中新統波太層産新珪藻の追加記載

• 小村 精一

  ジオサイエンス株式会社

書誌事項

タイトル別名

• Additional descriptions of the new diatoms from the Miocene Nabuto Formation, central Japan

抄録

Five new genera are described from observations by SEM and they are all monotypic: (1)Streptommion torsivum represents a linear, twisted araphid with occelli of different sizes on each apical mantle; (2) Sagittula transversaria is also an araphid like Eunotogramma, carrying on the ventral mantle a distinctive wall organelle similar to a rimoportula; (3) Gyropandorus annulatus involves a naviculoid having the axial raphe reduced within the panduriform hoop of alveolar rows on the valve; (4) Apterosoma translucida, similar to a Plagiotropis in gross morphology, is characterized by a canal raphe system which lacks fibulae and helictoglossae; finally (5) Eupterotrum pulcherum bears a close resemblance to Entornoneis but differs in the framework of alar canal and by having the elaborate girdle bands.<BR>Rimobulla is explained in detail as a new organelle within the mantle wall and is compared to the rimoportula.

収録刊行物

• Diatom

  Diatom 13 (0), 63-81, 1997

  The Japanese Society of Diatomology

キーワード

• Miocene diatoms
• Nabuto Formation
• new genera
• rimobulla
• wall organelle

詳細情報

• CRID: 1390282680397579648
• NII論文ID: 130003356353
• DOI: 10.11464/diatom1985.13.0_63
• ISSN: 09119310
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可