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Perisphinctes
Sign in to savePerisphinctes is an extinct genus of ammonite cephalopod. They lived during the Middle to Late Jurassic epochs and serve as an index fossil for that time period. The species P. boweni was named after the English chemist and geologist E. J. Bowen (1898–1980).
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Perisphinctes is an extinct genus of ammonite cephalopod. They lived during the Middle to Late Jurassic epochs and serve as an index fossil for that time period. The species P. boweni was named after the English chemist and geologist E. J. Bowen (1898–1980).
==Etymology== The genus name Perisphinctes is derived from the greek prefix peri- (περί), meaning "around," and sphinctes (from σφίγγω, sphingō, "to bind tightly"), referring to the tightly coiled ammonite shell.