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 Introduction

LEPOSPONDYLI

EUREPTILIA

SYNAPSIDA

PARAREPTILIA

DIADECTOMORPHA

ANTHRACOSAUROIDEA

TEMNOSPONDYLI

UNIDENTIFIED TETRAPODS

Stratigraphic chart of the lower Permian (partial)

Phylogenetic Relationships

Content updated October 16, 2005

 

CHELIDERPETON

Temnospondyli-Archegosauroidea-Intasuchidae

                      

Above: pictures of  the skull of the same skeleton. From  Niederkirchen beds - Germany.  Lower Permian.

Abbreviations: an, angular;  d, dentary;  f, frontal;  ju, jugal;  la, lacrimal;  mx, maxilla;  na, nasal;  p, p, parietal;  pmx, premaxilla;  po, postorbital;  pp, postparietal;  prf, prefrontale;  ptf, postfrontal;  qj, quadratojugal; sq, squamose;  st, supratemporal;  t, tabular