And just as impressive, the 500-million-year-old aquatic annelid has been honored with a name paying tribute to sci-fi author Frank Herbert’s iconic supersized sandworms, ...

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The new annelid phylogeny instead indicates independent loss of palpae in errantian and sedentarian groups, as was previously suggested 6,7 by two of the co-authors of the current paper 1.

Bullish (Video) Annelid Worm Segmentation: Evolutionary Body Plan & Nerve Cord. Posted: March 14, 2025 | Last updated: March 14, 2025. This film discusses the evolutionary significance of ...

This makes the worm a close relative of families of annelid sea worms such as Flabelligeridae and Acrocirridae. Dr Smith added: “These families are like the top rungs on an evolutionary ladder.

Dr. Atsuko Nishigaki and their research team from Toho University, discovered that the marine worm Marphysa sp. E, an annelid ...

Whatever it is, it's "definitely flamboyant," said Kristian Fauchald, curator of annelid worms at the US. National Museum of Natural History in Washington, D.C., who wasn't part of the study.

Annelid hard parts have excellent preservation potential, but despite this specimens are rarely collected. Annelid collections tend to lack diversity and are generally focussed on a single family, the ...

As planktonic organisms the larvae of the marine annelid Platynereis swim freely in the open water. They move by activity of their cilia, thousands of tiny hair-like structures forming a band ...

Previous studies based on annelid fossils from Greenland suggested these species had heads that were indistinguishable from their bodies. Those fossils, says Nanglu, were nowhere near as well ...