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Upper row, left side: the "static" image: The static image practically only shows the bones, since frogs have very low soft tissue contrast. Lower row, left side: the "kinetic image, with a red-green coloured look-up-table applied: the movement of the heart, the heart valves, the aorta, and the alveoli of the lung can be seen.
Triprion spinosus, also known as the spiny-headed tree frog, spiny-headed treefrog, spinyhead treefrog, coronated treefrog, and crowned hyla, is a species of frog in the family Hylidae. [4]
Males have a pair of vocal sacs on the throat. A ridge connects the nostrils and upper eyelids and continues to the groin, separating the back from the flanks. The hind feet are webbed. The colour is variable, being reported as green, brown or mixed, sometimes with darker spots. Some frogs have a yellowish or greenish line along the spine.
Image credits: girlfr0g They have adapted to surviving in extreme weather conditions. Like all amphibians, frogs are cold-blooded, meaning their body temperatures change with the temperature of ...
The skin on the dorsum and venter is smooth, and a prominent dorsolateral dermal fold extends from the orbit to the groin. The fingers and toes are long with slender tips and lack webbing. Breeding males have greatly swollen forelimbs and one large, pointed, black spine on the inner surface of the thumb and two black spines on each side of the ...
Pickerel frogs have varied habitats, the northern populations prefer to live near cold, clear water. They prefer rocky ravines, bogs and meadow streams, but can be found around lakes and rivers that are heavily wooded. In a study on amphibians in Canada, pickerel frogs were negatively associated with young forest stands. [6]
Images Couch's spadefoot toad Scaphiopus couchii: Couch's spadefoot toads are found in the southwestern regions of the United States and some regions of Mexico. They stay buried in the soil for 8–10 months a year and eat enough in one meal to last them a whole year. Couch's spadefoot toads' tadpoles transform into frogs in 7–8 days [17]
Paleontologists have discovered a previously unknown ancient species: Kermitops — an amphibian that predates the dinosaurs and reveals the complexity of frog evolution. Researchers found a tiny ...