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有鳞目(squamata)
这是现生爬行类中的常见者,如蜥蜴、蛇均属之。无次生腭,脊椎常为前凹型。蛇类失去四肢,脊椎骨和肋骨数目增加,使身体变长,方骨活动,使口张得很大。在有鳞目化石中,蜥蜴类比蛇类更为常见。我国的本类化石亦不少,如晚侏罗世的yabeinosaurus(矢部龙)等。 |
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- lat.: squamata
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animal | reptllia | Helodermatidae | goanna superfamily | Chordata | Agamidae | Lacertilia | Lacertidae | Wuwei species | Gualuoxishu | Biology | amniote | cockatrice | haishe | serpentes | basilisk | Gekkonidae | reptilia | viperidae | Snakes | Elapidae | haisheke | colubridae | Homalopsinae | More results... |
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Lacertilia | serpentes | Amphisbaenia | |
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