- form a 4-flagellate zygote. The
species currently recognised are: B.
bipyramidalis B. crux B. eugeniana B. simplex B. submarina
Species are distinguished...
- †Mespilocrinus
myllos †Mespilocrinus
romingeri †Metablastus †Metablastus
bipyramidalis †Metablastus
wortheni †Metacromyocrinus †Metacromyocrinus oklahomenisis...