Akiba, Fumio; Yanagisawa, Yukio (1998): Thalassiosira castanea, a new diatom species useful for the late Miocene diatom biostratigraphy in the North Pacific. Kogyo Gijutsu-in-Chishitsu Chosajo, Kawasaki, Japan, Chishitsu Chosajo Geppo = Bulletin of the Geological Survey of Japan, 49 (4), 179-185, georefid:1999-030467

Abstract:
A new stratigraphically useful Neogene diatom species Thalassiosira castanea Akiba et Yanagisawa is described. The species has a very short range in the lower part of the Upper Miocene Neodenticula kamtschatica - Nitzschia rolandii Subzone (NPD 7Ba) of the N. kamtschatica Zone (NPD 7B). The first occurrence of this species is coincident with the boundary between this zone and the underlying Rouxia californica Zone (NPD 7A), and hence it is a good marker for this boundary. Thalassiosira spinosa Schrader (1976), a species which bears a close resemblance to Thalassiosira castanea n. sp., is a later homonym of Thalassiosira spinosa Simonsen (1974), and therefore it is herein renamed Thalassiosira spinoconvexa Akiba et Yanagisawa nom. n.
Coverage:
West: 143.1448 East: 164.4249 North: 53.0035 South: 40.2800
Relations:
Expedition: 19
Site: 19-183
Site: 19-192
Expedition: 57
Site: 57-438
Expedition: 87
Site: 87-584
Data access:
Provider: SEDIS Publication Catalogue
Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=1999-030467 (c.f. for more detailed metadata)
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