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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

RICHARDS SPUR TEMNOSPONDYL

SKELETAL ELEMENTS

References

1) Richards Spur temnospondyl neural spines

2) Richards Spur temnospondyl scapula

3) Richards Spur temnospondyl humerus (Acheloma)

4) Richards Spur temnospondyl ilium