Home › nanno-taxonomy › Nannoliths › Discoasteraceae › Discoaster › D. brouweri group

Revision of D. brouweri group from Mon, 14/01/2008 - 12:58

Mon, 21/01/2008 - 16:09 — Jeremy Young
Citation: 
D. brouweri group of Young 1998

6-rayed discoasters without bifurcations, and forms closely related to D. brouweri with 3 to 5 rays.

Taxa included

 brouweri.jpg D. brouweri - with proximal ray tip extensions (NN10-18)
 asymmetricus.jpg D. asymmetricus - asymmetric 5-rayed variant of D. brouweri (common NN14-16)
 tamalis.jpg D. tamalis - 4-rayed variant of D. brouweri (common NN14-16)
 triradiatus.jpg D. triradiatus - 3-rayed variant of D. brouweri (acme NN18)
 altus.jpg D. altus - complanate with very large bosses (NN15)
 braarudii.jpg

D. braarudii - with simple ray tips (mostly NN9-11A)

D. neorectus - very large with simple ray tips (NN10-11)

 calcaris.jpg D. calcaris - with asymetric ray tip etension (NN9-10)



 

 

Range: ca. NN7 to NN18

Post new comment

The content of this field is kept private and will not be shown publicly.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
  • Use <bib>...</bib> to insert automatically numbered references.
  • You may quote other posts using [quote] tags.
  • Glossary terms will be automatically marked with links to their descriptions. If there are certain phrases or sections of text that should be excluded from glossary marking and linking, use the special markup, [no-glossary] ... [/no-glossary]. Additionally, these HTML elements will not be scanned: a, abbr, acronym, code, pre.
  • Insert Google Map macro.

More information about formatting options

Scratchpads developed and conceived by: Vince Smith, Simon Rycroft & Dave Roberts