2011年6月22日 星期三

Plesiodiadema indicum 26x23.6mm, with spine

Phylum Echinodermata 棘皮動物門


Class Echinoidea 海膽綱


Family Aspidodiadematidae


Scientific name Plesiodiadema indicum


Chinese name


Author Döderlein, 1900


Size 26x23.6mm


Description Sea Urchin, diameter: 26x23.6mm, taken in Nan-Fan-au, Yilan, NE. Taiwan.


 


 


 


 


Plesiodiadema indicum, Aboral view(反口面).



 


 


Plesiodiadema indicum, Lateral view(側面), ambulacral area(步帶區).




 


 


Plesiodiadema indicum, Lateral view, interambulacral area(間步帶區).





 


 


Plesiodiadema indicum, Oral view(口面).



 


 


Plesiodiadema indicum, Peristome (口圍)



 


 


Plesiodiadema indicum, Primary spine(一級刺).









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