The polypterids (bichirs and ropefish) are extant basal actinopterygian (ray-finned) fishes that breathe air and share similarities with extant lobe-finned sarcopterygians (lungfishes and tetrapods) ...

John Long receives funding from The Australian Research Council for his research on early vertebrate evolution. A century-old mystery about how ancient freshwater fishes breathe has finally been put ...

Invertebrates are a wildly diverse lot — far more diverse than the relatively small group known as vertebrates. Accordingly, the inverts have a huge diversity of life styles and body plans. Consider ...

The 100-year-old mystery surrounding how four-legged animals developed the ability to breathe air has finally been solved. Scientists claim the ability was passed down by ancient Gogonasus - a group ...

What might be mistaken for a waterslide in this image is actually the breathing tube, or trachea, of a dragonfly. This tube connects to openings in the insect's exoskeleton (outer “shell”) called ...

Honestly, I’m not sure what to say except that YouTuber Precarious333’s video of a Giant Texas Katydid (Neobarrettia spinosa) chirping, breathing, and grooming is way more captivating than I expected ...