The Jurassic fossil Juracanthocephalus reveals a key evolutionary link between rotifers and parasitic acanthocephalans, resolving debates about their origins and anatomy. A research team from the Nanj ...

A body fossil of a thorny-headed worm (Acanthocephala) has been dated to the Jurassic period, about 165 million years ago. It has characteristics of both Acanthocephala and tiny animals called ...

A research team from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences has identified a fossil acanthocephalan ... or spiny-headed worms, are a group of ...

Perhaps the mysteries of the disappearing worm fossils and the missing food source were related. The researchers turned to the sponges they'd captured and analyzed the microbes that filled their ...