Ptychodus infraphylum Gnathostomata Agassiz, 1839

The Natural History Museum

The Natural History Museum


  • Title: Ptychodus infraphylum Gnathostomata Agassiz, 1839
  • State province: England
  • Scientific name authorship: Agassiz, 1839
  • Phylum: Chordata
  • Lowest biostrati graphic zone: Rhynchonella cuvieri Zone
  • Locality: Earl's Pit
  • Latest period or highest system: Cretaceous
  • Latest era or highest erathem: Mesozoic
  • Latest epoch or Highest series: Late Cretaceous
  • Latest eon or highest eonothem: Phanerozoic
  • Latest age or Highest age: Turonian
  • Kingdom: Animalia
  • Higher geography: Europe; United Kingdom; England; Lincolnshire; South Ferriby
  • Higher classification: Animalia; Chordata; Vertebrata; Chondrichthyes; Hybodontoidea; Ptychodontidae
  • Group: Chalk Group
  • Genus: Ptychodus
  • Formation: Upper Chalk Formation
  • Family: Ptychodontidae
  • Earliest period or lowest system: Cretaceous
  • Earliest era or lowest erathem: Mesozoic
  • Earliest epoch or lowest series: Late Cretaceous
  • Earliest eon or Lowest eonothem: Phanerozoic
  • Earliest age or Lowestst age: Turonian
  • Country: United Kingdom
  • Continent: Europe
  • Class: Chondrichthyes