premaxillary การใช้

• There are four premaxillary and about twenty-three maxillary teeth.
• Of the conical premaxillary teeth, the first is the largest.
• There are 78 premaxillary teeth, 10 maxillary and 13 dentary teeth.
• This species exhibits sexual dimorphism in the shape of the premaxillary teeth.
• The oldest confirmed tyrannosaurid premaxillary tooth was recovered from the Jobu Formation.
• He observed that these dinosaurs were distinguished by their unserrated premaxillary teeth.
• However, subsequently discovered specimens have been reported to preserve small premaxillary teeth.
• Only in adult individuals has the front of the premaxillary contact been fused.
• The premaxillary teeth lack denticles; those on the maxillary teeth are small.
• The premaxillary teeth are long and spoon-shaped.
• Its tooth-bearing premaxillary and maxillary bones are fused as in all Dipnoi.
• The premaxillary teeth were somewhat longer and recurved.
• The premaxillary teeth are pointed and lack denticles.
• Four premaxillary and seven maxillary teeth are preserved.
• The snout is short and bears large premaxillary and maxillary teeth in the upper jaw.
• The presence of premaxillary teeth is a plesiomorphic character because it is inherited from earlier Ornithischia.
• The front of the mouth curves up due to the premaxillary bone of the upper jaw.
• Uniquely, the premaxillary bone contacts the jugal ( cheek ) bone on the outside of the skull.
• There is also a small notch on the premaxilla that separates the premaxillary teeth from the maxillary teeth.
• Benson " et al . " ( 2013 ) also noted that it lacks anisodont premaxillary dentition.