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单词 anaspid
释义
anaspid
(extremely rare)
n

WORD FAMILY
anaspid
n extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian
Hyper
agnathan, jawless fish, jawless vertebrate
eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms
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更新时间:2025/1/24 13:12:31