Onodera, Jonaotaro; Takahashi, Kozo (2012): Abundances and ebridian skeleton contents from IODP Exp302 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.787535, Supplement to: Onodera, J; Takahashi, K (2009): Middle Eocene ebridians from the central Arctic Basin. Micropaleontology, 55(2-3), 187-208
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Abundant and diversified ebridians recovered during IODP Expedition 302 (ACEX) have been identified and counted in order to establish their taxonomy and to decipher the biostratigraphic potential of ebridians in the central Arctic Ocean. In the ACEX samples these fossils are preserved in Lithologic Units 1/6 and 2, which consist mainly of dark silty clay and biosiliceous ooze, respectively. Thirty taxa have been distinguished, three of which are described as new species (Ammmodochium lomonosovense, Pseudammodochium karyon, and pseudammodochium psichion). The most dominant ebridian species is Pseudammodochium dictyoides throughout the biosiliceous section. The second dominant species varies alternately throughout the section. Based on the characteristic occurrences of major ebridian taxa, the ebridian assemblageswere divided into GroupsAtoDin stratigraphic order. The ebridian assemblages in piston core USGS Fl-422 from the Alpha Ridge probably correlate to our assemblage Group A of early middle Eocene age, although rare younger taxa are irregularly included.
Project(s):
Coverage:
Median Latitude: 87.893880 * Median Longitude: 137.771180 * South-bound Latitude: 87.866580 * West-bound Longitude: 136.177350 * North-bound Latitude: 87.921180 * East-bound Longitude: 139.365010
Date/Time Start: 2004-08-19T00:00:00 * Date/Time End: 2004-08-27T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Onodera, J; Takahashi, K (2012): (Table 2) Mean abundance of ebridian taxa in each ebridian assemblage group from IODP Exp302. https://doi.org/10.1594/PANGAEA.787524
- Onodera, J; Takahashi, K (2012): (Appendix 1) Ebridian skeleton contents from IODP Exp302. https://doi.org/10.1594/PANGAEA.787376