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Blastoid Fossils for Sale

Blastoid Fossils for Sale

Blastoids (class Blastoidea) are an extinct type of stemmed echinoderm, often referred to as sea buds. They first appear, along with many other echinoderm classes in the Ordovician period.  They reached their greatest diversity in the Mississippian subperiod of the Carboniferous period.

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