[1] Although subject to multiple revisions over time, cirratulids are among the few polychaete clades with a verified fossil record.

[4] A study by Guido et al. (2024)[5] reported cirratulid aggregates as the first known example in the animal kingdom of the so called double-phased biomineralization process.

When alive, the body, branchiae and tentacular filaments are often red, orange or yellow, though species of Dodecaceria are dark green or black.

[8] There's no known Paleocene record, but from the Eocene onwards, reports of cirratulid bioconstructions in South Africa and the Americas are relatively frequent.

The species D. mexicanus (Wilson, 1986) was reported in Oligocene to Miocene fossiliferous sites across multiple locations in the pacific coasts of the Americas, from Mexico[11] to Peru.