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・ Pedra Azul National Park
・ Pedra Badejo
・ Pedra Badejo lagoons Important Bird Area
・ Pedra Bela
・ Pedra Bonita
・ Pedra Branca
・ Pedra Branca (Tasmania)
・ Pedra Branca dispute
・ Pedra Branca do Amapari
・ Pedra Branca skink
・ Pedra Branca, Ceará
・ Pedra Branca, Paraíba
・ Pedino, Kilkis
・ Pedino, Lemnos
・ Pedinogyra rotabilis
Pedinoida
・ Pedinomonadaceae
・ Pedinomonas
・ Pediobius
・ Pediobomyia
・ Pediobopsis
・ Pediocactus
・ Pediocactus bradyi
・ Pediocactus despainii
・ Pediocactus knowltonii
・ Pediocactus peeblesianus
・ Pediocactus sileri
・ Pediocactus winkleri
・ Pediocharis
・ Pediococcus


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Pedinoida : ウィキペディア英語版
Pedinoida

Pedinoida is an order of sea urchins, containing the single living genus ''Caenopedina''. The group was much more diverse during the Mesozoic, and represents the oldest surviving order of euechinoid sea urchins.
They are distinguished from other sea urchins by the presence of a rigid test with tessellated plates. While their primary spines are solid, the smaller ones may be hollow, further distinguishing them from the closely related orders Diadematoida and Echinothurioida, which possess only hollow spines.
==References==

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抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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