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Sand Dollar

December 30th, 2004:

 

Sand dollars are of the phylum Echinodermata, class Echinoidea. Xy found this one on the beach in South Carolina.

 

Back when I was working on Interactive Taxonomic Zoology, I knew the phylum and class for lots of creatures. But while walking on the beach, I found I’d forgotten. I couldn’t even remember the three classes of sponges.

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Taken on December 29, 2004