The fossils of Mosura fentoni -- a species of arthropod that lived in the Cambrian Period -- were discovered in Burgess Shale in the Canadian Rockies, a region known for its exceptional ...

What paleontologists learned from fossils of a 3-eyed predator that lived 500 million years ago The unique features of Mosura fentoni astounded paleontologists.

Additionally, several Mosura fossils show details of internal anatomy seen in later arthropods, including some elements of the nervous system, circulatory system, and digestive tract.

The researchers think these are evidence of digestive glands, especially after comparing them to digestive glands in the fossils of other arthropods from the same era.

A rare glimpse inside a 510-million-year-old digestive system suggests feeding was a complicated business for the first arthropods. Even this early in animal evolution, some animals had a variety ...

A fossil bed in the High Atlas Mountains of Morocco is allowing new insights into the anatomies of arthropods that lived a half-billion years ago.

Based on existing arthropods, the researchers conclude that this is almost certainly the remains of its digestive tract.

In summary, X-ray tomography combined with electron microscopy reveals unknown aspects of the biology of Mesozoic thylacocephalan arthropods such as their digestive system, their gut contents and ...

Preserved within the fossilized digestive system of Timorebestia was Isoxys, a swimming arthropod that had long, protective spines pointing forward and backward.

These arthropods’ unusual digestive system can act like a heart and gills LEGGY MULTITASKERS The skinny legs of sea spiders (one shown from Antarctica) hold guts that digest food and help pump ...