Chuvalchanglar (lotincha: Vermes) — umurtqasiz hayvonlarning yigʻma guruhi, ikki yonlama simmetriyali, gavdasi choʻziq hayvonlarni oʻz ichiga oladi. Ilgari chuvalchangga tip makrmi berib kelingan. Hozirgi chuvalchang mustaqil tiplar: yassi chuvalchanglar, nemertinalar, birlamchi tana boʻshliqlilar, tikanboshlilar, halqali chuvalchanglarga ajratiladi. Dastlabki tuban chuvalchang guruhi, yaʼni skoletsidlarga kiritiladi[1].
| Chuvalchanglar | ||
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| Biologik klassifikatsiya | ||
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Manbalar
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