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Note: Do not rely on this information. It is very old.
Platycrinus
Platycrinus, the type-genus of the Platycrinidce, an extinct family of Crinoids or Sea-lilies. Their remains are abundant in the limestones of the Carboniferous period.
Platycrinus, the type-genus of the Platycrinidce, an extinct family of Crinoids or Sea-lilies. Their remains are abundant in the limestones of the Carboniferous period.