Body sizes for fossil taxa were estimated using regressions of body weight based on the area of the first lower molar for most species and on other teeth or limb bones for a few species.

大多数化石种类的体重通过下第一臼齿面积与体重的回归公式来估计，少数种类用其他牙齿或肢骨来估计。

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As a consequence, we have an emerging fossil record of flowering plants that includes many extinct taxa and would have delighted Darwin.

因此，我们有一个正在形成的有花植物的化石记录，包括许多灭绝类群，达尔文会感到高兴的。

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