Abstract Gonorynchiformes are a small, but morphologically diverse group of teleost fishes with an extensive fossil record. Most extant gonorynchiforms are efficient filter feeders, bearing long gill rakers and other morphological specializations, such as microbranchiospines and an epibranchial organ. The analyses of the gill arch of the Brazilian gonorynchiform fishes Dastilbe crandalli and Tharrias araripis from the Aptian of the Araripe Basin, Northeast Brazil, demonstrate significant morphological variation suggestive of distinct feeding habitats as well as ontogenetic dietary shifts in these closely related gonorynchiforms.

中文翻译：

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来自阿拉里佩盆地（巴西）的 Aptian chanid 鱼（Gonorynchiformes）的鳃骨架：自产学和古生态学意义

摘要 Gonorynchiformes 是一种小型但形态多样的硬骨鱼类，具有广泛的化石记录。大多数现存的淋球菌是有效的滤食性动物，带有长鳃耙和其他形态特征，如微鳃棘和上鳃器官。对来自巴西东北部阿拉里佩盆地阿普蒂安的巴西淋病鱼类 Dastilbe crandalli 和 Tharrias araripis 的鳃弓的分析表明，显着的形态变异表明这些密切相关的淋球菌具有不同的摄食栖息地以及个体发生的饮食变化。