On the primary division of the Reptilia into two sub-classes, Synapsida and Diapsida

H. F. Osborn

1903

Article

Science 17(424):275-276

Find it at:

Taxa discussed in this work:

• Diapsida
• Mosasauroidea
• Protherosauria
• Synapsida

Taxonomy:

• Protherosauria belongs to Synapsida - Osborn (1903)