Atsushi Ando, PhD

Atsushi received his B.Sc. in 1997 from the Department of Geology, Shinshu University, Japan, and then the M.Sc. in 1999 and Ph.D. in 2003 from the Institute of Geology and Paleontology, Tohoku University, Japan. In the graduate courses, Atsushi started his research career with standard geochemical analyses of mid-Cretaceous marine sedimentary strata along land sections in Hokkaido (northern Japan) and at a coeval Pacific deep-sea section. To aid interpretation of the chemostratigraphic data obtained, Atsushi had gradually turned his attention to taxonomy and biostratigraphy of Cretaceous planktonic foraminifera, which continue to be centered in his main research interests up until today.

Upon completion of his Ph.D., Atsushi acquired several postdoctoral researcher positions at multiple nations, from Japan (Chiba University: 2003-2006; Research Institute for Humanity and Nature: 2006-2008) to South Korea (Pusan National University: 2008-2011) to the United States (Smithsonian Institution: 2011-2013). Through this series of experience, he developed or undertook a variety of projects of broad traditional and applied disciplines in micropaleontology and paleoenvironmental analyses, not limited to the Cretaceous Period. He sailed for a scientific cruise in 2009 (Integrated Ocean Drilling Program Expedition 324), serving as a shipboard micropaleontologist of foraminifera.

Atsushi joined BugWare in 2013 and has been regularly involved with many office-based and offshore wellsite projects since then. He had quickly become proficient in Gulf of Mexico foraminiferal biostratigraphy and has been in service for the Cretaceous, Paleogene and Neogene prospects. Meanwhile, Atsushi has been officially affiliated with the Smithsonian Institution as a Research Associate, and is actively making progress in his science whenever possible.


Ando, A., 2012, Taxonomic reexamination and type-locality assemblage characterization of the late Albian planktonic foraminifera Hedbergella yezoana Takayanagi and Iwamoto, 1962 from Japan: Journal of Foraminiferal Research, v. 42, p. 271-285, doi:10.2113/gsjfr.42.4.271.

Ando, A., 2013, Case 3620 Ticinella primula Luterbacher, 1963 (Foraminifera, Globigerinida, ROTALIPOROIDEA, ROTALIPORIDAE): proposed conservation of the specific name: Bulletin of Zoological Nomenclature, v. 70, p. 71-74.

Ando, A., 2015, Intersite discrepancy in the amplitude of marine negative ?13C excursion at the onset of early Aptian oceanic anoxic event 1a: Reconciliation through Sr isotopic screening of peculiar diagenetic overprint on the Pacific reference section (Deep Sea Drilling Project Site 463), in Neal, C.R., Sager, W.W., Sano, T., and Erba, E., eds., The Origin, Evolution, and Environmental Impact of Oceanic Large Igneous Provinces: Geological Society of America Special Paper 511, p. 329-339, doi:10.1130/2015.2511(17).

Ando, A., and Kakegawa, T., 2007, Carbon isotope records of terrestrial organic matter and occurrence of planktonic foraminifera from the Albian Stage of Hokkaido, Japan: Ocean-atmosphere ?13C trends and chronostratigraphic implications: Palaios, v. 22, p. 417-432, doi:10.2110/palo.2005.p05-104r.

Ando, A., and Huber, B.T., 2007, Taxonomic revision of the late Cenomanian planktonic foraminifera Rotalipora greenhornensis (Morrow, 1934): Journal of Foraminiferal Research, v. 37, p. 160-174, doi:10.2113/gsjfr.37.2.160.

Ando, A., and Huber, B.T., 2014, Tracing Yoshiaki Ozawa's experience from foreign study and travel: A review of personal correspondence and other auxiliary material in the Cushman Collection of Foraminifera (National Museum of Natural History, Smithsonian Institution, U.S.A.): Journal of Geography (Chigaku Zasshi), v. 123, p. 343-362, doi:10.5026/jgeography.123.343. [in Japanese with English abstract as well as full English translation online]

Ando, A., Kakegawa, T., Takashima, R., and Saito, T., 2002, New perspective on Aptian carbon isotope stratigraphy: Data from ?13C records of terrestrial organic matter: Geology, v. 30, p. 227-230, doi:10.1130/0091-7613(2002)?030<0227:NPOACI>?2.0.CO;2.

Ando, A., Kakegawa, T., Takashima, R., and Saito, T., 2003, Stratigraphic carbon isotope fluctuations of detrital woody materials during the Aptian Stage in Hokkaido, Japan: Comprehensive ?13C data from four sections of the Ashibetsu area: Journal of Asian Earth Sciences, v. 21, p. 835-847, doi:10.1016/S1367-9120(02)00112-8.

Ando, A., Kawahata, H., and Kakegawa, T., 2006, Sr/Ca ratios as indicators of varying modes of pelagic carbonate diagenesis in the ooze, chalk and limestone realms: Sedimentary Geology, v. 191, p. 37-53, doi:10.1016/j.sedgeo.2006.01.003.

