Fossil Detail

C lass：Gastropoda 腹足綱
Order：Heteropoda 異足目
Family：Naticidae 玉螺科
Genus：Polinices 無臍玉螺屬
Scientific Name ：Polinices didyma didyma  (Roeding, 1798)
Chinese Name：大玉螺
Fossil Location：苗栗縣通霄鎮-通霄層（Tungshiao Formation, Tongsiao Township, Miaoli County）
Fosill Ages：更新世, Pleistocene
Reservation Location： 國立台中自然科學博物館
Inventory No.：NMNS000341,000341a-g
Size：SH1.15cm, Dia1.1cm
Reference：台灣貝類化石誌1-3:189-190, 1991
Plate：圖版三十一，圖 9-12

• Taiwan Malacofauna
• Shell specimen from Taiwan
• Shell specimen in abroad
• New species
• The shells of world
  • shell base
  • Common shells of world
• Reference of shells
• Taxonomy of Taiwan shells
• Query by Family
• Query by contour
• Shell midden
• Shell fossil
• Others
  • The Oceanic Squids of Taiwan
  • Radula and ultrastructure of shell
  • The Chinese character of shell
  • Inner beautiful spiral
• Chinese 中文