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Fossils of Lystrosaurus, a dicynodont therapsid, are most common in parts of modern-day South America, South Africa, Madagascar, India, South Australia, and Antarctica. It apparently lived in arid regions, and was mostly herbivorous. It originated during the mid-Permian period, survived the Permian extinction, and dwindled by the late Triassic, though there is evidence of a relict population in Australia during the Cretaceous. The dicynodonts had two large tusks, extending down from their upper jaws; the tusks were not used for food gathering, and in some species were limited to males. Food was gathered using an otherwise toothless beak. Judging from the fossil record, these pig-sized organisms were the most common mammal-like reptiles of the Permian.
-Anatomically, what was True of Lystrosaurus?
Brain Operation
Surgical intervention aimed at treating brain-related conditions or injuries, often involving the removal or repair of brain tissue.
Billion
A number representing a thousand million (1,000,000,000) in the American and modern British numeric system.
Neurotransmitters
Chemicals in the brain that transmit signals from one neuron to another across synapses.
Neural Impulse
An electrical signal that travels along the axon of a neuron, transmitting information between the brain and the body.
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