Nervous systems coordinate effectors across the body during movements. We know little about the cellular-level structure of synaptic circuits for such body-wide control. Here, we describe the ...

State Key Laboratory of Flexible Electronics (LoFE) & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications (NUPT), 9 Wenyuan Road, Nanjing 210023, P.R. China State ...

This film discusses the evolutionary significance of segmented worms, particularly earthworms, within the phylum Annelida. It explains the structure and function of their segmented bodies, including ...

Researchers have made the surprising discovery that one species of comb jelly (Mnemiopsis leidyi) can fuse, such that two individuals readily turn into one following an injury. Afterwards, they ...

When a nematode wriggles around a petri dish, what’s going on inside a tiny roundworm’s even tinier brain? Neuroscientists now have a more detailed answer to that question than ever before. As with ...

Shaihuludia shurikeni inhabited the Cambrian seas approximately 507 million years ago. The ancient creature was a type of annelid, a diverse group of segmented worms found in terrestrial, freshwater ...

A new species of ancient sea worm with an impressively elaborate set of star-shaped chaetae has been discovered after its puzzling fossilized form was found to be animal not mineral. And just as ...

A newfound, 500-million-year-old fossilized sea worm has been unearthed in northern Utah. This ancient worm would have glided through the ocean during the Cambrian period (541 million to 485.4 million ...

The principal animal lineages diverged in the Cambrian period, but most diversity at lower taxonomic ranks arose more gradually over the subsequent 500 million years. Annelid worms, or segmented worms ...

The fossilised remains dated from the early Cambrian period 515 million years ago and included evidence of the worms’ guts and kidneys. The fossils revealed the creatures had an unexpectedly complex ...