Shell Family of Taiwan
Nautilidae 鸚鵡螺科contain2 species in Taiwan，show1 - 2
 
Nautilidae 鸚鵡螺科：Large coiled external shell punctuated with chambers. A siphuncle penetrates each septum at center. The body housed in living chamber. Head covered with hood dorsally. Eyes of simple structure, without lense. Cirri more than 47 pairs in number, without suckers, whiplike in shape. Gills 2 pairs. Geographically limited to the tropical Indo-West Pacific.
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omenclator
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 Nautilus pompilius 鸚鵡螺  Linnaeus, 1758  
 Nautilus scrobiculatus   Lightfoot, 1786