5. describe one shark from the cenozoic era. what does the shark look like?

include a pic

1. Largest and most powerful macro-predatory fish that ever lived. 
2. Super-predator with the capability to consume a broad spectrum of fauna.
3. Reaching lengths of up to 60 feet. 
4. Megalodon is an extinct species.

mucosa

Explanation:

The pharynx and esophagus possesss all of the basic histological layers of the gastrtointestinal tract (GI tract). The layers are:

mucosa - layer closer to lumen which cocnsists of epithelium, lamina propria and muscularis mucosaesubmucosa-layer of loose connective tissue with vesselsmuscularis propria-layer of inner circular and outer longitudinal muscular layersadventia - layer of  loose connective tissue