"Nostrils of Raia lemprieri, with nasal flaps reverted." — Encyclopedia Britannica, 1893

Raia Lemprieri

"Nostrils of Raia lemprieri, with nasal flaps reverted." — Encyclopedia Britannica, 1893

"Larger aspect of head of Raia lemprieri." — Encyclopedia Britannica, 1893

Raia Lemprieri

"Larger aspect of head of Raia lemprieri." — Encyclopedia Britannica, 1893

"Dermal spines of a male Thornback, Raia clavata." — Encyclopedia Britannica, 1893

Spines

"Dermal spines of a male Thornback, Raia clavata." — Encyclopedia Britannica, 1893