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Litosphaeridium too; two new dinoflagellate cyst species from the Cretaceous of California

Joyce Lucas-Clark
Litosphaeridium too; two new dinoflagellate cyst species from the Cretaceous of California
Palynology (2007) 31: 205-217

Abstract

The "Middle" Cretaceous of the Northern California Coast Ranges has yielded unusually well-preserved specimens of Litosphaeridium, some of which (Litosphaeridium arundum, Litosphaeridium bacar, Litosphaeridium conispinum, and Litosphaeridium siphoniphorum subsp. glabrum) have been analyzed in detail previously. Two other species, which were discovered later, are Litosphaeridium adnatum sp. nov. and Litosphaeridium gaponoffiae sp. nov. Litospheridium adnatum sp. nov. is most similar to Litosphaeridium siphoniphorum, but has an adnate operculum, sulcal processes, a more elongate central body, and less of the central body is covered by processes. The other, Litosphaeridium gaponoffiae sp. nov., is most similar to Litosphaeridium arundum and Litospheridium fucosum, but has goblet-shaped processes, a free operculum, a more spherical central body, and its cingular processes are not reduced as they are in Litospheridium arundum. The two species are from the late Albian based on the associated dinoflagellate cysts.


ISSN: 0191-6122
EISSN: 1558-9188
Serial Title: Palynology
Serial Volume: 31
Title: Litosphaeridium too; two new dinoflagellate cyst species from the Cretaceous of California
Author(s): Lucas-Clark, Joyce
Affiliation: Clark Geological Services, Fremont, CA, United States
Pages: 205-217
Published: 2007
Text Language: English
Publisher: American Association of Stratigraphic Palynologists, Dallas, TX, United States
References: 18
Accession Number: 2008-072324
Categories: Paleobotany
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, geol. sketch maps
N38°40'00" - N40°00'00", W124°00'00" - W122°24'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, American Association of Stratigraphic Palynologists. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200820
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