Early tetrapod likely ate on shore
By Sid Perkins
From Ottawa, at a meeting of the Society of Vertebrate Paleontology
The skull structure of Acanthostega, a semiaquatic creature that lived about 365 million years ago, suggests that although the creature spent most of its time in the water, it fed on shore or in the shallows rather than in deep water.
Molly J. Markey, a paleontologist at Harvard University, examined the pattern of boundaries between skull bones in Acanthostega. The boundaries, called sutures, can have straight edges or jagged, interlocking edges.