BRAZIL
PARANA STATE
IRATY FORMATION
KUNGURIAN STATE
UPPERMOST ROTILEGENDES EPOCH
MIDDLE PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: PARAREPTILIA OLSON 1947
INFRACLASS: INCERTAE SEDIS
ORDER: PROGANOSAURIA BAUR, 1887
Family: MESOSAURIDAE Baur, 1889
Stereosternum tumidum
= Mesosaurus tumidum
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BRAZIL
PARANA STATE
ITAPETININQUA
IRATY FORMATION
KUNGURIAN STATE
UPPERMOST ROTILEGENDES EPOCH
MIDDLE PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: PARAREPTILIA OLSON 1947
INFRACLASS: INCERTAE SEDIS
ORDER: PROGANOSAURIA BAUR, 1887
Family: MESOSAURIDAE Baur, 1889
Stereosternum tumidum
= Mesosaurus tumidum
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BRAZIL
PARANA STATE
SAO MATEUS DO SUL
IRATY FORMATION
KUNGURIAN STATE
UPPERMOST ROTILEGENDES EPOCH
MIDDLE PERMIAN
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: REPTILIA LAURENTI, 1768
SUBCLASS: PARAREPTILIA OLSON 1947
INFRACLASS: INCERTAE SEDIS
ORDER: PROGANOSAURIA BAUR, 1887
Family: MESOSAURIDAE Baur, 1889
Mesosaurus tenuidens
Gen sp indet = Mesosaurus or Stereosternum
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