Figure 1. The bottom dweller, Stensioella, is derived from placoderms and angel sharks and nests at the base of lobefin fish, some of which give rise to most ray fin fish, while others give rise to stem tetrapods.
Figure 1. The bottom dweller, Stensioella, is derived from placoderms and angel sharks and nests at the base of lobefin fish, some of which give rise to most ray fin fish, while others give rise to stem tetrapods.
The Pterosaur Heresies 
