Taxonomy of the fossil marine diatom resting spore morpho-genera Xanthioisthmus Suto gen. nov. and Quadrocistella Suto gen. nov. in the North Pacific and Norwegian Sea

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doi: 10.1144/jm.25.1.3
Author(s): Suto, Itsuki
Author Affiliation(s): Primary:
National Science Museum, Department of Geology, Tokyo, Japan
Volume Title: Journal of Micropalaeontology
Source: Journal of Micropalaeontology, Vol.25(Part 1), p.3-22. Publisher: British Micropalaeontological Society, London, United Kingdom. ISSN: 0262-821X
Note: In English. 53 refs.; illus., incl. 4 plates, 4 tables, sketch map
Summary: The morphology and taxonomy of the fossil diatom resting spore morpho-genera Xanthioisthmus Suto gen. nov. and Quadrocistella Suto gen. nov. are described. The two new genera are probably fossil resting spores of the marine diatom genus Chaetoceros. They were studied by examining samples from DSDP Sites 436, 438 (northwest Pacific) and 338 (Norwegian Sea), and the Newport Beach Section (California). The genus Xanthioisthmus is characterized by an elongate valve composed of two flat circles joined together by a hyaline broad isthmus and includes five species: X. biscoctiformis (Forti) Suto comb. nov., X. specticularis (Hanna) Suto comb. nov., X. panduraeformis (Pantocsek) Suto comb. nov., X. praemaculata sp. nov. and X. maculata (Hanna) Suto comb. nov. The genus Quadrocistella differs from Xanthioisthmus by its elongate and rectangular valve and bears five new species: Q. rectagonuma sp. nov., Q. tubera sp. nov., Q. paliesa sp. nov., Q. montana sp. nov. and Q. palmesa sp. nov.
Year of Publication: 2006
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
ODP Ocean Drilling Program
Key Words: 09 Paleontology, Paleobotany; Algae; Arctic Ocean; Bacillariophyceae; California; Capistrano Formation; Cenozoic; Centrales; DSDP Site 338; DSDP Site 436; DSDP Site 438; Deep Sea Drilling Project; Diatoms; IPOD; Leg 38; Leg 56; Leg 57; Microfossils; Monterey Formation; Morphology; Neogene; New names; New taxa; Newport Beach California; North Pacific; Norwegian Sea; Ocean Drilling Program; Orange County California; Pacific Ocean; Plantae; Quadrocistella; Spores; Taxonomy; Tertiary; United States; Xanthioisthmus
Coordinates: N674706 N674707 E0052316 E0052315
N403748 N403748 E1431448 E1431448
N395557 N395558 E1453329 E1453328
N332500 N335400 W1172600 W1180800
Record ID: 2006079588
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom