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CONODONTES
Conodonts
Embora os conodontes sejam considerados elementos importantes para a determinação da idade de depósitos sedimentares, por décadas intrigaram os paleontólogos. Conhecidos por minúsculos restos fossilizados - vagamente semelhantes a dentes, e que raramente ultrapassam 5mm de comprimento - sua origem e as afinidades evolutivas permaneceram um mistérios até o início da década de 1980, quando cerca de 11 exemplares completos foram encontrados em boas condições de preservação em rochas sedimentares na Escócia: graças a eles sabemos hoje que os conodontes foram vertebrados primitivos, exclusivamente marinhos e que raramente ultrapassavam alguns centímetros de comprimento.
Although conodonts are considered important elements for sedimentary deposits dating, they have intrigued palaeontologists for decades. Known basically by tiny teeth-like fossilized remains - rarely exceeding 5mm in length - their origin and evolutionary affinities has remained a mystery until the early 1980s, when nearly 11 complete specimens were found in good preservation conditions in sedimentary rocks of Scotland: because of them we now know that conodonts were primitive vertebrates, exclusively marine and rarely exceeded a few centimeters long.
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