Abstract In a recent paper, the contention that spinosaurine theropods were semi-aquatic was supported by Arden et al., (2019) and they provided a hypothetical sequence of acquisition of traits that had evolved in line with this lifestyle. However, we find that the presented traits were either loosely defined and/or are clearly distinct from those traits seen in extant animals with adaptations to life in water. Some spinosaurs may have spent extensive time in water, but the data to support this is currently insufficient and other hypotheses for their behaviour also fit the available data.

中文翻译：

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点评：食肉恐龙（兽脚亚目：棘龙科）头骨的水生适应与棘龙类水生习性的演变。93：275-284。

摘要 在最近的一篇论文中，Arden 等人 (2019) 支持棘龙兽脚亚目是半水生动物的论点，并且他们提供了一个假设的获得与这种生活方式相一致的特征的序列。然而，我们发现所呈现的特征定义不明确和/或与适应水中生活的现存动物中观察到的特征明显不同。一些棘龙可能已经在水中度过了很长时间，但目前支持这一点的数据还不够，其他关于它们行为的假设也符合现有数据。