/zootaxa.4226.4.8

Bagge, Laura E, Osborn, Karen J and Johnsen, Sö 2016. Nanostructures and Monolayers of Spheres Reduce Surface Reflections in Hyperiid Amphipods. Current Biology, 26(22): 3071-3076. doi:10.1016/j.cub.2016.09.033

Capa, María, Osborn, Karen J. and Bakken, Torkild 2016. Sphaerodoridae (Annelida) of the deep Northwestern Atlantic, including remarkable new species of Euritmia and Sphaerephesia. ZooKeys, 615: 1-32. doi:10.3897/zookeys.615.9530

Baldwin Fergus, Jamie L, Johnsen, Sö and Osborn, Karen J. 2015. A Unique Apposition Compound Eye in the Mesopelagic Hyperiid Amphipod Paraphronima gracilis. Current Biology, 25(4): 473-478. doi:10.1016/j.cub.2014.12.010

Osborn, Karen J., Gebruk, Andrey V., Rogacheva, Antonina and Holland, Nicholas D. 2013. An Externally Brooding Acorn Worm (Hemichordata, Enteropneusta, Torquaratoridae) from the Russian Arctic. The Biological bulletin, 225(2): 113-123.

Holland, Nicholas D., Osborn, Karen J., Gebruk, Andrey V. and Rogacheva, Antonina 2013. Rediscovery and augmented description of the HMS 'Challenger' acorn worm (Hemichordata, Enteropneusta), Glandiceps abyssicola, in the equatorial Atlantic abyss. Journal of the Marine Biological Association of the United Kingdom, 93(8): 2197-2205. doi:10.1017/S0025315413000684

Priede, Imants G., Osborn, Karen J., Gebruk, Andrey V., Jones, Dan, Shale, David, Rogacheva, Antonina and Holland, Nicholas D. 2012. Observations on torquaratorid acorn worms (Hemichordata, Enteropneusta) from the North Atlantic with descriptions of a new genus and three new species. Invertebrate Biology, 131(3): 244-257. doi:10.1111/j.1744-7410.2012.00266.x

Holland, Nicholas D., Kuhnz, Linda A. and Osborn, Karen J. 2012. Morphology of a new deep-sea acorn worm (class Enteropneusta, phylum Hemichordata): A part-time demersal drifter with externalized ovaries. Journal of Morphology, 273(7): 661-671. doi:10.1002/jmor.20013

Holland, Nicholas D., Osborn, Karen J. and Kuhnz, Linda A. 2012. A new deep-sea species of harrimaniid enteropneust (Hemichordata). Proceedings of the Biological Society of Washington, 125(3): 228-240. doi:10.2988/12-11.1

Sherlock, R. E., Reisenbichler, K. R., Bush, S. L., Osborn, Karen J. and Robison, B. H. 2011. Near-field zooplankton, ice-face biota and proximal hydrography of free-drifting Antarctic icebergs. Deep Sea Research Part II: Topical Studies in Oceanography, 58: 1457-1468. doi:10.1016/j.dsr2.2010.11.025

Osborn, Karen J., Haddock, Steven and Rouse, Greg 2011. Swima (Annelida, Acrocirridae), holopelagic worms from the deep Pacific. Zoological Journal of the Linnean Society, 163(3): 663-678. doi:10.1111/j.1096-3642.2011.00727.x

Kaufmann, Ronald S., Robison, Bruce H., Sherlock, Rob E., Reisenbichler, Kim R. and Osborn, Karen J. 2011. Composition and structure of macrozooplankton and micronekton communities in the vicinity of free-drifting Antarctic icebergs. Deep Sea Research Part II: Topical Studies in Oceanography, 58: 1469-1484. doi:10.1016/j.dsr2.2010.11.026

Hull, Pincelli M., Osborn, Karen J., Norris, Richard D. and Robison, Bruce H. 2011. Seasonality and depth distribution of a mesopelagic foraminifer, Hastigerinella digitata, in Monterey Bay, California. Limnology and Oceanography, 56: 562-576. doi:10.4319/lo.2011.56.2.0562

Osborn, Karen J., Kuhnz, Linda A., Priede, Imants G., Urata, Makoto, Gebruk, Andrey V. and Holland, Nicholas D. 2011. Diversification of acorn worms (Hemichordata, Enteropneusta) revealed in the deep sea. Proceedings of the Royal Society B: Biological Sciences, 279(1733): 1646-1654. doi:10.1098/rspb.2011.1916

Osborn, Karen J., Madin, L. P. and Rouse, G. W. 2010. The remarkable squidworm is an example of discoveries that await in deep-pelagic habitats. Biology Letters, 7: 449-453. doi:10.1098/rsbl.2010.0923

Osborn, Karen J. and Rouse, Greg W. 2010. Phylogenetics of Acrocirridae and Flabelligeridae (Cirratuliformia, Annelida). Zoologica Scripta, 40(2): 204-219. doi:10.1111/j.1463-6409.2010.00460.x

Osborn, Karen J., Haddock, S. H. D., Pleijel, F., Madin, L. P. and Rouse, G. W. 2009. Deep-Sea, Swimming Worms with Luminescent "Bombs". Science, 325: 964 doi:10.1126/science.1172488

Osborn, Karen J. 2009. Relationships within the Munnopsidae (Crustacea, Isopoda, Asellota) based on three genes. Zoologica Scripta, 38: 617-635. doi:10.1111/j.1463-6409.2009.00394.x

Osborn, Karen J. and Rouse, G. 2008. Multiple origins of pelagicism within Flabelligeridae (Annelida). Molecular phylogenetics and evolution, 49: 386-392. doi:10.1016/j.ympev.2008.05.042

Osborn, Karen J., Rouse, Greg W., Goffredi, Shana K. and Robison, Bruce H. 2007. Description and Relationships of Chaetopterus pugaporcinus, an Unusual Pelagic Polychaete (Annelida, Chaetopteridae). The Biological bulletin, 212(1): 40-54. doi:10.2307/25066579

Collins, Allen G., Bentlage, Bastian, Matsumoto, G. I., Haddock, H. D., Osborn, Karen J. and Schierwater, B. 2006. Solution to the phylogenetic enigma of Tetraplatia, a worm-shaped cnidarian. Biology Letters, 2: 120-124.

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