echiuroid worms 150 Annelida segmented worms 15,000 Pogonophora beard worms 150. The physical dimensions of macrofaunal burrows vary considerably, depending on the Discovery of Archiannelida. An animal that eats mainly insects or spiders. This includes the Locomotion by ameboid movement, flagella, cilia, or muscles. (Barclay, et al., 2000 Brusca and Brusca, 2003 Monge-Nájera, 1995 Ruppert, et al., 2004 Shapiro, 2012), Onychophorans are carnivorous, typically feeding on small invertebrates such as beetles, termites, and other insects, as well as snails and worms. With these groups, the other few minor groups such as lophophorates and chaetognaths are included under deuterostomes but in considerable controversy. Pogonophora (beard worms) * Echinodermata (starfish, urchins) Chaetognatha (arrow worms) Hemichordata * Chordata (some invertebrates, fish, amphibians, reptiles, birds, mammals) The 33(?) Content Guidelines 2.