Tessaradoma boreale is widely cited from the Atlantic and Mediterranean Sea. Images of two syntypes (courtesy of B. Berning and the NHMUK).
Original description: Onchopora borealis Busk, 1860.
Locality: Shetland Islands.
Type Specimens: syntypes NHMUK 1899.7.1.2610, -2611, -2614, -2678.