Phylum Echinodermata 棘皮動物門


Class Echinoidea 海膽綱


Family Clypeasteridae 楯海膽科


Scientific name Clypeaster virescens


Chinese name 綠楯海膽


Author Doderlein, 1885


Size 54 mm


Description Sea urchin test diameter - 54 mm, taken with tangle net at depth of 100-200 meters in Balicasag Island, Bohol, Philippines.




 


 


Clypeaster virescens, 綠楯海膽, Aboral view(反口面).






 


 


Clypeaster virescens, 綠楯海膽, Oral view(口面).






 


 


Clypeaster virescens, 綠楯海膽, Petaloid area (瓣狀區域)




 


 


Clypeaster virescens, 綠楯海膽, Lt. lateral view(左側面).






 


 


Clypeaster virescens, 綠楯海膽, Posterior view(後端).



 


 


Clypeaster virescens, 綠楯海膽, Petaloid area (瓣狀區域)



 


 


Clypeaster virescens, 綠楯海膽, Apical system (頂系) & Posterior paired petals (後瓣帶對)



 


 


Clypeaster virescens, 綠楯海膽, Apical system (頂系)



 


 


Clypeaster virescens, 綠楯海膽, Lt side of Posterior paired petals (後瓣帶對), Poriferous zone (有孔部) & Interporiferous zone (無孔部)



 


 


Clypeaster virescens, 綠楯海膽, Peristome (口圍)



 


 


Clypeaster virescens, 綠楯海膽, Periproct (肛圍)



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