These are segments of the columnar stem of what fossil echinoderm animal? Each disk is a single crystal of calcium carbonate, and in life the animal's living tissue threaded through the hole passing through

asked Jan 27, 2021 217k views

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3 votes

Answer:

Crinoids.

Step-by-step explanation:

These are segments of crinoids.

WBlasko answered Feb 2, 2021

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