Paper 'Early post-metamorphic, Carboniferous blastoid reveals the evolution and development of the digestive system in echinoderms' by Imran A. Rahman, Johnny A. Waters, Colin D. Sumrall and ...

Of course, this is one of the great questions of life. Indeed, most starfishes have a complete digestive system with the anus being a small opening on the top. However, there is a large order of ...

Nature - A bold claim about the origins of the echinoderms is based on newly discovered fossils from China. ... and are openings that pierce the wall of the digestive system just behind the mouth.

It squirts its digestive system out of its anus in a tangled, ... Sea cucumbers may look like slugs, but they are actually echinoderms, related to starfish and sea urchins.

At left is a red cushion sea star. At right, a micro-CT scan of a sea star shows the digestive system (yellow), nervous system (blue), muscles (red) and water vascular system (purple).

The inner workings of a tiny fossil have been studied using X-ray microscopy, revealing evidence of the digestive system for the first time. Researchers from the University of Bristol, Appalachian ...

A mysterious, prehistoric marine creature has spilled its guts. For the first time, scientists have unearthed a fossilized trilobite whose final meals were preserved within its digestive system ...

How to cite this article: Gorzelak, P. et al. Microlens arrays in the complex visual system of Cretaceous echinoderms. Nat. Commun. 5:3576 doi: 10.1038/ncomms4576 (2014). References.