The Fossil Record of Echinoderms

question 68

Multiple Choice

The fossil record of echinoderms

• A)is sparse with few representatives.
• B)shows echinoderms were a fairly modern group to arise.
• C)indicates early echinoderms were sessile and pentaradial but had a bilateral ancestor.
• D)suggests early echinoderms were free-swimming and bilateral but became sessile and pentaradial in recent times.
• E)is a clear and detailed history of complex echinoderm evolution.

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