Onychodus is a genus of prehistoric lobe-finned fish with the Devonian time period, about 400 million years ago. Noted for its distinct attributes, Onychodus was an early example of sarcopterygian fish, which includes ancestors of recent lungfish and tetrapods. With their Stone Exocranium on the entrance of their entire body, https://bookmarkboom.com/story18588151/a-simple-key-for-aquarium-accessories-unveiled