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3D mouth of an ancient jawless fish suggests they were filter-feeders, not scavengers or hunters

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Early jawless fish were likely to have used bony projections surrounding their mouths to modify the mouth's shape while they collected food. Experts have used CT scanning techniques to build up the first 3D pictures of these creatures, which are some of the earliest vertebrates (animals with backbones) in which the mouth is fossilized.

3D mouth of an ancient jawless fish suggests they were filter-feeders, not scavengers or hunters." ScienceDaily. ScienceDaily, 10 April 2024. <www.sciencedaily.comUniversity of Birmingham. . 3D mouth of an ancient jawless fish suggests they were filter-feeders, not scavengers or hunters.

A study of fossilized lampreys dating from more than 300 million years ago is challenging a long-held theory about the evolutionary origin of vertebrates. These ancient, jawless, eel-like fishes ... Some, if not all, early sharks that lived 300 to 400 million years ago not only dropped their lower jaws downward but rotated them outwards when opening their mouths. This enabled them to make the ...

Big tidal ranges some 400 million years ago may have initiated the evolution of bony fish and land vertebrates. This theory is now supported by researchers who, for the first time, have used ... By looking at the DNA of living animals, researchers have revealed early events in vertebrate evolution, including how jawed vertebrates arose from the mating of two different species of primitive ...

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