Although the front dorsal vertebrae showed deep pleurocoels in their centra, these openings became much shallower towards the rear of the trunk
नदीवर, तलावांच्या काठांवर शेकाटे दिसायला लागले, की पक्ष्यांचं स्थलांथर सुरु झाल्याची चाहूल लागते.