Phylum: Echinodermata 棘皮動物門
Class: Echinoidea 海膽綱
Family: Laganidae 餅乾海膽科
Scientific name: Laganum depressum
Chinese name: 薄餅乾海膽
Author: Lesson, 1841
Size: 42 x41x 8mm
Description: Sea Urchins, test diameter: 42mm , taken in Olango Island , Cebu , Philippines .
Laganum depressum, 薄餅乾海膽, Aboral view(反口面).
Laganum depressum, 薄餅乾海膽, Petaloid area (瓣狀區域)
Laganum depressum, 薄餅乾海膽, Apical system (頂系)
Laganum depressum, 薄餅乾海膽, Oral view(口面).
Laganum depressum, 薄餅乾海膽, Peristome (口圍)
Laganum depressum, 薄餅乾海膽, Periproct (肛圍)
Laganum depressum, 薄餅乾海膽, Lt. lateral view(左側面).
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