| rdfs:comment | - The Leptosphinctinae is a subfamily of perisphinctid ammonites from the middle Jurassic, named by Arkell, 1950, characterized by generally involute shells, commonly ribbed and with a deep umbilicus. Includes the following genera: Leptosphinctes, Bajocisphinctes, Bigotites, Prorsisphinctes, and Vermisphinctes.
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| abstract | - The Leptosphinctinae is a subfamily of perisphinctid ammonites from the middle Jurassic, named by Arkell, 1950, characterized by generally involute shells, commonly ribbed and with a deep umbilicus. Includes the following genera: Leptosphinctes, Bajocisphinctes, Bigotites, Prorsisphinctes, and Vermisphinctes.
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