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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.
Paedophryne amauensis, also known as the New Guinea Amau frog, is a species of microhylid frog endemic to eastern Papua New Guinea. [ 2 ] [ 4 ] At 7.7 mm (0.30 in) in snout-to-vent length , it was once considered the world's smallest known vertebrate .
The world's smallest known vertebrate, Paedophryne amauensis, sitting on a U.S. dime.The dime is 17.9 mm in diameter, for scale. The word amphibian is derived from the Ancient Greek term ἀμφίβιος (amphíbios), which means 'both kinds of life', ἀμφί meaning 'of both kinds' and βίος meaning 'life'.
Comparative anatomy is the study of similarities and differences in the anatomy of different species. It is closely related to evolutionary biology and phylogeny [ 1 ] (the evolution of species). The science began in the classical era , continuing in the early modern period with work by Pierre Belon who noted the similarities of the skeletons ...
English: Comparison of the size of a human (on the right) and two western gorillas (Gorilla gorilla) (left and middle). The human has an assumed height of 175 cm (5 ft 9 in), while the standing gorilla is 160 cm (5 ft 3 in). The gorilla on the left 120 cm (3 ft 11 in) is in a normal posture with knuckles on the ground.
The origins of the word frog are uncertain and debated. [11] The word is first attested in Old English as frogga, but the usual Old English word for the frog was frosc (with variants such as frox and forsc), and it is agreed that the word frog is somehow related to this.
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Breviceps adspersus, also known as common rain frog, bushveld rain frog, and many other vernacular names, is a species of frog in the family Brevicipitidae. [2] It is found in Southern Africa , in Angola , Democratic Republic of the Congo , Namibia , Botswana , Zambia , Zimbabwe , South Africa , Eswatini , and Mozambique .