Hughesius

Cenozoic Taxa

Hughesius tasmaniae

Edited by Lyndsey on Thu, 10/03/2011 - 11:03

Hughesius tasmaniae (Edwards and Perch-Nielsen, 1975) de Kaenel and Villa, 1996 [Ericsonia]

Description: Medium sized species of Hughesius (3-5μm long), with 4 plates in central-area.

Remarks: This species is intermediate between Clausicoccus fenestratus and Hughesius gizoensis, in terms of size, number of plates, and rim birefringence. It probably forms part of an evolutionary lineage between these species.

Original description:

Range: Palaeogene to NN9 (rare above NN3).

Synonym: Recorded as Hughesius sp. by Varol, 1989.

Geological Time Data

Geological Time Periods:

NN9

Paleogene

Biblio Reference:

Young, JR. 1998. Neogene. Calcareous nannofossil biostratigraphy. :225-265.

Notes on occurrence information:

Rare above NN3

Login or register to post comments
644 reads
Printer-friendly version
Neogene: Hughesius; Hughesius tasmaniae

Hughesius

Edited by Lyndsey on Tue, 01/03/2011 - 12:57

Genus Hughesius Varol, 1989

Description: Placolith coccoliths showing low birefringence with central area filled by 2 to 4 plates, without obvious perforations.

Remarks: There appears to be a lineage extending from Clausicoccus fenestratus via H. tasmaniae to H. gizoensis, involving size decrease and reduction of the R-units. H. tasmaniae is very similar to Clausicoccus and essentially is Clausicoccus without prominent perforations, H. gizoensis seems to have a simpler shield structure, possibly as a result of the smaller size.

Type species: H. gizoensis Varol 1989

Login or register to post comments
1059 reads
Printer-friendly version
Neogene: Clausicoccus fenestratus; Hughesius
Paleogene: Clausicoccus fenestratus

Coccolithaceae

Edited by Jeremy Young on Wed, 03/02/2010 - 00:12

FAMILY COCCOLITHACEAE Poche, 1913 emend Young & Bown 1997

Description: Coccoliths are placoliths with rim structure similar to Coccolithus: V-unit forms both distal shield and lower cycle of central-area; R-unit forms both proximal shield and upper cycle of central-area.

Genera included:

	Coccolithus - dominant genus, with central area open, spanned by a disjunct bar, or delicate axial cross (separation from Cruciplacolithus is tenuous)
	Clausicoccus - central area covered by perforate plate, common in the Palaeogene, and extends into Early Miocene
	Coronocyclus - open ring-like coccolith without shields, elements of rim complexly intergrown, apparently with outer V-unit and inner R-unit
	Cruciplacolithus - with disjunct axial cross in central area
	Hughesius - with central plate formed of 4 or fewer disjunct elements
	Solidopons - with narrow rim spanned by oblique disjunct bridge
	Chiasmolithus, Sullivania - Palaeogene genra with diagonal cross in central area

Remarks:

Login or register to post comments
3527 reads
Printer-friendly version
Neogene: Clausicoccus; Coccolithaceae; Coccolithus; Coronocyclus; Cruciplacolithus; Hughesius; Solidopons

Image

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Nanno talk

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Yahoo! Images

Flickr Images

Google Scholar

Content below this block will be hidden

Description

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Image Gallery Thumbnails

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Biodiversity Heritage Library

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Global Biodiversity Information Facility

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Morphbank Images

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

National Biodiversity Network

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

National Center for Biotechnology Information

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Wikipedia

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Specimens

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Specimens

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Specimens map

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Blog entry

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Poll

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Countries map

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Taxon Description

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Phylogenetic tree

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Geological Time

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Forum topic

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

ITIS Name

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Biography

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Extant taxa

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Mesozoic taxa

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Page

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Newsletter issue

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Webform

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Bibliography

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Scratchpads Issue Queue

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

About this site

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

ClustrMap

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Groups menu

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Apache Solr recommendations: More like this

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Apache Solr Core: Sorting

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Apache Solr Search: Current search

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Apache Solr Multisite Search: Current search

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Printer, e-mail and PDF versions

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Document Store

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Taxa

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

web pages

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Neogene

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Paleogene

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Mesozoic

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Extant taxa

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

UWho Login Block

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Active forum topics in group

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

New forum topics in group

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

Authors & Sources

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

GC taxon page

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.

GC-TEP discussion taxonomy

This block is currently either hidden, or has no content. Content (if there is any) will be displayed once it is moved above the divider.