Reptile Evolution
 
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Berman DS and Reisz RR 1982. Restudy of Mycterosaurus longiceps (Reptilia, Pelycosauria) from the Lower Permian of Texas. Annals of Carnegie Museum 51, 423–453.

Botha-Brink J and Modesto SP 2009. Anatomy and Relationships of the Middle Permian Varanopid Heleosaurus scholtzi Based on a Social Aggregation from the Karoo Basin of South Africa. Journal of Vertebrate Paleontology 29(2):389-400.

Ivahnenko MF 2000. Cranial morphology and evolution of Permian Dinomorpha (Eotherapsida) of eastern Europe. Paleontological Journal 42(9):859-995. DOI: 10.1134/S0031030108090013

Broom R 1907. On some new fossil reptiles from the Karroo beds of Victoria West, South Africa. Transactions of the South African Philosophical Society 18:31–42. .

Willistion SW 1915. A New Genus and Species of American Theromorpha: Mycterosaurus longiceps. The Journal of Geology 23(6):554-559.

wiki/Mycterosaurus
wiki/Nikkasaurus

 
Protodiapsida
Heleosaurus
Mycterosaurus
Mesenosaurus
 
Archaeovenator
Broomia
Erpetonyx
Milleropsis
 
Diapsida
Petrolacosaurus
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Youngina SAM K7710
Youngina BPI 375
 
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Youngina BPI 3859
 
 

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