what sea animals are most closely related to crinoids?
- ?Lv 76 months ago
Crinoids are commonly known as "sea lilies" as they look like fossil flowers. They are however animals closely related to starfish and sea urchins.
- busterwasmycatLv 76 months ago
Sea urchins perhaps? I don't know what the current thinking on descent of those different classes would be. Could be that brittle stars are closer. What is meant by "most closely", as in "How do we define it and determine it (what is the means of measurement)"? I am not certain we know where the common ancestor lies on that tree.