Visible crew/equipment: When Owen runs towards the raptor gate, a moving boom mic shadow is visible on the gate. (00:23:30)
Visible crew/equipment: When Masrani puts his sunglasses on you can make out a camera reflection in the glass. (00:15:10)
Visible crew/equipment: When Claire and the soldiers are running to shoot the birds, a camera shadow can be seen on her briefly. (01:22:00)
Visible crew/equipment: When Lowery says "that first park was legit" two light screens are reflected in his glasses. (00:11:30)
Answer: And what about just digging for bones for the Mosasaurus? I think this was said somewhere-although I can't remember where so apologies if I'm wrong-but I think Dr. Wu mentioned something about it, so I'm sure they could've gotten DNA WITHOUT getting the blood from a mosquito. It sounds possible in my opinion.