These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish to the formidable, pointed teeth of sharks. But fish evolved from toothless ...
Add Yahoo as a preferred source to see more of our stories on Google. Fossils of the ancient armored fish Romundina gagnieri reveal that early vertebrates had teeth growing on dental plates rather ...
Add Yahoo as a preferred source to see more of our stories on Google. drawing of green, scaly fish against blue background© Apokryltaros/CC-BY-SA The post A 400-Million-Year-Old Fish Smile Is Changing ...
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