ostracoderm

Plural Form：ostracoderms

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n.	1. an extinct, jawless, mainly freshwater fish, dating from the Silurian and Devonian periods, that had a flat body encased in a layer of protective bony plates and scales

Definition:

AllAll,甲胄鱼甲胄鱼,海滩上捡到甲胄鱼海滩上捡到甲胄鱼

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1.	甲胄鱼精华区文章阅读 ... Ostracod 介形类 Ostracoderm 甲胄鱼 Outcrop 露头 ... www.newsmth.net\|Based on 5 pages
2.	海滩上捡到甲胄鱼登山者们会发现山坡上露出的恐龙骨骼，小学生们会在海滩上捡到甲胄鱼(ostracoderm)的骨骼。这类巧合确实经常发生。 www.ftchinese.com\|Based on 4 pages