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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

HOVASAURUS  References

Chronological

J. Piveteau (1926) "Amphibien et Reptiles Permiens" in Paleontologie de Madagascar XIII , Annls. Paleont. 15: 1 - 128

P.J. Currie (1982) " Hovasaurus Boulei, an aquatic eosuchian from the Upper Permian of Madagascar" Palaeontologia Africana 21: 99 - 168

P.J. Currie, R.L. Carroll (1984) "Ontogenetic changes in the eosuchian reptile Thadeosaurus" Journal of Vertebrate Paleontology 4 (1): 68 - 84