But he said, "Any social function that it has would be a derived feature, and not a more primitive underlying feature of the behavior".
And in any case, why would you want to spend money to find out something that is not likely to help cure a disease?" Rebecca E. Fisher, an assistant professor of anatomy at the University of Arizona College of Medicine, said that although the appendix was "likely to be a derived feature, selected for a purpose, the enigma is that we didn't know what that purpose might be".
"It's a real, unique, derived feature found only in modern humans," says Lieberman.
The video-level control input is often an average input exposure value or some other derived feature of interest, as described in Section 3. We briefly address the above control mechanisms and then present specific control algorithms for each of them.
They also share the presence of furrows on the lingual side of the teeth only, but whether this is a derived feature is uncertain.
The feet of Vulcanodon were semiplantigrade as in later sauropods (where both the digits and part of the metatarsals contact the ground ), a derived feature not found in more basal sauropods like Isanosaurus.
Anteriorly it contacts the dentary, a derived feature also seen in Protoceratops, Bagaceratops, and ceratopsids [2].
This is a derived feature found only in Crocodylus [23], [49].
The prearticular of Zhuchengceratops contacts the dentary, a derived feature also seen in Protoceratops, Bagaceratops, and ceratopsids [2].
It now seems apparent that the premolar paracone of lagomorphs is a derived feature relative to their ancestors, the mimotonids.
Interestingly, the derived feature is present in Copepterxy hexeris (Figure 9D; [5]: Figure 10C), but it is not clear whether it is present in Phocavis ([60]: Figure 2F).
