The genus Trigoides is known from fossils from the Chengjiang Lagerstätte.

[1] It is proposed to be a type of ctenophore.

[2][3] A phylogenetic study of Cambrian stem-group ctenophores recovered Trigoides in Scleroctenophora, along with Galeactena, Maotianoascus, Thaumactena, Batofasciculus and Gemmactena.

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