| 释义 | peri·sphinc·tes \ˌperəˈsfiŋ(k)(ˌ)tēz\ noun
 Usage: capitalized
 Etymology: New Latin, from peri- + -sphinctes (from Greek sphinktos tightly bound, from sphingein to bind fast) — more at sphincter
 : a genus (the type of the family Perisphinctidae) comprising discoidal ammonites having bifurcating ribs not interrupted on the ventral side and being characteristic of the Upper Jurassic
 • peri·sphinc·toid \| ̷ ̷ ̷ ̷|sfiŋ(k)ˌtȯid\ adjective
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