4 min read When the Devonian period dawned ... The cartilaginous fish, so-called because cartilage formed their skeletons, later gave rise to sharks and rays. They had small, rough scales, fixed ...

This diverse group of fish, coupled with that of marine invertebrates, cohabited in a Devonian warm sea coral reef around 380 million years ago. Our study reveals that coelacanths evolved rapidly ...

We have arrived in the Devonian period, some 420 to 360 million years ago ... The research findings thus provide additional evidence of the evolutionary link between the ray fins of bony fish and the ...