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 ...

On the sidewalks of Inverness, remnants of ancient fish from the Devonian period have been spotted by a keen eye. Their discovery casts new light on the geological history of this Scottish region.

They had internal cartilaginous skeletons like sharks and rays but with an armour-like ... the most abundant and diverse group of fish during the Devonian period, which was 419 to 359 million ...

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 ...