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GEOREF RECORD

Exochosphaeridium alisitosense n. sp.; a new gonyaulacoid dinoflagellate from the Albian of Baja California, Mexico

Javier Helenes
Exochosphaeridium alisitosense n. sp.; a new gonyaulacoid dinoflagellate from the Albian of Baja California, Mexico
Micropaleontology (2000) 46 (2): 135-142

Abstract

A new species of skolochorate dinoflagellate cyst, Exochosphaeridium alisitosense, from upper Albian strata in Baja California, Mexico is described. The genus Exochosphaeridium is emended to include fossil dinoflagellate cysts with nontabular to intratabular processes, occasionally modified in the antapical area and with a short apical horn, and assigned to the subfamily Cribroperidinioideae. E. alisitosense, has intratabular processes and a reticulate antapical area that together with the adjacent paraplates, delineates a symmetrical sexiform arrangement with dextral torsion. This species also has an S-type ventral organization with an A/ai paratabulation pattern.


ISSN: 0026-2803
Coden: MCPLAI
Serial Title: Micropaleontology
Serial Volume: 46
Serial Issue: 2
Title: Exochosphaeridium alisitosense n. sp.; a new gonyaulacoid dinoflagellate from the Albian of Baja California, Mexico
Author(s): Helenes, Javier
Affiliation: C.I.C.E.S.E., Departamento de Geologia, Ensenada, Mexico
Pages: 135-142
Published: 2000
Text Language: English
Publisher: American Museum of Natural History, New York, NY, United States
References: 28
Accession Number: 2001-049486
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., 2 plates, sketch map
N28°00'00" - N28°00'00", W114°00'00" - W114°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200115
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