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Tyrannosaur tooth marks are the most commonly preserved feeding traces of carnivorous dinosaurs.
Various types of feeding traces were identified; punctures, gouges, striae, fragmentary teeth, and combinations of the above marks.
It has been argued that the shape of the feeding traces is incompatible with a radula, and that despite the molluscan body form, the lack of a radula places Kimberella well outside the molluscan crown group.
The marks are interpreted as feeding traces and these fossils therefore record instances of cannibalism.
However, because Gorgosaurus outnumbers Daspletosaurus by three-to-one in this environment [36], most of the bones and feeding traces probably represent Gorgosaurus and therefore it is probable that at least some of these traces represent cannibalism.
Similarly, calibrated with the younger of the two fossil feeding traces, the age of Chrysomelidae increased to 89.0 Mya (confidence interval 78.4 100.9), whereas the older traces pushed back their age to 111.3 Mya (97.9 126.1; Table 2).
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This combined swimming and feeding trace fossil provides the first known independent evidence of bottom-feeding behavior in Notogoneus osculus Cope (Teleostei: Gonorynchidae), a behavior that had been previously interpreted for this species [1], [5].
These gaps correspond with the medial feeding trace approaching the lateral plane of the opposing side, which would have been consistent with a slight yaw as the fish swam along the lake bottom.
A masterful blend of economic, social, and geographic history, Feeding Gotham traces how this highly fragmented geography of food access became a defining and enduring feature of the American city.
All cows were fed inorganic trace minerals for 4 mo before initiation of treatments.
I prepared the special formula, fed him, traced his tiny face with my fingers, inhaled his cotton-wool hair, kissed him between the eyes, and settled him to sleep.
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