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・ Pectoral sandpiper
・ Pectoral sparrow
・ Pectoral-patch cisticola
・ Pectoralis major muscle
・ Pectoralis minor muscle
・ Pectoriloquy
・ Pectus
・ Pectus carinatum
・ Pectus excavatum
・ Peculate (band)
・ Peculator (gastropod)
・ Peculator baccatus
・ Peculator hedleyi
・ Pecten (genus)
・ Pecten albicans
Pecten excavatus
・ Pecten jacobaeus
・ Pecten maximus
・ Pecten novaezelandiae
・ Pecten oculi
・ Pecten sulcicostatus
・ Pecteneremus
・ Pecteneremus albella
・ Pecteneremus decipiens
・ Pecteneremus padishah
・ Pecteneremus pharaoh
・ Pecteneremus pilatus
・ Pecteneremus walsinghami
・ Pectenobunus
・ Pectenocypris


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Pecten excavatus : ウィキペディア英語版
Pecten excavatus

''Pecten excavatus'' is a species of scallop, marine bivalve molluscs in the taxonomic family Pectinidae.
==Shell description==
In this species, the valves are greatly inequal and plano-convex in shape: the right valve is highly convex, and the left valve is correspondingly concave, an arrangement unusual within the scallop family. The valves are front-back symmetrical, however, and the ears are equal, convex, and rectangularly truncated.
It can be distinguished from the very similar species ''Pecten albicans'' by the number of ribs present on either valve. ''P. albicans'' has in the range of seven to ten ribs with a mode of eight, while those of ''P. excavatus'' range from eight to eleven or more with an average number of ten.

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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