WebFish and amphibians are distinct classes of animals, although both belong to the broader phylum Chordata. Moreover, amphibians descended from fish as scientists have determined that they slowly evolved during the Devonian Period. • Lungfish (Dipnoi): Six species have limb-like fins, and can breathe air. Some are obligate air breathers, meaning they will drown if not given access to breathe air. All but one species bury in the mud when the body of water they live in dries up, surviving up to two years until water returns. • Bichir (Polypteridae): These 12 species are the only ray-finned fish to retain lungs. They are facultative air breathers, requiring access to surface air to breathe in poorly oxygenated water.
Summary Book - Reptiles & Amphibians
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10 Steps of Animal Evolution, From Fish to Primates - ThoughtCo
WebApr 15, 2024 · Mid-Spring Wildlife Photowalk with Ned Levi. Wildlife Photowalks are designed to photograph all kinds of wildlife including birds, amphibians, reptiles, … WebApr 12, 2024 · In two or three days, the female lays her eggs; the male fertilizes them as she releases them into the water. The eggs are in a protective jellylike mass that contains up to 6,000 eggs. The mass is usually attached to vegetation just below the water's surface. Leopard frogs can be green or light brown. WebFish Largest group of vertebrates; have a streamlined shape, a muscular tail, and fins; breathe through gills; have a 2 chambered heart; reproduce sexually Fins Fanlike structures attached to the endoskeleton of fish that aid in steering, balancing, and movement Scales Hard, thin plates that cover the skin and protect the body Lateral line system dallas sharepoint abbott