Final answer:
The cell type located at the basal lamina of the olfactory mucosa is olfactory cells.
Step-by-step explanation:
The cell type located at the basal lamina of the olfactory mucosa is olfactory cells. These cells contain small hair-like extensions that interact with odor molecules in the mucus, stimulating signals to be sent to the olfactory bulb and other regions of the brain. Basal cells, brush cells, and sustentacular cells are also present in the olfactory mucosa, but they are not located at the basal lamina.