Heterodontosaurus (meaning different toothed lizard) is a genus of small herbivorous dinosaur with prominent canine teeth which lived in the Early Jurassic of South Africa.nother feature is the specialization of teeth which gave rise to the animal's name. Most dinosaurs (and indeed most reptiles) have a single type of tooth in their jaws, while Heterodontosaurus had three. At the front of the jaw beside the beak were small teeth likely used for chopping off leaves and stems.
Hypothyroidism, or low thyroid and sometimes hypothyreosis, is a common disorder of the endocrine system in which the thyroid gland does not produce enough thyroid hormone. It can cause a number of symptoms, such as poor ability to tolerate cold, a feeling of tiredness, and weight gain.
Thyroid Disease. (Also Called 'Thyroid Disease-Care & Treatment'). The thyroid is a small gland, shaped like a butterfly, that rests in the middle of the lower neck. Its primary function is to control the body's metabolism (rate at which cells perform duties essential to living).he following conditions cause hypothyroidism: 1  Thyroiditis is an inflammation of the thyroid gland. 2  This can lower the amount of hormones produced. 3  Hashimoto's thyroiditis is a painless disease of the immune system that is hereditary. 4  Postpartum thyroiditis occurs in 5 percent to 9 percent of women after giving birth.