Kalpana Kalpana (Editor)

Procolophonidae

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Kingdom
  
Superfamily
  
Higher classification
  
Order
  
Procolophonomorpha

Clade
  
Phylum
  
Chordata

Rank
  
Family

Procolophonidae palaeoscomvertebratesanapsidaimagesMolochcc0

Similar
  
Parareptilia, Procolophon, Procolophonoidea, Pareiasaur, Millerettidae

Procolophonidae is an extinct family of parareptiles from the Permian and Triassic periods.

They were shaped like stocky lizards, with broad-cheeked skulls. Their cheeks sported a stout backward-pointing spike. Hypsognathus, from North America, had many cheek spikes. Procolophon, the genus after which the group was named, is unusual. Their skulls resemble the turtles', sharing a posttemporal fenestra. Accordingly, they have historically been classed alongside the turtles under the Anapsida.

Up to the early Triassic, their teeth were sharp, indicating an insectivorous diet. Later in the Triassic their teeth became broader, indicating a switch to a herbivorous diet. They became extinct at the end of the Triassic.

Recent findings indicate that these animals may have been found in Antarctica in the Early Triassic, thereby the earliest evidence of tetrapods in the Antarctic.

Phylogeny

Below is a cladogram from Ruta et al. (2011):

References

Procolophonidae Wikipedia


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