Genus: Xylaspis PERNEGRE, 2004
Etymology: Greek, xylos, "wood," referring to the Wood Bay Formation (Spitsbergen), type locality of the specime, and Greek, aspis, "shield"; Wood Bay Formation Shield.
= Spitsbergaspis PERNEGRE, 2003 non PRIBYL & VANEK, 1980
Etymology: In reference to Spitsberg, the Princile Arpeligo of Svalbard where the specimens were found, and Greek, aspis, "shield"

Species: prima (PERNEGRE, 2003) PERNEGRE, 2004
Etymology: Latin, primus, "primier."
= Spitsbergaspis prima PERNEGRE, 2003

Holotype: MNHN, SVD 970

Locality: Spitsberg, Svalbard, Norway.

Horizon: Woodbay Formation, Sigurdfjellet faunal division.

Biostratigraphy:

Age: Early Devonian.

Material : Fragmentary dorsal shield.

Referred material :

MNHN, SVD 717-719, 725-732, 740, 742, 749-754, 756, 759, 760, 762-764, 774, 775, 777, 778, 964-970, 976-978, 1504, 1506, 1517, 1520, 1521, 1526, 1531-1534, 1539, 1540, 1542, 1547-1549, 1552, 1553, 1556, 1558, 1559: Fragmentary specimens.


Locality: Numerotee A j1, Sjovernbutka, Spitsberg, Svalbard, Norway.

Horizon: Woodbay Formation, Sigurdfjellet faunal division.

Biostratiraphy:

Age: Early Devonian.

Material: