An endobiont-bearing allogromiid from the Santa Barbara Basin : implications for the early diversification of foraminifera
MetadataShow full item record
Our current understanding of paleoecology and paleoceanography is largely based on the superb Phanerozoic fossil record of foraminiferan protists. The early history of the group is unresolved, however, because basal foraminiferans (allogromiids) are unmineralized and thus fossilize poorly. Molecular-clock studies date foraminiferal origins to the Neoproterozoic, but the deep sea – one of Earth’s most extensive habitats and presently a significant fraction of basal foraminiferal diversity— was probably anoxic at that time and, until now, anaerobic allogromiids were unknown. Molecular, cell and ecological analyses reveal the presence of a previously unknown allogromiid inhabiting anoxic, sulfidic deep-sea sediments (Santa Barbara Basin, California, USA). The fact that the new foraminifer harbors prokaryotic endobionts implicates symbiogenesis as a driving force in early foraminiferal diversification.
Author Posting. © American Geophysical Union, 2006. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 111 (2006): G03002, doi:10.1029/2005JG000158.
Suggested CitationArticle: Bernhard, Joan M., Habura, Andrea, Bowser, Samuel S., "An endobiont-bearing allogromiid from the Santa Barbara Basin : implications for the early diversification of foraminifera", Journal of Geophysical Research 111 (2006): G03002, DOI:10.1029/2005JG000158, https://hdl.handle.net/1912/1202
Showing items related by title, author, creator and subject.
Keigwin, Lloyd D.; Pilskaln, Cynthia H. (2014-10-09)We report planktonic foraminiferal fluxes (accumulation rates) and oxygen isotopes (δ18O) from a nine-month sediment trap deployment, and δ18O from three sediment cores in Jordan Basin, Gulf of Maine. The sediment trap was ...
The Guaymas Basin hiking guide to hydrothermal mounds, chimneys, and microbial mats : complex seafloor expressions of subsurface hydrothermal circulation Teske, Andreas; de Beer, Dirk; McKay, Luke J.; Tivey, Margaret K.; Biddle, Jennifer F.; Hoer, Daniel; Lloyd, Karen G.; Lever, Mark A.; Røy, Hans; Albert, Daniel B.; Mendlovitz, Howard P.; MacGregor, Barbara J. (Frontiers Media, 2016-02-18)The hydrothermal mats, mounds, and chimneys of the southern Guaymas Basin are the surface expression of complex subsurface hydrothermal circulation patterns. In this overview, we document the most frequently visited features ...
Taxonomic notes on the abyssal agglutinated benthic foraminifera of the HEBBLE area (lower Nova Scotian Continental Rise) Kaminski, Michael A. (Woods Hole Oceanographic Institution, 1983-09)Eighty species and morphological varieties of agglutinated benthic foraminifera were identified in sediments from the HEBBLE Site (4800 m depth) and the HEBBLE Shallow Site (4185 m) on the lower Nova Scotian Continental ...