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美丽的外星人化石 - 55 个标本 - 双面 - 动物化石片 - Ascocystites - Eocrinoids
编号 79974429
编号 79974429
A strange well preserved primitive echinoderm from the Ordovician rocks of Morocco.
Edrioasteroidea is an extinct class of echinoderms. In living, it would have resembled a pentamerously symmetrical disc or cushion.
They were obligate encrusters and attached themselves to inorganic or biologic hard substrates.
Comes with a disply /locality label.
Found:- Ktaoua Formation, Ordovician Period, Mount Boutshafrin, Nr. Alnifi, Moroco, North Africa
Age:- 470 Million Years Old
Overall Size = 7 cm wide by 6 cm high.