Biomateriais originais em fósseis de vertebrados são raros? Uma análise global da literatura científica
DOI:
https://doi.org/10.22456/1807-9806.154745Palavras-chave:
Paleontologia Molecular, biomateriais não mineralizados, biomoléculas fósseis, análise quantitativa descritiva, preservação excepcionalResumo
A preservação de biomateriais interpretados como originais em fósseis de vertebrados tem sido historicamente considerada rara na literatura científica, associada a condições tafonômicas excepcionais. Nas últimas décadas, contudo, numerosos estudos têm reportado, na literatura científica, biomoléculas, estruturas celulares e tecidos moles em diferentes contextos fósseis, embora esses dados permaneçam dispersos. A pesquisa consistiu em um estudo documental com análise quantitativa descritiva da literatura,
no qual registros documentais de biomateriais reportados em publicações ao longo de oito décadas (1954–2025) foram sistematizados em banco de dados para análise de padrões de distribuição. Foram identificados 198 trabalhos, totalizando 377 registros documentais, abrangendo múltiplos níveis de organização biológica e diferentes distribuições taxonômicas, geográficas, estratigráficas e metodológicas. Observou-se correspondência entre a frequência dos registros publicados e a diversidade de abordagens analíticas descritas, com recorrente aplicação de estratégias multimétodo. Em conjunto, os resultados indicam que a percepção de raridade decorre, em grande parte, da fragmentação histórica da literatura e da ausência de sínteses quantitativas integradas, mais do que da escassez de relatos documentados. O estudo apresenta uma síntese quantitativa da distribuição dos registros publicados e contribui para o entendimento de como a preservação de biomateriais tem sido documentada na literatura paleomolecular.
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