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ecphora
Ecphora is the common name for a group of extinct predatory marine gastropod mollusks in the family Muricidae, the rocks snails or murexes. The common name is based on the first officially described genus, ''Ecphora''. The entire lineage of these ocenebrinid murexes are descended from the Eocene murex, ''Tritonopsis''. Ecphoras are indigenous to the North American Eastern Seaboard, being found in marine strata from the Late Eocene until their extinction during the Pliocene. Many ecphora species are important index fossils.
== Etymology ==
The name "Ecphora" is Greek, meaning "bearing out." The word was originally used by Vitruvius to signify the projecture of a member or moulding of a column, and here refers to the distinctive "T-shaped" ribs that project from the shell.〔Oxford English Dictionary, "Ecphora" entry.〕
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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