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shelvy木蟲 (著名寫手)
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[求助]
pregnathostomal的中文意思
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| pregnathostomal的中文意思 |
金蟲 (正式寫手)
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此單詞可以從有頷下門(Gnathostomata)轉(zhuǎn)化而來 gnathostome-gnathostomal-pregnathostomal gnathostome: jawed vertebrate http://www.sciencedirect.com/sci ... /S0024408296900436: The stages in the evolution of gnathostomes, driven by selection for increasing activity, are modelled as: ancestral vertebrate (with unjointed branchial arches) to early pre-gnathostome (jointed internal arches and stronger ventilation) to late pre-gnathostome (with mouth-closing, ventilatory ‘jaws’) to early gnathostome (feeding jaws). pre-gnathostome到gnathostome的演化階段: Four basic stages in evolution of jaws from branchial arches a. Ancestral vertebrate: unjointed branchial arches b. Early pre-gnathostome: jointed internal arches support stronger ventilation muscles; gives stronger inspiration and expiration c. Late pre-gnathostome: mouth-closing, ‘ventilatory’ jaw permits more forceful expiration of water across gills d. Early gnathostome: feeding jaws 我認為pre-gnathostome可以理解為:有頷脊柱類演化過程中的的前期 具體分為前期和后期,主要特點是動物的呼吸功能增強 pregnathostomal則代表此時期的,有此時期特征的 |
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