ENGLAND

ISLE OF WIGHT COUNTY

BRIGHTSTONE BAY

WESSEX FORMATION

WEALDEN GROUP

VALANGINIAN-HAUTERIVIAN STAGE

NEOCOMIAN SUBEPOCH- BARREMIAN STAGE

LOWER GALLIC SUBEPOCH

EARLY CRETACEOUS EPOCH

EARLY CRETACEOUS

STEM: TETRAPODA GOODRICH, 1930

SUPERCLASS: AMNIOTA HAECKEL, 1866

CLASS: REPTILIA LAURENTI, 1768

SUBCLASS: CHELONOMORPHA KUHN, 1960

SUPERCOHORT: TESTUNINATA KLEIN, 1760 (sensu JOYCE et al, 2004)

CLADE NAME: MESOCHELYDIA JOYCE, 2017

CLADE NAME: PERICHELYDIA JOYCE, 2017

Family: HELOCHELYDRIDAE Nopcsa, 1928

Helochelydra nopcsai

_____________________________________________________________________________________