A scotoma is a strange name for a common problem. A scotoma, pleural is scotomata, is an area of diminished or absent vision that is surrounded by an area of normal or near normal vision.It comes from the Greek work for darkness. scotoma is a strange name for a common problem. A scotoma, pleural is scotomata, is an area of diminished or absent vision that is surrounded by an area of normal or near normal vision. It comes from the Greek work for darkness.
Spinosaurus (meaning spine lizard) is a genus of theropod dinosaur that lived in what now is North Africa, during the lower Albian to lower Cenomanian stages of the Cretaceous period, about 112 to 97 million years ago.
The largest predatory dinosaur ever found terrorised the water more than the land, according to remarkable fossils dug up in the Moroccan Sahara. The bones show that the meat-eating Spinosaurus spent most of its time in water, making it the first known dinosaur to have adopted a semi-aquatic lifestyle. It had small nostrils far back on its crocodile-like skull which allowed it to breathe when its head was partially submerged.