Pyxidinopsis protospinosus

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"protospinosus" Zevenboom and Santarelli in Zevenboom, 1995, p.154, pl.9, figs.4–8.  Holotype: Zevenboom, 1995, pl.9, figs.7–8.  Name not validly published: considered a manuscript name.  The epithet is correctly rendered as "protospinosus", not "protospinosis".  Age: late early Miocene–earliest middle Miocene.

Parent: Pyxidinopsis