Phylum: Echinodermata 棘皮動物門
Class: Echinoidea 海膽綱
Family: Cidaridae 頭帕海膽科
Scientific name: Eucidaris metularia
Chinese name: 冠棘真頭帕海膽
Author: Lamarck, 1816
Size: 13x8mm
Description: Sea Urchin, test diameter: 13x8mm, taken in Olango Island, Cebu, Philippines.
Eucidaris metularia, Aboral view(反口面).
Eucidaris metularia, Apical system (頂系)
Eucidaris metularia, Oral view(口面).
Eucidaris metularia, Peristome (口圍)
Eucidaris metularia, Lateral aboral view(側反口面).
Eucidaris metularia, Lateral view(側面).
Eucidaris metularia, 叉棘 (pedicellariae)
Eucidaris metularia, Primary spine(一級刺).
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