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Phylum Echinodermata 棘皮動物門


Class Echinoidea 海膽綱


Family Arachnoididae 蛛網海膽科


Scientific name Arachnoides placenta


Chinese name 扁平蛛網海膽


Author Linnaeus, 1758


Size 61x8mm


Description Sea Urchin, 60mm, taken in Olango Island, Cebu, Philippines.


 


 


 


Arachnoides placenta, 扁平蛛網海膽, Aboral view(反口面).








 


 


Arachnoides placenta, 扁平蛛網海膽, Apical system (頂系)




 


 


Arachnoides placenta, 扁平蛛網海膽, Oral view(口面).






 


 


Arachnoides placenta, 扁平蛛網海膽, Lt. lateral view(左側面).





 


 


Arachnoides placenta, 扁平蛛網海膽, Posterior view(後端).







 


 


Arachnoides placenta, 扁平蛛網海膽, Periproct (肛圍)





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