Earthworm
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An earthworm is a soil-dwelling terrestrial invertebrate that belongs to the phylum Annelida. The term is the common name for the largest members of the class Oligochaeta. In classical systems, they w
A profile SEM image of Lumbricus terrestris setae, small bristle-like projections that facilitate movement by anchoring the earthworm in the soil.
Earthworm copulation
Earthworm cocoons from L. terrestris. Weigh approximately 28 mg each.
Annelid
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Annelids, also known as segmented worms, are animals that comprise the phylum Annelida. The phylum contains over 22,000 extant species, including ragworms, earthworms, and leeches. The species exist i
This sabellid tubeworm is budding
Burgessochaeta setigera
Phylogenetic tree of early lophophorates
Regenwurm 1