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发表于 2025-3-23 10:40:38 | 显示全部楼层
https://doi.org/10.1007/978-3-031-14560-5 and some isolated islands, and occupy a great range of habitats. Yet the frog (or toad) is one of the most easily recognisable of all vertebrates. They are all quite obviously of rather similar shape and size, whether they are terrestrial or aquatic, burrowing or arboreal, even though they number s
发表于 2025-3-23 14:29:20 | 显示全部楼层
发表于 2025-3-23 21:42:49 | 显示全部楼层
Carl Walker,Serdar M. Değirmencioğluo legs with hands and feet each with five digits. The legs are four movable props with the centre of gravity of the body between them, hence the name tetrapod. This is not the only method of achieving locomotion on land as the legless lizards and snakes show, but it is highly effective and has also been used extensively by the arthropods.
发表于 2025-3-24 00:10:32 | 显示全部楼层
Health care and social securityoidea also contains three families, the Ranidae which is again world-wide, the Rhacophoridae in Asia, Africa and Madagascar and the Sooglossidae found only in the Seychelles. The Microhyloidea has a single family, the Microhylidae, which is essentially pantropical.
发表于 2025-3-24 05:02:54 | 显示全部楼层
The Tetrapods,o legs with hands and feet each with five digits. The legs are four movable props with the centre of gravity of the body between them, hence the name tetrapod. This is not the only method of achieving locomotion on land as the legless lizards and snakes show, but it is highly effective and has also been used extensively by the arthropods.
发表于 2025-3-24 07:11:18 | 显示全部楼层
发表于 2025-3-24 11:36:04 | 显示全部楼层
https://doi.org/10.1007/978-3-031-14560-5exceptions, involve physiology, behaviour and particularly methods of reproduction rather than external features. The Anura appear to have evolved a body form and size suited for survival in almost any terrestrial environment where some fresh water is available for part of the year.
发表于 2025-3-24 18:07:11 | 显示全部楼层
Frogs and Toads,exceptions, involve physiology, behaviour and particularly methods of reproduction rather than external features. The Anura appear to have evolved a body form and size suited for survival in almost any terrestrial environment where some fresh water is available for part of the year.
发表于 2025-3-24 22:33:27 | 显示全部楼层
发表于 2025-3-25 02:38:19 | 显示全部楼层
https://doi.org/10.1007/978-3-658-16604-5 rings and no legs or tail. Because of their habits they are seldom seen, but are possibly not uncommon locally. There are 150 species in 20 genera, widespread in the appropriate habitats in the tropics and no doubt more will be discovered.
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