studying agnathans
研究甲胄鱼类
early agnathans
早期甲胄鱼类
agnathans evolved
甲胄鱼类进化
primitive agnathans
原始甲胄鱼类
finding agnathans
寻找甲胄鱼类
agnathan lineage
甲胄鱼类谱系
agnathans existed
甲胄鱼类存在
diverse agnathans
多样甲胄鱼类
agnathans' fossils
甲胄鱼类化石
ancient agnathans
古代甲胄鱼类
the agnathans, a primitive group of jawless fish, existed long before vertebrates with jaws.
无颌类动物，是一类原始的无颌下颌脊索动物，在有颌脊索动物出现很久之前就已经存在了。
fossil evidence suggests that agnathans were incredibly diverse in the paleozoic era.
化石证据表明，在古生代，无颌类动物种类繁多。
haikouichthys, a well-preserved agnathan fossil, provides insights into early chordate evolution.
海口鱼，一种保存完好的无颌类动物化石，为早期脊索动物的演化提供了见解。
many scientists believe that agnathans represent a crucial link in vertebrate evolutionary history.
许多科学家认为，无颌类动物代表着脊索动物演化历史中的关键环节。
the study of agnathans helps paleontologists understand the origins of vertebrate features.
研究无颌类动物有助于古生物学家了解脊索动物特征的起源。
agnathans typically possessed a notochord, a flexible rod providing structural support.
无颌类动物通常具有脊索，这是一种提供结构支撑的柔性杆。
the absence of jaws in agnathans led to a different feeding strategy compared to jawed vertebrates.
无颌类动物缺乏颌骨，导致其进食策略与有颌脊索动物不同。
researchers are analyzing agnathan genomes to uncover genetic clues about early vertebrate development.
研究人员正在分析无颌类动物的基因组，以揭示早期脊索动物发育的遗传线索。
the evolutionary success of agnathans highlights the adaptability of early chordates.
无颌类动物的演化成功凸显了早期脊索动物的适应性。
comparing agnathans with jawed vertebrates reveals significant anatomical differences.
将无颌类动物与有颌脊索动物进行比较，可以发现显著的解剖学差异。
the fossil record provides a glimpse into the world inhabited by ancient agnathans.
化石记录为我们提供了对古老无颌类动物世界的一瞥。
studying agnathans
研究甲胄鱼类
early agnathans
早期甲胄鱼类
agnathans evolved
甲胄鱼类进化
primitive agnathans
原始甲胄鱼类
finding agnathans
寻找甲胄鱼类
agnathan lineage
甲胄鱼类谱系
agnathans existed
甲胄鱼类存在
diverse agnathans
多样甲胄鱼类
agnathans' fossils
甲胄鱼类化石
ancient agnathans
古代甲胄鱼类
the agnathans, a primitive group of jawless fish, existed long before vertebrates with jaws.
无颌类动物，是一类原始的无颌下颌脊索动物，在有颌脊索动物出现很久之前就已经存在了。
fossil evidence suggests that agnathans were incredibly diverse in the paleozoic era.
化石证据表明，在古生代，无颌类动物种类繁多。
haikouichthys, a well-preserved agnathan fossil, provides insights into early chordate evolution.
海口鱼，一种保存完好的无颌类动物化石，为早期脊索动物的演化提供了见解。
many scientists believe that agnathans represent a crucial link in vertebrate evolutionary history.
许多科学家认为，无颌类动物代表着脊索动物演化历史中的关键环节。
the study of agnathans helps paleontologists understand the origins of vertebrate features.
研究无颌类动物有助于古生物学家了解脊索动物特征的起源。
agnathans typically possessed a notochord, a flexible rod providing structural support.
无颌类动物通常具有脊索，这是一种提供结构支撑的柔性杆。
the absence of jaws in agnathans led to a different feeding strategy compared to jawed vertebrates.
无颌类动物缺乏颌骨，导致其进食策略与有颌脊索动物不同。
researchers are analyzing agnathan genomes to uncover genetic clues about early vertebrate development.
研究人员正在分析无颌类动物的基因组，以揭示早期脊索动物发育的遗传线索。
the evolutionary success of agnathans highlights the adaptability of early chordates.
无颌类动物的演化成功凸显了早期脊索动物的适应性。
comparing agnathans with jawed vertebrates reveals significant anatomical differences.
将无颌类动物与有颌脊索动物进行比较，可以发现显著的解剖学差异。
the fossil record provides a glimpse into the world inhabited by ancient agnathans.
化石记录为我们提供了对古老无颌类动物世界的一瞥。
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