Fossilized last meal reflects spiral-shaped intestine

The fossilized food remains of the extinct predatory fish Saurichthys reflect its spiral-shaped intestine. The spiral valve in fossils from Southern Switzerland is similar to that of sharks and rays. Paleontologists have thus closed a gap in the knowledge concerning the evolution of the gastrointestinal tract in vertebrates. 
Paleontology News — ScienceDaily

This entry was posted in Paleontology and tagged , , , , , . Bookmark the permalink.

Leave a Reply