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English

It was suggested in 2003 that brachiopods had evolved from an ancestor similar to Halkieria, a slug-like Cambrian animal with "chain mail" on its back and a shell at the front and rear end; it was thought that the ancestral brachiopod converted its shells into a pair of valves by folding the rear part of its body under its front.

Indonesian

Disarankan pada tahun 2003 bahwa brakiopoda telah berevolusi dari nenek moyang mirip dengan Halkieria, hewan periode Kambrium seperti-siput dengan "zirah rantai" di punggungnya dan cangkang di depan dan bagian belakang; ia berpikir bahwa brakiopoda leluhur mengubah cangkangnya menjadi sepasang katup dengan melipat bagian belakang tubuhnya di bawah depannya.