"Chondropterygian" Natural Recordings by Native Speakers
The term "chondropterygian" refers to a group of aquatic vertebrates, specifically a type of prehistoric fish that lived during the Paleozoic Era. They are characterized by having cartilaginous skeletons and paired fins, and are thought to be the ancestors of modern ray-finned fishes (Actinopterygii) and lobe-finned fishes (Sarcopterygii).
The term "Chondrostei" refers to a group of bony fishes that are characterized by having a type of skeleton called chondral ribcage, which is made up of cartilage. They are a fossil group that lived during the Paleozoic and Mesozoic eras, and are now extinct. Chondrostei were likely fish that were adapted to living in shallow, coastal waters.