Abstract An amber (UFRPE 5037), from the black shales of the Ipubi Formation, Araripe Basin (Brazil), has been analyzed to understand its organic geochemical characteristics and possible botanical source using gas chromatography–mass spectrometry (GC–MS). The analyses carried out detected monoterpenes, hydrocarbonic sesquiterpenes, and aliphatic diterpanes like abietanes and norabietanes, as well as aromatic diterpanes such as simonellite, norsimonellite, retene, hinokiol, ferruginol and dehydroabietic acid. Such a combination of components is mainly known to have originated from gymnosperms. The individual identification of diterpenoids allowed the suggestion of Cheirolepidiaceae or Podocarpaceae families as possible amber producers, pointing to a flora similar to the underlying Crato Formation. Therefore, UFRPE 5037 consists on the first amber record in the Ipubi Formation, allowing the acquisition of important information regarding the botanical sources associated to new Brazilian amber occurrence described here.

中文翻译：

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Ipubi 组（巴西阿拉里佩盆地）白垩纪冈瓦纳琥珀的生物标志物特征及其古植物学意义

摘要 使用气相色谱-质谱法 (GC-MS) 分析了来自阿拉里佩盆地（巴西）Ipubi 组黑色页岩的琥珀 (UFRPE 5037)，以了解其有机地球化学特征和可能的植物来源。进行的分析检测到了单萜、烃类倍半萜和脂肪族双萜，如松香烷和降松香烷，以及芳香族双萜，如紫草、降紫杉、视黄烯、扁柏醇、铁杉醇和脱氢松香酸。已知这种成分的组合主要起源于裸子植物。对二萜类化合物的单独鉴定使得人们将 Cheirolepidiaceae 或 Polocarpaceae 科作为可能的琥珀生产者提出建议，并指出与潜在的 Crato Formation 相似的植物群。所以，