premaxillary

Some kind of premaxillary crest was present, but the skull is not well preserved enough to determine its original shape.

Archive 2006-02-01 Darren Naish 2006

It seems that these birds lost the teeth from the back of the jaws first, and kept their premaxillary and dentary-tip teeth the longest.

Archive 2006-07-01 Darren Naish 2006

Could those little premaxillary teeth have been specialized for ectoparasite control?

Archive 2006-07-01 Darren Naish 2006

More derived oviraptorosaurs were toothless, but the bony premaxillary margins of their upper jaw were serrated, raising the possibility that the tomium was serrated too.

Archive 2006-07-01 Darren Naish 2006

Pressure-sensitive organs termed Herbst corpuscles, embedded within pits on the premaxillary and dentary tips, are closely packed and particularly numerous in birds that probe sediments.

Archive 2006-04-01 Darren Naish 2006

The score mark matches precisely the dimensions of a tyrannosaurid premaxillary tooth tip, as Luis is demonstrating with the help of a handy set of tyrannosaurid premaxillae he just happens to own.

Archive 2006-02-01 Darren Naish 2006

Basal tyrannosauroids and other basal coelurosaurs that possess specialised premaxillary teeth that might have been used in preening/grooming of quill-like integumentary structures.

Archive 2006-07-01 Darren Naish 2006

In Protarchaeopteryx, teeth are restricted to the premaxillae and anterior parts of the maxillae and dentaries, with the premaxillary teeth being a few times taller than the others (Ji et al. 1998).

Archive 2006-07-01 Darren Naish 2006

Those short premaxillary teeth present in tyrannosauroids have conventionally been regarded as having a primary role in feeding, and it might be easy to confirm this by looking for micro - or macrowear.

Archive 2006-07-01 Darren Naish 2006

In archaeopterygids for example, the premaxillary teeth are more peg-like and more procumbent than are the other teeth.

Archive 2006-07-01 Darren Naish 2006