and by Cambrian Age 3, ecosystems flourished with a marked increase in animal diversity. One pivotal group in this evolutionary narrative is the chaetognaths, or arrow worms, which are among the ...

This group includes nematodes (microscopic worms), arthropods (insects ... ecdysozoans were prevalent in the Cambrian fossil record and we can see evidence of all three subgroups right at the ...

Image of the Day: Cambrian Worm This fossilized lobopodian (Collinsium ciliosum) found in a Cambrian deposit in South China had many specialized appendages, including strong dorsal spines that may ...

Cambrian sediments found in Canada, Greenland, and China have yielded rarely fossilized soft-bodied creatures such as marine worms buried during undersea mud avalanches. Representing the oldest ...

Pioneering research reveals the origins of the ventral nerve cord in early molting animals. An international team of ...

A trilobite detects a lumpy worm burrow by sight and perhaps smell, then burrows down and grasps its prey with its many legs. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy ...

FROM 508 MILLION YEARS AGO TO TODAYPreserved in the Burgess Shale of British Columbia, the worm Canadia spinosa was part of an explosion in biodiversity during the Cambrian period that gave birth ...

The fossils found date back to a geological and evolutionary period known as the Ediacaran–Cambrian transition. This was when the Ediacaran Period, which spanned 94 million years from the end of the ...

“Predator-prey interactions are often touted as a major driver of the Cambrian explosion ... most likely a kind of soft-bodied mollusk or worm. The researchers analyzed these specimens in ...

and priapulid worms. Their findings provide valuable insights into the origins of these structures in the basal Cambrian period. An international team of scientists has uncovered a fascinating ...

They studied fossils representing ancestral Scalidophorans from the early Cambrian-age Kuanchuanpu Biota and Chengjiang Biota, as well as Ottoia prolifica (an ancient priapulid-like worm); the ...

"Predator-prey interactions are often touted as a major driver of the Cambrian explosion ... most likely a kind of soft-bodied mollusk or worm. The researchers analyzed these specimens in relation ...