Instead, the combination of observed characteristics decisively support an affinity with the lophophorates, and in particular, the brachiopods. The simple arrangement of the tentacles in the ...

An ancient, armored worm may be the key to unraveling the evolutionary history of a diverse collection of marine invertebrates. Discovered in China, a roughly 520-million-year-old fossil of the newly ...

An international team of scientists, including from the Universities of Bristol and Oxford, and the Natural History Museum, have discovered that a well-preserved fossilised worm dating from ...

Hyoliths are extinct invertebrates with calcareous shells that were common constituents of Cambrian fauna and formed a minor component of benthic faunas throughout the Palaeozoic until their demise in ...

Hyoliths are extinct invertebrates with calcareous shells that were common constituents of the Cambrian fauna and formed a minor component of benthic faunas throughout the Palaeozoic until their ...