Ando, A., Kaiho, K., Kawahata, H., and Kakegawa, T., 2008, Timing and magnitude of early Aptian extreme warming: Unraveling primary ?18O variation in indurated pelagic carbonates at Deep Sea Drilling Project Site 463, central Pacific Ocean: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 260, p. 463-476, doi:10.1016/j.palaeo.2007.12.007.

Ando, A., Huber, B.T., MacLeod, K.G., Ohta, T., and Khim, B.-K., 2009, Blake Nose stable isotopic evidence against the mid-Cenomanian glaciation hypothesis: Geology, v. 37, p. 451-454, doi:10.1130/G25580A.1. [Erratum on v. 37, p. 882]

Ando, A., Nakano, T., Kaiho, K., Kobayashi, T., Kokado, E., and Khim, B.-K., 2009, Onset of seawater 87Sr/86Sr excursion prior to Cenomanian-Turonian Oceanic Anoxic Event 2? New Late Cretaceous strontium isotope curve from the central Pacific Ocean: Journal of Foraminiferal Research, v. 39, p. 322-334, doi:10.2113/gsjfr.39.4.322.

Ando, A., Huber, B.T., and MacLeod, K.G., 2010, Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary: Paleobiology, v. 36, p. 357-373, doi:10.1666/09027.1.

Ando, A., Nakano, T., Kawahata, H., Yokoyama, Y., and Khim, B.-K., 2010, Testing seawater Sr isotopic variability on a glacial-interglacial timescale: An application of latest high-precision thermal ionization mass spectrometry: Geochemical Journal, v. 44, p. 347-357.

Ando, A., Khim, B.-K., Nakano, T., and Takata, H., 2011, Chemostratigraphic documentation of a complete Miocene intermediate-depth section in the Southern Ocean: Ocean Drilling Program Site 1120, Campbell Plateau off New Zealand: Marine Geology, v. 279, p. 52-62, doi:10.1016/j.margeo.2010.10.012.

Ando, A., Huber, B.T., and Premoli Silva, 2013, I., Paraticinella rohri (Bolli, 1959) as the valid name for the latest Aptian zonal marker species of planktonic foraminifera traditionally called bejaouaensis or eubejaouaensis: Cretaceous Research: v. 45, p. 275-287, doi:10.1016/j.cretres.2013.05.002.

Ando, A., Woodard, S.C., Evans, H.F., Littler, K., Herrmann, S., MacLeod, K.G., Kim, S., Khim, B.-K., Robinson, S.A., and Huber, B.T., 2013, An emerging palaeoceanographic 'missing link': multidisciplinary study of rarely recovered parts of deep-sea Santonian-Campanian transition from Shatsky Rise: Journal of the Geological Society, v. 170, p. 381-384, doi:10.1144/jgs2012-137. [in Special section]

Ando, A., Huber, B.T., MacLeod, K.G., and Watkins, D.K., 2015, Early Cenomanian "hot greenhouse" revealed by oxygen isotope record of exceptionally well-preserved foraminifera from Tanzania: Paleoceanography, v. 30, doi:10.1002/2015PA002854.

Kusaka, S., Ando, A., Nakano, T., Yumoto, T., Ishimaru, E., Yoneda, M., Hyodo, F., and Katayama, K., 2009, A strontium isotope analysis on the relationship between ritual tooth ablation and migration among the Jomon people in Japan: Journal of Archaeological Science, v. 36, p. 2289-2297, doi:10.1016/j.jas.2009.06.013.

Nakano, T., Tayasu, I., Yamada, Y., Hosono, T., Igeta, A., Hyodo, F., Ando, A., Saitoh, Y., Tanaka, T., Wada, E., and Yachi, S., 2008, Effect of agriculture on water quality of Lake Biwa tributaries, Japan: Science of the Total Environment, v. 389, p. 132-148, doi:10.1016/j.scitotenv.2007.08.042.

Nakano-Ohta, T., Kubota, T., Ando, A., Fujii, T., Fukutani, S., Nakata, E., Nakano, T., and Mahara, Y., 2009, Isotopic investigations for the origin of relic from the Matsusaki site, Japan: Applied Radiation and Isotopes, v. 67, p. 1479-1483, doi:10.1016/j.apradiso.2009.02.047.

Ohta, T., Mahara, Y., Kubota, T., Saito, Y., Fukutani, S., Fujii, T., Ando, A., Nakata, E., Nakano, T., Abe, Y., and Tatematsu, A., 2010, Radionuclides in ancient relics obtained from the Matsusaki site and the Hirohata shellmound on the Pacific coast of Japan: Radiocarbon, v. 52, p. 526-533.


The 2011 W. Storrs Cole Memorial Research Award, the Geological Society of America and the Cushman Foundation for Foraminiferal Research


Member, the American Geophysical Union

Member, the Cushman Foundation for Foraminiferal Research

Member, the Geological Society of America