how is palaeobiology related to this?
They stated that troodontid anatomy was consistent with a carnivorous lifestyle, and pointed out that the structure of their serrations was not much different from those of other theropods.
Xixiasaurus
They stated that troodontid anatomy was consistent with a carnivorous lifestyle, and pointed out that the structure of their serrations was not much different from those of other theropods. 
what is  xixiasaurus? It is a genus of troodontid dinosaur that lived during the Late Cretaceous Period where was it found? Xixia County, Henan Province, in central China. which family of classification did he belong to? troodontid dinosaur when was it discovered? UNANSWERABLE which biological system is it related to? UNANSWERABLE
wiki:7260077
Xixiasaurus [SEP] Palaeobiology
In 2015, the palaeontologist Christophe Hendrickx and colleagues suggested that basal (or "primitive") troodontids with unserrated teeth were herbivorous, whereas more derived troodontids with serrated teeth were carnivorous or omnivorous.