Like other soft-bodied organisms, ctenophores (comb jellies) produce fossils only under exceptional taphonomic conditions. Here, we present the first record of a Late Devonian ctenophore from the Escuminac Formation from Miguasha in eastern Canada. Based on the 18-fold symmetry of this disc-shaped fossil, we assign it to the total-group Ctenophora. Our phylogenetic analyses suggest that the new taxon Daihuoides jakobvintheri gen. et sp. nov. falls near Cambrian stem ctenophores such as ‘dinomischids’ and 'scleroctenophorans'. Accordingly, Daihuoides is a Lazarus-taxon, which post-dates its older relatives by over 140 million years, and overlaps temporally with modern ctenophores, whose oldest representatives are known from the Early Devonian. Our analyses also indicate that the fossil record of ctenophores does not provide strong evidence for or against the phylogenomic hypothesis that ctenophores are sister to all other metazoans.

像其他软体生物一样，栉水母（栉水母）仅在特殊的埋藏条件下才会产生化石。在这里，我们展示了来自加拿大东部 Miguasha 的 Escuminac 组的晚泥盆世栉水母的第一个记录。根据这个圆盘状化石的 18 倍对称性，我们将其归入栉水母属。我们的系统发育分析表明新的分类群Daihuoides jakobvintheri gen。等 sp. 十一月 落在寒武纪干栉水母附近，如“dinomischids”和“scleroctenophorans”。据此，戴霍爱德是一个拉撒路分类单元，它比它的老亲戚晚了 1.4 亿年以上，并且在时间上与现代栉水母重叠，现代栉水母的最古老代表是早泥盆世。我们的分析还表明栉水母的化石记录并没有提供强有力的证据支持或反对栉水母是所有其他后生动物的姐妹的系统发育假说。