†Psephophorus polygonus von Meyer 1847 (leatherback)

Reptilia - Testudines - Dermochelyidae

Synonym: Psephophorus calvertensis Palmer 1909

Belongs to Psephophorus according to R. E. Weems 2023

See also Chesi and Delfino 2006, Delfino et al. 2013, Hay 1930, Köhler 1995, Peters et al. 2019 and Zug 2001

Sister taxa: Psephophorus pseudostracion, Psephophorus rupeliensis, Psephophorus scaldii, Psephophorus terrypratchetti

Type specimens:

  • Psephophorus polygonus: NHMW 2011/0330/0001 (neotype), a partial shell (a slab containing ridge and non-ridge ossicles)
  • Psephophorus calvertensis: USNM 6059, a partial shell. Its type locality is Plum Point, Zone 9, which is in a Burdigalian marine claystone in the Calvert Formation of Maryland.

Ecology: aquatic durophage-piscivore

Distribution:

• Miocene of Italy (2 collections), the Netherlands (1), Slovakia (1), United States (9: Maryland, Virginia)

Total: 13 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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