Latest Vertebrates Stories
A two-faced fish more than 400 million years old is likely the last common ancestor of all jawed vertebrates--including us--and provides additional evidence that sharks are not primitive creatures, as had long been assumed.
Researchers from the University of Valencia and the Natural History Museum of Berlin have studied the fossilized remains of scales and bones found in Teruel and the south of Zaragoza, ascertaining that they belong to a new fish species called Machaeracanthus goujeti that lived in that area of the peninsula during the Devonian period.
A Swedish scientist has reported the finding of a fossilized specimen that may provide new insight into how jawed vertebrates evolved.
- In medieval musical notation, a sign or neume denoting a shake or trill.