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Revision of D. brouweri group from Mon, 14/01/2008 - 13:07

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 extensions (NN9-10)



 

 

Range: ca. NN7 to NN18

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