According to a large dataset presented in this study, the body sizes of all nonplantigrades (including nonvolant dinosaurs, nonvolant terrestrial birds, extant mammals, and extinct Nearctic mammals) are above 500 g, except for macroscelid mammals (i.e., elephant shrew), a few alvarezsauroid dinosaurs, and nondinosaur ornithodirans (i.e., the immediate ancestors of dinosaurs).

He also resisted the vulgar racist stereotypes of the day and wrote about the slave trade with an antiracializing rhetoric.

an explosive accusation

This led to a great deal of straightening and culverting, which in turn led to a massive loss of biodiversity.