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Revision of D. brouweri group from Sun, 30/12/2007 - 22:54

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

 

  • D. brouweri - with proximal ray tip extensions (NN10-18) 
  • D. asymmetricus - asymmetric 5-rayed variant of D. brouweri (common N14-16)
  • D. tamalis - 4-rayed variant of D. brouweri (common NN14-16)
  • D. triradiatus - 3-rayed variant of D. brouweri (acme NN18)
  • D. altus - complanate with very large bosses (NN15)
  • D. neorectus - very large with simple ray tips (NN10-11)
  • D. braarudii - with simple ray tips (mostly NN9-11A)
  • D. calcaris - with asymetric ray tip etension (NN9-10)  

 

 

Range: ca. NN7 to NN18

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