Which organs are found in an animal's abdominal cavity? A
Stomach and spleen
B
Brain and spine
C
Heart and Lungs
D
Lungs and Trachea

The abdominal cavity contains the greater part of the digestive tract, the liver and pancreas, the spleen, the kidneys, and the adrenal glands located above the kidneys

The abdomen contains many vital organs: the stomach, the small intestine (jejunum and ileum), the large intestine (colon), the liver, the spleen, the gallbladder, the pancreas, the uterus, the fallopian tubes, the ovaries, the kidneys, the ureters, the bladder, and many blood vessels (arteries and veins)

Answer A will be the correct choice.

i think the miocene epoch spans the time from 23 million to 12 million years ago.