秘方药
发表于 2025-3-23 13:30:39
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机警
发表于 2025-3-23 15:31:18
Amphibians,n land, most amphibians remain near ponds and streams; others remain wholly in water throughout life. In the majority of cases amphibians lay eggs in water, where they are fertilized, such eggs thenceforth developing into water-dwelling, gill-breathing larvae, essentially similar in form to their fi
Entropion
发表于 2025-3-23 19:28:34
Staging of Embryonic and Larval Amphibians,graphy, anatomy, and histology of the various organs and tissues are now available in the literature, most of them examined in lesser or greater detail to the level of electronmicroscopy. Analyses of ontogeny have also been made at the gross visual level, for a variety of reasons (.), and like a ser
hangdog
发表于 2025-3-24 00:02:03
Organic Origin, Development and Change in Anuran Larvae to the Completion of Metamorphosis,s that embraces elaborate morphological, biochemical, physiological, and behavioral changes. During premetamorphosis there is no real effective level of hormonal secretion in the circulation (Myauchi et al., 1977) and thyroid activity is minimal (Etkin and Gona, 1974). From the end of premetamorphos
PLIC
发表于 2025-3-24 04:29:11
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花争吵
发表于 2025-3-24 08:42:33
Narbenverengerungen des Kehlkopfshave no terrestrial existence at all stay in water permanently as pedogenic forms (.). The first amphibians, distinguishable from fishes by structural differences that enabled them to survive for periods of time out of water, are found as fossils in the Devonian period of the Paleozoic era, about 35
现任者
发表于 2025-3-24 13:35:25
https://doi.org/10.1007/978-3-642-94534-2ed such changes provide a working basis for more detailed research in this field. The following account, therefore, deals with the subject of staging in some detail, but of more importance, it brings up-to-date and lists the relevant publications in the field.
largesse
发表于 2025-3-24 16:50:17
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promote
发表于 2025-3-24 22:36:58
Book 1984al and pharyngeal skeleton and the nerves and musculature, in order to learn more about amphibian phylogeny, for during my pre-and early postgrad uate years G. R. Beer and D. M. S. Watson inspired an undying interest in and respect for vertebrate comparative anatomy. However, it now seems to be tha
讲个故事逗他
发表于 2025-3-25 03:03:52
the cranial and pharyngeal skeleton and the nerves and musculature, in order to learn more about amphibian phylogeny, for during my pre-and early postgrad uate years G. R. Beer and D. M. S. Watson inspired an undying interest in and respect for vertebrate comparative anatomy. However, it now seems to be tha978-1-4612-9777-2978-1-4612-5302-0